自动化制造系统毕业论文中英文资料外文翻译文献
自动化制造系统与PLC论文中英文资料外文翻译文献
中英文资料外文翻译文献外文原文Automating Manufacturing Systems with PLCs2.1 INTRODUCTIONControl engineering has evolved over time. In the past humans were the main method for controlling a system. More recently electricity has been used for control and early electrical control was based on relays. These relays allow power to be switched on and off without a mechanical switch. It is common to use relays to make simple logical control decisions. The development of low cost computer has brought the most recent revolution,the Programmable Logic Controller (PLC). The advent of the PLC began in the1970s, and has become the most common choice for manufacturing controls.PLCs have been gaining popularity on the factory floor and will probably remain predominant for some time to come. Most of this is because of the advantages they offer. • Cost effective for controlling complex systems.• Flexible and can be reapplied to control other systems quickly and easily.• Computational abilities allow more sophisticated control.• Tr ouble shooting aids make programming easier and reduce downtime.• Reliable components make these likely to operate for years before failure.2.1.1 Ladder logicLadder logic is the main programming method used for PLCs. As mentioned before, ladder logic has been developed to mimic relay logic. logic diagrams was a strategic one. By selecting ladder logic as the main programming method, the amount of retraining needed forengineers and trades people was greatly reduced.Modern control systems still include relays, but these are rarely used for logic. A relay is a simple device that uses a magnetic field to control a switch, as pictured in Figure 2.1. When a voltage is applied to the input coil, the resulting current creates a magnetic field. The magnetic field pulls a metal switch (or reed) towards it and the contacts touch, closing the switch. The contact that closes when the coil is energized is called normally open. The normally closed contacts touch when the input coil is not energized. Relays are normally drawn in schematic form using a circle to represent the input coil. The output contacts are shown with two parallel lines. Normally open contacts are shown as two lines, and will be open (non-conducting) when the input is not energized. Normally closed contacts are shown with two lines with a diagonal line through them. When the input coil is not energized the normally closed contacts will be closed (conducting).Figure 2.1 Simple Relay Layouts and SchematicsRelays are used to let one power source close a switch for another (often high current) power source, while keeping them isolated. An example of a relay in a simple control application is shown in Figure 2.2. In this system the first relay on the left is used as normally closed, and will allow current to flow until a voltage is applied to the input A. The second relay is normally open and will not allow current to flow until a voltage is applied to the input B. If current is flowing through the first two relays then current will flow through the coil in the third relay, and close the switch for output C. This circuit would normally be drawn in the ladder logic form. This can be read logically as C will be on if A is off and B is on.Figure 2.2 A Simple Relay ControllerThe example in Figure 2.2 does not show the entire control system, but only the logic. When we consider a PLC there are inputs, outputs, and the logic. Figure 2.3 shows a more complete representation of the PLC. Here there are two inputs from push buttons.We can imagine the inputs as activating 24V DC relay coils in the PLC. This in turn drives an output relay that switches 115V AC, that will turn on a light. Note, in actual PLCs inputs are never relays, but outputs are often relays. The ladder logic in the PLC is actually a computer program that the user can enter and change. Notice that both of the input push buttons are normally open, but the ladder logic inside the PLC has one normally open contact, and one normally closed contact. Do not think that the ladder logic in the PLC need so match the inputs or outputs. Many beginners will get caught trying to make the ladder logic match the input types.Figure 2.3 A PLC Illustrated With RelaysMany relays also have multiple outputs (throws) and this allows an output relay to also be an input simultaneously. The circuit shown in Figure 1.4 is an example of this, it is called a seal in circuit. In this circuit the current can flow through either branch of the circuit, through the contacts labelled A or B. The input B will only be on when the output B is on. If B is off, and A is energized, then B will turn on. If B turns on then the input B will turn on, and keep output B on even if input A goes off. After B is turned on the output B will not turn off.Figure 2.4 A Seal-in Circuit2.1.2 ProgrammingThe first PLCs were programmed with a technique that was based on relay logic wiring schematics. This eliminated the need to teach the electricians, technicians and engineers how to program a computer - but, this method has stuck and it is the most common technique for programming PLCs today. An example of ladder logic can be seen in Figure 2.5. To interpret this diagram imagine that the power is on the vertical line on the left hand side, we call this the hot rail. On the right hand side is the neutral rail. In the figure there are two rungs, and on each rung there are combinations of inputs (two vertical lines) and outputs (circles). If the inputs are opened or closed in the right combination the power can flow from the hot rail, through the inputs, to power the outputs, and finally to the neutral rail. An input can come from a sensor, switch, or any other type of sensor. An output will be some device outside the PLC that is switched on or off, such as lights or motors. In the top rung the contacts are normally open and normally closed. Which means if input A is on and input B is off, then power will flow through the output and activate it. Any other combination of input values will result in the output X being off.Figure 2.5 A Simple Ladder Logic DiagramThe second rung of Figure 2.5 is more complex, there are actually multiple combinations of inputs that will result in the output Y turning on. On the left most part of the rung, power could flow through the top if C is off and D is on. Power could also (and simultaneously) flow through the bottom if both E and F are true. This would get power half way across the rung, and then if G or H is true the power will be delivered to output Y. In later chapters we will examine how to interpret and construct these diagrams.There are other methods for programming PLCs. One of the earliest techniques involved mnemonic instructions. These instructions can be derived directly from the ladderlogic diagrams and entered into the PLC through a simple programming terminal. An example of mnemonics is shown in Figure 2.6. In this example the instructions are read one line at a time from top to bottom. The first line 00000 has the instruction LDN (input load and not) for input A. . This will examine the input to the PLC and if it is off it will remember a 1 (or true), if it is on it will remember a 0 (or false). The next line uses an LD (input load) statement to look at the input. If the input is off it remembers a 0, if the input is on it remembers a 1 (note: this is the reverse of the LD). The AND statement recalls the last two numbers remembered and if the are both true the result is a 1, otherwise the result is a 0. This result now replaces the two numbers that were recalled, and there is only one number remembered. The process is repeated for lines 00003 and 00004, but when these are done there are now three numbers remembered. The oldest number is from the AND, the newer numbers are from the two LD instructions. The AND in line 00005 combines the results from the last LD instructions and now there are two numbers remembered. The OR instruction takes the two numbers now remaining and if either one is a 1 the result is a 1, otherwise the result is a 0. This result replaces the two numbers, and there is now a single number there. The last instruction is the ST (store output) that will look at the last value stored and if it is 1, the output will be turned on, if it is 0 the output will be turned off.Figure 2.6 An Example of a Mnemonic Program and Equivalent Ladder LogicThe ladder logic program in Figure 2.6, is equivalent to the mnemonic program. Even ifyou have programmed a PLC with ladder logic, it will be converted to mnemonic form before being used by the PLC. In the past mnemonic programming was the most common, but now it is uncommon for users to even see mnemonic programs.Sequential Function Charts (SFCs) have been developed to accommodate the programming of more advanced systems. These are similar to flowcharts, but much more powerful. The example seen in Figure 2.7 is doing two different things. To read the chart, start at the top where is says start. Below this there is the double horizontal line that says follow both paths. As a result the PLC will start to follow the branch on the left and right hand sides separately and simultaneously. On the left there are two functions the first one is the power up function. This function will run until it decides it is done, and the power down function will come after. On the right hand side is the flash function, this will run until it is done. These functions look unexplained, but each function, such as power up will be a small ladder logic program. This method is much different from flowcharts because it does not have to follow a single path through the flowchart..Figure 2.7 An Example of a Sequential Function CharStructured Text programming has been developed as a more modern programming language. It is quite similar to languages such as BASIC. A simple example is shown in Figure 2.8. This example uses a PLC memory location i. This memory location is for an integer, as will be explained later in the book. The first line of the program sets the value to 0. The next line begins a loop, and will be where the loop returns to. The next line recalls thevalue in location i, adds 1 to it and returns it to the same location. The next line checks to see if the loop should quit. If i is greater than or equal to 10, then the loop will quit, otherwise the computer will go back up to the REPEAT statement continue from there. Each time the program goes through this loop i will increase by 1 until the value reaches 10.Figure 2.8 An Example of a Structured Text Program2.1.3 PLC ConnectionsWhen a process is controlled by a PLC it uses inputs from sensors to make decisions and update outputs to drive actuators, as shown in Figure 2.9. The process is a real process that will change over time. Actuators will drive the system to new states (or modes of operation). This means that the controller is limited by the sensors available, if an input is not available, the controller will have no way to detect a condition.Figure 2.9 The Separation of Controller and ProcessThe control loop is a continuous cycle of the PLC reading inputs, solving the ladder logic, and then changing the outputs. Like any computer this does not happen instantly. Figure 2.10 shows the basic operation cycle of a PLC. When power is turned on initially the PLC does a quick sanity check to ensure that the hardware is working properly.If there is a problem the PLC will halt and indicate there is an error. For example, if the PLC power is dropping andabout to go off this will result in one type of fault. If the PLC passes the sanity check it will then scan (read) all the inputs. After the inputs values are stored in memory the ladder logic will be scanned (solved) using the stored values not the current values. This is done to prevent logic problems when inputs change during the ladder logic scan. When the ladder logic scan is complete the outputs will be scanned (the output values will be changed). After this the system goes back to do a sanity check, and the loop continues indefinitely. Unlike normal computers, the entire program will be run every scan. Typical times for each of the stages is in the order of milliseconds.Figure 2.10 The Scan Cycle of a PLC2.1.4 Ladder Logic InputsPLC inputs are easily represented in ladder logic. In Figure 2.11 there are three types of inputs shown. The first two are normally open and normally closed inputs, discussed previously. The IIT (Immediate InpuT) function allows inputs to be read after the input scan, while the ladder logic is being scanned. This allows ladder logic to examine input values more often than once every cycle.Figure 2.11 Ladder Logic Inputs2.1.5 Ladder Logic OutputsIn ladder logic there are multiple types of outputs, but these are not consistently available on all PLCs. Some of the outputs will be externally connected to devices outside the PLC, but it is also possible to use internal memory locations in the PLC. Six types of outputs are shown in Figure 2.12. The first is a normal output, when energized the output will turn on, and energize an output. The circle with a diagonal line through is a normally on output. When energized the output will turn off. This type of output is not available on all PLC types. When initially energized the OSR (One Shot Relay) instruction will turn on for one scan, but then be off for all scans after, until it is turned off. The L (latch) and U (unlatch) instructions can be used to lock outputs on. When an L output is energized the output will turn on indefinitely, even when the output coil is deenergized. The output can only be turned off using a U output. The last instruction is the IOT (Immediate OutpuT) The last instruction is the IOT (Immediate OutpuT)that will allow outputs to be updated without having to wait for the ladder logic scan to be completed.3.1 INPUTS AND OUTPUTSInputs to, and outputs from, a PLC are necessary to monitor and control a process. Both inputs and outputs can be categorized into two basic types: logical or continuous. Considerthe example of a light bulb. If it can only be turned on or off, it is logical control. If the light can be dimmed to different levels, it is continuous. Continuous values seem more intuitive, but logical values are preferred because they allow more certainty, and simplify control. As a result most controls applications (and PLCs) use logical inputs and outputs for most applications. Hence, we will discuss logical I/O and leave continuous I/O for later.Outputs to actuators allow a PLC to cause something to happen in a process. A short list of popular actuators is given below in order of relative popularity.Solenoid Valves - logical outputs that can switch a hydraulic or pneumatic flow. Lights - logical outputs that can often be powered directly from PLC output boards.Motor Starters - motors often draw a large amount of current when started, so they require motor starters, which are basically large relays.Servo Motors - a continuous output from the PLC can command a variable speed or position.Outputs from PLCs are often relays, but they can also be solid state electronics such as transistors for DC outputs or Triacs for AC outputs. Continuous outputs require special output cards with digital to analog converters.Inputs come from sensors that translate physical phenomena into electrical signals. Typical examples of sensors are listed below in relative order of popularity.Proximity Switches - use inductance, capacitance or light to detect an object logically. Switches - mechanical mechanisms will open or close electrical contacts for a logical signal. Potentiometer - measures angular positions continuously, using resistance.LVDT (linear variable differential transformer) - measures linear displacement continuously using magnetic coupling.Inputs for a PLC come in a few basic varieties, the simplest are AC and DC inputs. Sourcing and sinking inputs are also popular. This output method dictates that a device does not supply any power. Instead, the device only switches current on or off, like a simple switch. Sinking - When active the output allows current to flow to a common ground. This is best selected when different voltages are supplied. Sourcing - When active, current flows from asupply, through the output device and to ground. This method is best used when all devices use a single supply voltage. This is also referred to as NPN (sinking) and PNP (sourcing). PNP is more popular. This will be covered in detail in the chapter on sensors.3.1.1 InputsIn smaller PLCs the inputs are normally built in and are specified when purchasing the PLC. For larger PLCs the inputs are purchased as modules, or cards, with 8 or 16 inputs of the same type on each card. For discussion purposes we will discuss all inputs as if they have been purchased as cards. The list below shows typical ranges for input voltages, and is roughly in order of popularity. PLC input cards rarely supply power, this means that an external power supply is needed to supply power for the inputs and sensors. The example in Figure 3.1 shows how to connect an AC input card.Figure 3.1 An AC Input Card and Ladder LogicIn the example there are two inputs, one is a normally open push button, and the second is a temperature switch, or thermal relay. (NOTE: These symbols are standard and will be discussed later in this chapter.) Both of the switches are powered by the positive/ hot output ofthe 24Vac power supply - this is like the positive terminal on a DC supply. Power is supplied to the left side of both of the switches. When the switches are open there is no voltage passed to the input card. If either of the switches are closed power will be supplied to the input card. In this case inputs 1 and 3 are used - notice that the inputs start at 0. The input card compares these voltages to the common. If the input voltage is within a given tolerance range the inputs will switch on. Ladder logic is shown in the figure for the inputs. Here it uses Allen Bradley notation for PLC-5 racks. At the top is the location of the input card I:013 which indicates that the card is an Input card in rack 01 in slot 3. The input number on the card is shown below the contact as 01 and 03.Many beginners become confused about where connections are needed in the circuit above. The key word to remember is circuit, which means that there is a full loop that the voltage must be able to follow. In Figure 3.1 we can start following the circuit (loop) at the power supply. The path goes through the switches, through the input card, and back to the power supply where it flows back through to the start. In a full PLC implementation there will be many circuits that must each be complete. A second important concept is the common. Here the neutral on the power supply is the common, or reference voltage. In effect we have chosen this to be our 0V reference, and all other voltages are measured relative to it. If we had a second power supply, we would also need to connect the neutral so that both neutrals would be connected to the same common. Often common and ground will be confused. The common is a reference, or datum voltage that is used for 0V, but the ground is used to prevent shocks and damage to equipment. The ground is connected under a building to a metal pipe or grid in the ground. This is connected to the electrical system of a building, to the power outlets, where the metal cases of electrical equipment are connected. When power flows through the ground it is bad. Unfortunately many engineers, and manufacturers mix up ground and common. It is very common to find a power supply with the ground and common mislabeled.One final concept that tends to trap beginners is that each input card is isolated. This means that if you have connected a common to only one card, then the other cards are not connected. When this happens the other cards will not work properly. You must connect acommon for each of the output cards.3.1.2.Output ModulesAs with input modules, output modules rarely supply any power, but instead act as switches. External power supplies are connected to the output card and the card will switch the power on or off for each output. Typical output voltages are listed below, and roughly ordered by popularity.120 Vac24 Vdc12-48 Vac12-48 Vdc5Vdc (TTL)230 VacThese cards typically have 8 to 16 outputs of the same type and can be purchased with different current ratings. A common choice when purchasing output cards is relays, transistors or triacs. Relays are the most flexible output devices. They are capable of switching both AC and DC outputs. But, they are slower (about 10ms switching is typical), they are bulkier, they cost more, and they will wear out after millions of cycles. Relay outputs are often called dry contacts. Transistors are limited to DC outputs, and Triacs are limited to AC outputs. Transistor and triac outputs are called switched outputs. Dry contacts - a separate relay is dedicated to each output.This allows mixed voltages (AC or DC and voltage levels up to the maximum), as well as isolated outputs to protect other outputs and the PLC. Response times are often greater than 10ms. This method is the least sensitive to voltage variations and spikes. Switched outputs - a voltage is supplied to the PLC card, and the card switches it to different outputs using solid state circuitry (transistors, triacs, etc.) Triacs are well suited to AC devices requiring less than 1A. Transistor outputs use NPN or PNP transistors up to 1A typically. Their response time is well under 1ms.中文翻译自动化制造系统与PLC2．1介绍控制工程随着时间的推移在不断发展。
生产自动化毕业论文中英文资料外文翻译文献
生产自动化毕业论文中英文资料外文翻译文献外文资料：Production AutomationCharles L. Philips, Royce D. Harbor. FeedbackControl Systems. Prentic Hall, Inc..2000Abstract:Automation is a widely used term in manufacturing. In this context, automation can be defined as a technology concerned with the application of mechanical, electronic, and computer-based systems to operate and control production. Examples of this techno logy include:• Automatic machine tools to process parts.• Automated transfer lines and similar sequential production systems.• Automatic assembly machines.• Industrial robots.• Automatic material handling and storagesystems.• Automated inspection systems for qualitycontrol.• Feedback control and computer process control.• Computer systems that automate procedures for planning, data collection, and decision making to support manufacturing activities.Keywords: Automation manufacturing mechanical computerAutomated production systems can be classified into two basic categories: fixed automation and programmable automation.Fixed AutomationFixed automation is what Harder was referring to when he coined the word automation. Fixed automation refers to production systems in which the sequence of processing or assembly operations is fixed by the equipment configuration and cannot be readily changed without altering the equipment. Although each operation in the sequence is usually simple, the integration and coordination of many simple operations into a single system makes fixed automation complex. Typical features of fixed automation include 1. high initial investment for custom-engineered equipment, 2. high production rates, 3. application to products in which high quantities are to be produced, and 4. relative inflexibility in accommodating product changes.Fixed automation is economically justifiable for products with high demand rates. The high initial investment in the equipment can be divided over a large number of units, perhaps millions, thus making the unit cost low compared with alternative methods of production. Examples of fixed automation include transfer lines for machining, dial indexing machines, and automated assembly machines. Much of the technology in fixed automation was developed in the automobile industry; the transfer line (dating to about (1920) is an example.Programmable AutomationFor programmable automation, the equipment is designed in such a way that the sequence of production operations is controlled by a program, i. e., a set of coded instructions that can be read and interpreted by the system. Thus the operation sequence can be readily changed to permit different product configurations to be produced on the same equipment. Some of the features that characterize programmable automation include 1. high investment in general-purpose programmable equipment, 2. lower production rates than fixed automation, 3. flexibility to deal with changes in product configuration, and 4. suited to low and / or medium production of similar products or parts (e. g. part families). Examples of programmable automation include numerically controlled machine tools, industrial robots, and programmable logic controllers.Programmable production systems are often used to produceparts or products in batches. They are especially appropriate when repeat orders for batches of the same product are expected. To produce each batch of a new product, the system must be programmed with the set of machine instructions that correspond to that product. The physical setup of the equipment must also be changed; special fixtures must be attached to the machine, and the appropriate tools must be loaded. This changeover procedure can be time-consuming. As a result, the usual production cycle for a given batch includes 1. a (3 period during which the setup and reprogramming is accomplished and 2. a period in which the batch is processed. The setup-reprogramming period constitutes nonproductive time of the automated system.The economics of programmable automation require that as the setup-reprogramming time increases, the production batch size must be made larger so as to spread the cost of lost production time over a larger number of units. Conversely, if setup and reprogramming time can be reduced to zero, the batch size can be reduced to one. This is the theoretical basis for flexible automation, an extension of programmable automation. A flexible automated system is one that is capable of producing a variety of products (or parts) with minimal lost time for changeovers from one product to the next. The time toreprogram the system and alter the physical setup is minimal and results in virtually no lost production time. Consequently, the system is capable of producing various combinations and schedules of products in a continuous flow, rather than batch production with interruptions between batches. The features of flexible automation are 1. high investment for a custom-engineered system, 2. continuous production of mixtures of products, 3. ability to change product mix to accommodate changes in demand rates for the different products made, 4. medium production rates, and 5- flexibility to deal with product design variations.Flexible automated production systems operate in practice by one or more of the following approaches: 1. using part family concepts, by which the parts made on the system are limited in variety; 2. reprogramming the system in advance and /or off-line, so that reprogramming does not interrupt production; 3. downloading existing programs to the system to produce previouslymade parts for which programs are already prepared;) 4. using quick-change fixtures so that physical setup time is minimized;5. using a family of fixtures that have been designed for a limited number of part styles; and6. equipping the system with a large number of quick-change tools that include the variety of processing operations needed to produce the part family. For these approaches to be successful, the variation in the part styles produced on a flexible automated production system is usually) more limited than a batch-type programmable automation system. Examples of flexible automation are the flexible manufacturing systems for performing machining operations that date back to the late 1960s.Automation StrategiesA number of fundamental strategies exist for improving productivity in manufacturing operations. These strategies often involve the use of automation technology and are, therefore, called automation strategies. Indicating the likely effects of each strategy on operating factors such as cycle time, nonproductive time, manufacturing lead time, and other production parameters.Numerical controlNumerical control (often abbreviated NC) can be defined as a form of programmable automation in which the process is controlled by numbers, letters, and symbols. In NC, the numbers form a program of instructions designed for a particular workpart or job. When the job changes, the program of instructions is changed. This capability to change the program for each new job is what gives NC its flexibility. It is much easier to write new programs than to make major changes in the production equipment.NC equipment is used in all areas of metal parts fabrication and comprises roughly 15% of the modern machine tools in industry today. Since numerically controlled machines are considerably more expensive than their conventional counterparts, the asset value of industrial NC machine tools is proportionally much larger than their numbers. Equipment utilizing numerical control has been designed to perform such diverse operations as drilling, milling, turning, grinding, sheet metal press working, spot welding, arcwelding, riveting, assembly, drafting, inspection, and parts handling. And this is by no means a complete list. Numerical control should be considered as a possible mode of controlling the operation for any production situation possessing the following characteristics:1. Similar workparts in terms of raw material (e. g., metal stock for machining).2. The workparts are produced in various sizes and geometries.3. The workparts are produced in batches of small to medium-sized quantities.4. A sequence of similar processing steps is required to complete the operation on each workpiece.Many machining jobs meet these conditions. The machined workparts are metal, they are specified in many different sizes and shapes, and most machined parts produced in industry today are made in small to medium-size lot sizes. To produce each part, a sequence of drilling operations may be required, or a series of turning or milling operations. The suitability of NC for these kinds of jobs is the reason for the tremendous growth of numerical control in the metalworking industry over the last 25 years.Basic Components of an NC SystemAn operational numerical control system consists of the following three basic components:1. Program of instructions.2. Controller unit, also called machine control unit (MCU).3. Machine tool or other controlled process.The general relationship among the three components is illustrated. The program of instructions serves as the input to the controller unit, which in turn commands) the machine tool or other process to be controlled.Program of instructionsThe program of instructions is the detailed step-by-step set of directions which tell the Wm machine tool what to do. It is coded in numerical or symbolic form on some type of input medium that can be interpreted by the controller unit. The most common input medium is i-inch-wide punched tape. Over the years, other forms of input media have (been used, including punched cards, magnetic tape, and even 35-mm motion picture film.There are two other methods of input to the NC system which should be mentioned. The first is by manual entry of instructional data to the controller unit. This is time-consuming and is rarely used except as an auxiliary means of control or when only one or a very limited number of parts are to be made. The second method of input is by means of a direct link with a computer. This is called direct numerical control, or DNC.The program of instructions is prepared by someone called a part programmer. The programmer's job is to provide a set of detailed instructions by which the sequence of processing steps is to be performed. For a machining operation, the processing steps 4 involve the relative movement of the machine tool table and the cutting tool.Controller unitThe second basic component of the NC system is the controller unit. This consists of the electronics and hardware that read and interpret the program of instructions and convert it into mechanical actions of the machine tool. The typical elements of the controller unit include the tape reader, a data buffer, signal output channels to the machine tool, feedback channels from the machine tool, and the sequence controls to coordinate the overall operation of the foregoing elements.The tape reader is an electrical-mechanical device for winding and reading the punched tape containing the program of instructions. The data contained on the tape are read into the data buffer. The purpose of this device is to store the input instructions in logical blocks of information. A block of information usually represents one complete step in the sequence of processing elements. For example, one block may be the data required to move the machine table to a certain position and drill a hole at that location.The signal output channels are connected to the servomotors and other controls in the machine tool. Through these channels, the instructions are sent to the machine tool from the controller unit. To make certain that the instructions have been properly executed by the machine, feedback data are sent back to the controller via the feedback channels. The most important function of this return loop is to assure that the table and workpart have$ been properly located with respect to the tool. Most NC machine tools in use today are provided with position feedback controls for this purpose and are referred to as closed-loop systems. However, in recent years there has been a growth in the use of open-loop systems, which do not make use of feedback signals to the controller unit. The advocates of the open-loop concept claim that the reliability of the system is great enough that feedback controls are not needed and are an unnecessary extra cost.Sequence controls coordinate the activities of the other elements of the controller unit. The tape reader is actuated to read data into the buffer from the tape, signals are sent to and from the machine tool, and so on. These types of operations must be synchronized and this is the function of the sequence controls.Another element of the NC system, which may be physically part of the controller unit or part of the machine tool, is the control panel. The control panel or control console contains the dials and switches by which the machine operator runs the NC system. It may also contain data displays to provide information to the operator. Although the NC system is an automatic system, the human operator is still needed to turn the machine on and off, to change tools (some NC systems have automatic tool changers), to load and unload the machine, and to perform various other duties. To be able to discharge these duties, the operator must be able to control the system, and this is done through the control panel.Machine toolThe third basic component of an NC system is the machine tool or other controlled process. It is the part of the NC system which performs useful work. In the most common example of an NC system, one designed to perform machining operations, the machine tool consists of the worktable and spindle as well as the motors and controls necessary to drive them. It also includes the cutting tools, work fixtures, and other auxiliary equipment needed in the machining operation.Transfer MachinesThe highest degree of automation obtainable with special-purpose, multifunction machines is achieved by using transfer machines. Transfer machines are essentially acombination of individual workstations arranged in the required sequence, connected by work transfer devices, and integrated with interlocked controls. Workpieces are automatically transferred between the stations, which are equipped with horizontal, vertical, or angular units to perform machining, gagging, workpiece repositioning, assembling, washing, or other operations. The two major classes of transfer machines are rotary and in-line types.An important advantage of transfer machines is that they permit the maximum number of operations to be performed simultaneously. There is relatively no limitation on (the number of workpiece surfaces or planes that can be machined, since devices can be interposed in transfer machines at practically any point for inverting, rotating, or orienting the workpiece, so as to complete the machining operations. Work repositioning also minimizes the need for angular machining heads and allows operations to be performed in optimum time. Complete processing from rough castings or forgings to finished parts is often possible.One or more finished parts are produced on a transfer machine with each index of the transfer system that moves the parts from station to station. Production efficiencies of such machines generally range from 50% for a machine producing a variety of different parts to 85% for a machine producing one part, in high production, depending upon the workpiece and how the machine is operated (materials handling method, maintenance procedures, etc.)All types of machining operations, such as drilling, tapping, reaming, boring, and milling, are economically combined on transfer machines. Lathe-type operations such as turning and facing are also being performed on in-line transfer machine, with the workpieces being rotated in selected machining stations. Turning operations are performed in lathe-type segments in which multiple tool holders are fed on slides mounted on tunnel-type bridge units. Workpieces are located on centers and rotated by chucks at each turning station. Turning stations with CNC are available for use on in-line transfer machines. The CNC units allow the machine cycles to be easily altered to accommodate changes in workpiece design and can also be used for automatic tooladjustments.Maximum production economy on transfer lines is often achieved by assembling parts to the workpieces during their movement through the machine. Such items as bushings, seals, Welch plugs, and heat tubes can be assembled and then machined or tested during the transfer machining sequence. Automatic nut torturing following the application of part subassemblies can also be carried out.Gundrilling or reaming on transfer machines is an ideal application provided that proper machining units are employed and good bushing practices are followed. Contour boring and turning of spherical seats and other surfaces can be done with tracer controlled single-point inserts, thus eliminating the need for costly special form tools. In-process gaging of reamed or bored holes and automatic tool setting are done on transfer machines to maintain close tolerances.Less conventional operations sometimes performed on transfer machines include grinding, induction heating of ring gears for shrink-fit pressing on flywheels, induction hardening of valve seats, deep rolling to apply compressive preloads, and burnishing.Transfer machines have long been used in the automotive industry for producing identical components at high production rates with a minimum of manual part handling. In addition to decreasing labor requirements, such machines ensure consistently uniform high-quality parts at lower cost. They are no longer confined just to rough machining and now often eliminate the need for subsequent operations such as grinding and honing.More recently, there has been an increasing demand for transfer machines to handle lower volumes of similar or even different parts in smaller sizes, with means for quick changeover between production runs. Built-in flexibility, the ability to rearrange and interchange machining units, and the provision of idle stations increases the cost of any transfer machine, but such features are economically feasible when product redesigns are common. Many such machines are now being used in no automotive applications for lower production requirements.Special features now available to reduce the time required for part changeover include I standardized dimensions, modularconstruction, interchangeable fixtures mounted on master pallets that remain on the machine, interchangeable fixture components, the ability to lock out certain stations for different parts by means of selector switches, and programmable controllers. Product design is also important and common transfer and clamping surfaces should be provided on different parts whenever possible.Programmable Logic ControllersA programmable logic controller (PLC) is a solid-state device used to control machine motion or process operation by means of a stored program. The PLC sends output control signals and receives input signals through input/output (I/O) devices. A PLC controls outputs in response to stimuli at the inputs according to the logic prescribed by the stored program. The inputs are made up of limit switches, pushbuttons, and thumbwheels switches, pulses, analog signals, ASCII serial data, and binary or BCD data from absolute position encoders. The outputs are voltage or current levels to drive end devices such as solenoids, motor starters, relays, lights, and so on. Other output devices include analog devices, digital BCD displays, ASCII compatible devices, servo variable-speed drives, and even computers.Programmable controllers were developed (circa in 1968) when General Motors Corp, and other automobile manufacturers were experimenting to see if there might be an alternative to scrapping all their hardwired control panels of machine tools and other production equipment during a model changeover. This annual tradition was necessary because rewiring of the panels was more expensive than buying new ones.The automotive companies approached a number of control equipment manufacturers and asked them to develop a control system that would have a longer productive life without major rewiring, but would still be understandable to and repairable by plant personnel. The new product was named a "programmable controller".The processor part of the PLC contains a central processing unit and memory. The central processing unit (CPU) is the "traffic director" of the processor, the memory stores information. Coming into the processor are the electrical signals from the input devices, as conditioned by the input module to voltage levelsacceptable to processor logic. The processor scans the state of I / O and updates outputs based on instructions stored in the memory of the PLC. For example, the processor may be programmed so that if an input connected to a limit switch is true (limit switch closed), then a corresponding output wired to an output module is to be energized. This output might be a solenoid, for example.The processor remembers this command through its memory and compares on each scan to see if that limit switch is, in fact, closed. If it is closed, the processor energizes the solenoid by turning on the output module.The output device, such as a solenoid or motor starter, is wired to an output module's terminal, and it receives its shift signal from the processor, in effect, the processor is performing a long and complicated series of logic decisions. The PLC performs such decisions sequentially and in accordance with the stored program. Similarly, analog I / O allows the processor to make decisions based on the magnitude of a signal, rather than just if it is on or off. For example, the processor may be programmed to increase or decrease the steam flow to a boiler (analog output) based on a comparison of the actual temperature in the boiler {analog input) to the desired temperature. This is often performed by utilizing the built-in PID (proportional, integral, derivative) capabilities of the processor.Because a PLC is "software based", its control logic functions can be changed by reprogramming its memory. Keyboard programming devices facilitate entry of the revised program, which can be designed to cause an existing machine or process to operate in a different sequence or to respond to different levels of, or combinations of stimuli. Hardware modifications are needed only if additional, changed, or relocated input / output devices are involved.中文翻译：生产自动化摘要：自动化是一个在制造业中广泛使用的术语。
机械设计制造及其自动化毕业设计外文翻译
机械设计制造及其自动化毕业设计外文翻译英文原文名Automatic production line PLC control of automatic feeding station中文译名基于PLC的自动化生产线自动上料站的控制中文译文：自动化生产线自动上料站的PLC控制自动生产线是由工件传送系统和控制系统，将一组自动机床和辅助设备按照工艺顺序联结起来，自动完成产品全部或部分制造过程的生产系统，简称自动线。
二十世纪20年代，随着汽车、滚动轴承、小电机和缝纫机和其他工业发展,机械制造业开始出现在自动生产线,第一个是组合机床自动线。
在20世纪20年代,第一次出现在汽车工业流水生产线和半自动生产线,然后发展成自动生产线。
第二次世界大战后,在机械制造工业发达国家,自动生产线的数量急剧增加。
采用自动生产线生产的产品应该足够大,产品设计和技术应该是先进的、稳定的和可靠的,基本上保持了很长一段时间维持不变。
自动线用于大,大规模生产可以提高劳动生产率,稳定和提高产品质量,改善劳动条件,降低生产区域,降低生产成本,缩短生产周期,保证生产平衡、显著的经济效益。
自动生产线的一个干预指定的程序或命令自动操作或控制的过程,我们的目标是稳定、准确、快速。
自动化技术广泛用于工业、农业、军事、科学研究、交通运输、商业、医疗、服务和家庭,等自动化生产线不仅可以使人们从繁重的体力劳动、部分脑力劳动以及恶劣、危险的工作环境,能扩大人的器官功能,极大地提高劳动生产率,提高人们认识世界的能力,可以改变世界。
下面我说下它的应用范围：机械制造业中有铸造、锻造、冲压、热处理、焊接、切削加工和机械装配等自动线，也有包括不同性质的工序，如毛坯制造、加工、装配、检验和包装等的综合自动线。
加工自动线发展最快,应用最广泛的机械制造。
主要包括:用于处理盒、外壳、各种各样的部件,如组合机床自动线;用于加工轴、盘部分,由通用、专业化、或自动机器自动专线;转子加工自动线;转子自动线加工过程简单、小零件等。
自动化专业毕业论文外文文献翻译
目录Part 1 PID type fuzzy controller and parameters adaptive method (1)Part 2 Application of self adaptation fuzzy-PID control for main steam temperature control system in power station 错误!未定义书签。
Part 3 Neuro-fuzzy generalized predictive control of boiler steam temperature ....................................................................... (8)Part 4 为Part3译文：锅炉蒸汽温度模糊神经网络的广义预测控制14Part 1 PID type fuzzy controller and Parametersadaptive methodWu zhi QIAO，Masaharu MizumotoAbstract: The authors of this paper try to analyze the dynamic behavior of the product—sum crisp type fuzzy controller, revealing that this type of fuzzy controller behaves approximately like a PD controller that may yield steady-state error for the control system。
By relating to the conventional PID control theory, we propose a new fuzzy controller structure，namely PID type fuzzy controller which retains the characteristics similar to the conventional PID controller. In order to improve further the performance of the fuzzy controller, we work out a method to tune the parameters of the PID type fuzzy controller on line, producing a parameter adaptive fuzzy controller. Simulation experiments are made to demonstrate the fine performance of these novel fuzzy controller structures。
(自动化专业)毕业论文文献翻译中英文对照
(自动化专业)毕业论文文献翻译中英文对照毕业设计外文资料翻译题目可编程控制器技术讨论与未来发展专业电气工程及其自动化PLC technique discussion and future developmentK. Begain, M. ErmelChair for Telecommunications, Dresden University of Technology,01062 Dresden, GermanyAbstract: Programmable Logic Controllers (PLC), a computing device invented by Richard E.Morley in 1968, have been widely used in industry including manufacturing systems, transportation systems, chemical process facilities, and many others. At that time, the PLC placed the hardwired logic with soft-wired logic or so-called relay ladder logic(RLL), a programming language visually resembling the hardwired logic, and reduced thereby the configuration time from 6 months down to 6 days [Moody and Morley,1999].Although PC based control has started to come into place, PLC based control will remain the technique to which the majority of industrial applications will adhere due to its higher performance, lower price, and superior reliability in harsh environments. Moreover, according to a study on the PLC market of Frost and Sullivan [1995], an increase of the annual sales volume to 15 million PLCs per year with the hardware value of more than 8 billion US dollars has been predicted, though the prices of computing hardware is steadily dropping. The inventor of the PLC, Richard E Morley, fairly considers the PLC market as a 5-billion industry at the present time.Key Words：PLC ，performance ，market1 IntroductionAlong with the development of the ages, the technique that is nowadays is also gradually perfect, the competition plays more more strong; the operation that list depends the artificial has already can't satisfied with the current manufacturing industry foreground, also can't guarantee the request of the higher quantity and high new the image of the technique business enterprise.The people see in produce practice, automate brought the tremendous convenience and the product quantities for people up of assurance, also eased the personnel's labor strength, reduce the establishment on the personnel. The target control of the hard realization in many complicated production lines, whole and excellent turn, the best decision etc., well-trained operation work, technical personnel or expert, governor but can judge and operate easily, can acquire the satisfied result. The research target of the artificial intelligence makes use of the calculator exactly to carry out, imitate these intelligences behavior, moderating the work through person's brain and calculators, with the mode that person's machine combine, for resolve the very complicated problem to look for the best pathWe come in sight of the control that links after the electric appliances in various situation, that is already the that time generation past, now of after use in the mold a perhaps simple equipments of grass-roots control that the electric appliances can do for the low level only;And the PLC emergence also became the epoch-making topic, adding the vivid software control through a very and stable hardware, making the automation head for the new high tide.2 PLC characteristics and containment2.1 The PLC biggest characteristicsThe PLC biggest characteristics lie in: The electrical engineering teacher already no longer electric hardware up too many calculationses of cost, as long as order the importation that the button switch or the importation of the sensors order to link the PLC up can solve problem, pass to output to order the conjunction contact machine or control the start equipments of the big power after the electric appliances, but the exportation equipments direct conjunction of the small power can.Figure 1. Open frame PLC2.2 PLC internal containmentPLC internal containment have CPU, and take to have an I/ O for expand of exterior to connect a people's address and saving machine three big pieces to constitute, CPU core is from an or many is tired to add the machine to constitute, mathematics that they have the logic operation ability, and can read the procedure save the contents of the machine to drive the homologous saving machine and I/ Os to connect after pass the calculation; The I/ O add inner part is tired the input and output system of the machine and exterior link, and deposit the related data into the procedure saving machine or data saving machine; The saving machine can deposit the data that the I/ O input in the saving machine, and in work adjusting to become tired to add the machine and I/ Os to connect, saving machine separately saving machine RAM of the procedure saving machine ROM and datas, the ROM can can do deposit of the data permanence in the saving machine, but RAM only for the CPU computes the temporary calculation usage of hour of buffer space.Figure 2. PLC input and output circuits2.3 PLC advantageThe PLC anti- interference is very and excellent, our root need not concern its service life and the work situation bad, these all problems have already no longer become the topic that we fail, but stay to our is a concern to come to internal resources of make use of the PLC to strengthen the control ability of the equipments for us, make our equipments more gentle.PLC language is not we imagine of edit collected materials the language or language of Cs to carry on weaving the distance, but the trapezoid diagram that the adoption is original after the electric appliances to control, make the electrical engineering teacher while weaving to write the procedure very easy comprehended the PLC language, and a lot of non- electricity professional also very quickly know and go deep into to the PLC.3 HMIIs PLC one of the advantage above and only, this is also one part that the people comprehend more and easily, in a lot of equipmentses, the people have already no longer hoped to see too many control buttons, they damage not only and easily and produce the artificial error easiest, small is not a main error perhaps you can still accept; But lead even is a fatal error greatly is what we can't is tolerant of. New technique always for bringing more safe and convenient operation for us, make we a lot of problems for face on sweep but light, do you understand the HMI? Says the HMI here you basically not clear what it is, also have no interest understanding, change one inside text explains it into the touch to hold or man-machine interface you knew, it combines with the PLC to our larger space.HMI the control not only only is reduced the control press button, increase the vivid of the control, more main of it is can sequence of, and at can the change data input to output the feedback with data, control in the temperature curve of imitate but also can keep the manifestation of view to come out. And can write the function help procedure through a plait to provide the help of various what lies in one's power, the one who make operate reduces the otiose error. Currently the HMI factory is also more and more, the function is also more and more strong, the price is also more and more low, the noodles of the usage are wide more and more. The HMI foreground can say that think ° to be good very.4 PLC correspondence and data transmissionAt a lot of situations, the list is is a smooth movement that can't guarantee theequipments by the control of the single machine, but pass the information exchanges of the equipments and equipments to attain the result that we want. For example fore pack and the examination of the empress work preface, we will arrive wrapping information feedback to examine the place, and examine the information of the place to also want the feedback to packing. Pass the information share thus to make both the chain connect, becoming a total body, the match of your that thus make is more close, at each other attain to reflect the result that mutually flick.The PLC correspondence has already come more more body now its value, at the PLC and correspondence between PLCs, can pass the communication of the information and the share of the datas to guarantee that of the equipments moderates mutually, the result that arrive already to repair with each other. Data conversion the adoption RS232 between PLC connect to come to the transmission data, but the RS232 pick up a people and can guarantee 10 meters only of deliver the distance, if in the distance of 1000 meters we can pass the RS485 to carry on the correspondence, the longer distance can pass the MODEL only to carry on deliver.The PLC data transmission is just to be called a form to it in a piece of and continuous address that the data of the inner part delivers the other party, we, the PLC of the other party passes to read data in the watch to carry on the operation. If the data that data in the watch is a to establish generally, that is just the general data transmission, for example today of oil price rise, I want to deliver the price of the oil price to lose the oil ally on board, that is the share of the data; But take data in the watch for an instruction procedure that controls the PLC, that had the difficulty very much, for example you have to control one pedestal robot to press the action work that you imagine, you will draw up for it the form that a procedure combine with the data sends out to pass by.Figure 3. PLC connection with experiments board.4.1 Form of information transmission4.1.1 Simplex and DuplexThe form that information transport contain Simplex, the Half duplex and the Full duplex.The meaning of the Simplex also is to say both, a can send out only, but a can receive only, for example a spy he can receive the designation of the superior only, but can't give the superior reply; Half duplex is also 2 and can can send out similar to accept the data, but can't send out and accept at the same time, for example when you make a phone call is to can't answer the phone, the other party also; But the Half duplex is both can send out and accept the data, and can send out and accept at the same time. Be like the Internet is a typical example.4.1.2 Synchronous and AsynchronousThe process that information transport also has synchronous and asynchronous: The data line and the clock lines are synchronous when synchronous meaning lie in sending out the data, is also the data signal and the clock signals to be carry on by the CPU to send out at the same time, this needs to all want the specialized clock signal each other to carry on the transmission and connect to send, and is constrained, the characteristics of this kind of method lies in its speed very quick, but correspond work time of take up the CPU and also want to be long oppositely, at the same time the technique difficulty also very big. Itsrequest lies in can'ting have an error margins in a datas deliver, otherwise the whole pieceaccording to compare the occurrence mistake, this on the hardware is a bigger difficulty. Applied more and more extensive in some appropriative equipmentses, be like the appropriative medical treatment equipments, the numerical signal equipments...etc., in compare the one data deliver, its result is very good.And asynchronous is an application the most extensive, this receive benefit in it of technique difficulty is opposite and want to be small, at the same time not need to prepare the specialized clock signal, its characteristics to lie in, its data is partition, the long-lost send out and accept, be the CPU is too busy of time can grind to a stop sex to work, also reduced the difficulty on the hardware, the data throw to lose at the same time opposite want to be little, we can pass the examination of the data to observe whether the data that we send out has the mistake or not, be like strange accidentally the method, tired addition and eight efficacies method etc., can use to helps whether the data that we examine to send out have or not the mistake occurrence, pass the feedback to carry on the discriminator.4.1.3 Parallel and SerialA line of transmission of the information contain a string of and combine the cent of: The usual PLC is 8 machines, certainly also having 16 machines. We can be an at the time of sending out the data a send out to the other party, also can be 88 send out the data to the other party, an and 8 differentiationses are also the as that we say to send out the data and combine sends out the data. A speed is more and slowly, but as long as 2 or three lines can solve problem, and can use the telephone line to carry on the long range control. But combine the oscular transmission speed is very quick of, it is a string of oscular of 25600%, occupy the advantage in the short distance, the in view of the fact TTL electricity is even, being limited by the scope of one meter generally, it combine unwell used for the data transmission of the long pull, thus the cost is too expensive.Under a lot of circumstances we are total to like to adopt the string to combine the conversion chip to carry on deliver, under this kind of circumstance not need us to carry on to depositted the machine to establish too and complicatedly, but carry on the data exchanges through the data transmission instruction directly, but is not a very viable way in the correspondence, because the PLC of the other party must has been wait for your data exportation at the time of sending out the data, it can't do other works.4.2 InterruptWhen you are reading the book, you hear someone knock on door, you stop to start up of affair, open the door and combine to continue with the one who knock on door a dialogue, the telephone of this time rang, you signal hint to connect a telephone, afterconnecting the telephone through, return overdo come together knock on door to have a conversation, after dialogue complete, you continue again to see your book, this kind of circumstance we are called the interruption to it, it has the authority, also having sex of have the initiative, the PLC had such function .Its characteristics lie in us and may meet the urgently abrupt affairs in the operation process of the equipments, we want to stop to start immediately up of work, the whereabouts manages the more important affair, this kind of circumstance is we usually meet of, PLC while carry out urgent mission, total will keep the current appearance first, for example the address of the procedure, CPU of tired add the machine data etc., be like to to stick down which the book that we see is when we open the door the page or simply make a mark, because we treat and would still need to continue immediately after book of see the behind. The CPU always does the affair that should do according to our will, but your mistake of give it an affair, it also would be same to do, this we must notice.The interruption is not only a, sometimes existing jointly with the hour several inside break, break off to have the preferred Class, they will carry out the interruption of the higher Class according to person's request. This kind of breaks off the medium interruption to also became to break off the set. The Class that certainly break off is relevant according to various resources of CPU with internal PLC, also following a heap of capacity size of also relevant fasten.The contents that break off has a lot of kinds, for example the exterior break off, correspondence in of send out and accept the interruption and settle and the clock that count break off, still have the WDT to reset the interruption etc., they enriched the CPU to respond to the category while handle various business. Speak thus perhaps you can't comprehend the internal structure and operation orders of the interruption completely also, we do a very small example to explain.4.3 Emergency stop buttonEach equipments always will not forget a button, it also is at we meet the urgent circumstance use of, that is nasty to stop the button. When we meet the Human body trouble and surprised circumstances we as long as press it, the machine stops all operations immediately, and wait for processing the over surprised empress recover the operation again.Nasty stop the internal I/ O of the internal CPU of the button conjunction PLC to connect up, be to press button an exterior to trigger signal for CPU, the CPU carries on to the I/ O to examine again, being to confirm to have the exterior to trigger the signal, CPU protection the spot breaks off procedure counts the machine turn the homologous exteriorI/ O automatically in the procedure to go to also, be exterior interruption procedure processing complete, the procedure counts the machine to return the main procedure to continue to work.Have 1:00 can what to explain is we generally would nasty stop the button of exterior break off to rise to the tallest Class, thus guarantee the safety.4.4 PLC Counting functionWhen we are work a work piece, giving the PLC a signal, counting PLC inner part the machine add 1 to compute us for a day of workload, a count the machine and can solve problem in brief, certainly they also can keep the data under the condition of dropping the electricity, urging the data not to throw to lose, this is also what we hope earnestly.The PLC still has the function that the high class counts the machine, being us while accept some datas of high speed, the high speed that here say is the data of the in all aspects tiny second class, for example the bar code scanner is scanning the data continuously, calculating high-speed signal of the data processor DSP etc., we will adopt the high class to count the machine to help we carry on count. It at the PLC carries out the procedure once discover that the high class counts the machine to should of interruption, will let go of the work on the hand immediately. The trapezoid diagram procedure that passes by to weave the distance again explains the high class for us to carry out procedure to count machine would automatic performance to should of work, thus rise the Class that the high class counts the machine to high one Class.You heard too many this phrases perhaps:" crash", the meaning that is mostly is a workload of CPU to lead greatly, the internal resources shortage etc. the circumstance can't result in procedure circulate. The PLC also has the similar circumstance, there is a watchdog WDT in the inner part of PLC, we can establish time that a procedure of WDT circulate, being to appear the procedure to jump to turn the mistake in the procedure movement process or the procedure is busy, movement time of the procedure exceeds WDT constitution time, the CPU turn but the WDT reset the appearance. The procedure restarts the movement, but will not carry on the breakage to the interruption.Figure 4. Overall board design.5 PLC development in the futureThe PLC development has already entered for network ages of correspondence from the mode of the one, and together other works control the net plank and I/ O card planks to carry on the share easily. A state software can pass all se hardwares link, more animation picture of keep the view to carries on the control, and cans pass the Internet to carry on the control in the foreign land, the blast-off that is like the absolute being boat No.5 is to adopt this kind of way to make airship go up the sky.The development of the higher layer needs our continuous effort to obtain.The PLC emergence has already affected a few persons fully, we also obtained more knowledge and precepts from the top one experience of the generation, coming to the continuous development PLC technique, push it toward higher wave tide.References[1] R. Alur, C. Courcoubetis, and D. Dill. Model-Checking for Real-Time Systems.In Fifth Annual IEEE Symp. on Logic in Computer Science, pages 414{425.IEEE Press, 1990. [2] R. Alur and D.L. Dill. A theory of timed automata. Theoret. Comput. Sci.,126:183{235, 1994.[3] R. Alur, T. Henzinger, and E. Sontag, editors. Hybrid Systems III, volume 1066 of Lecture Notes in Computer Science. Springer-Verlag, 1996.[4] J. Bengtsson, K.G. Larsen, F. Larsson, P. Pettersson, and Wang Yi. Uppaal {a ToolSuite for Automatic Verification of Real-Time Systems. In Alur et al.[3]. 232{243.[5] D. Bosscher, I. Polak, and F. Vaandrager. Verification of an Audio Control Protocol. InH. Langmaack, W.-P. de Roever, and J. Vytopil, editors, Formal Techniques in Real-Time and Fault-Tolerant Systems, volume 863 of Lecture Notes in Computer Science, pages 170{192. Springer-Verlag, 1994.PLC technique discussion and future development, 2010, 130(9): 2436-2443.可编程控制器技术讨论与未来发展K.培根, M. 厄米尔通信教授, 德累斯顿科技大学,01062德累斯顿，德国摘要可编程逻辑控制器（PLC）是Richard E.Morley在1968年发明的一种具备运算功能的设备，现已被广泛的应用到工业中，包括制造系统、交通系统、化工过程设备等。
生产自动化毕业论文中英文资料外文翻译文献
生产自动化毕业论文中英文资料外文翻译文献随着科技的不断进步和人们对效率的追求，生产自动化已经成为现代工业的重要组成部份。
生产自动化通过引入先进的机械和电子设备，以及自动化控制系统，实现了生产过程的自动化和智能化。
本文将介绍一些关于生产自动化的研究和应用的外文翻译文献。
1. 文献一：《生产自动化的发展与趋势》这篇文献介绍了生产自动化的发展历程和未来的趋势。
文章指出，生产自动化的发展可以追溯到20世纪初，随着电子技术和计算机技术的不断进步，生产自动化得到了快速发展。
未来，生产自动化将更加注重智能化和柔性化，以适应不断变化的市场需求。
2. 文献二：《生产自动化在汽车创造业中的应用》这篇文献探讨了生产自动化在汽车创造业中的应用。
文章指出，汽车创造业是生产自动化的典型应用领域之一。
通过引入机器人和自动化生产线，汽车创造商可以大大提高生产效率和产品质量。
此外，生产自动化还可以减少人力成本和人为错误。
3. 文献三：《生产自动化对工作环境和员工的影响》这篇文献研究了生产自动化对工作环境和员工的影响。
文章指出，尽管生产自动化可以提高生产效率，但它也带来了一些负面影响。
例如，自动化设备的噪音和振动可能对员工的健康造成影响。
此外，自动化还可能导致一些工人失去工作机会。
因此，为了最大限度地发挥生产自动化的优势，必须采取适当的安全措施和培训计划。
4. 文献四：《生产自动化在食品加工行业中的应用》这篇文献讨论了生产自动化在食品加工行业中的应用。
文章指出，食品加工是一个复杂而繁琐的过程，生产自动化可以大大提高生产效率和产品质量。
通过引入自动化设备和控制系统，食品加工商可以减少人为错误和污染风险。
此外，生产自动化还可以实现对食品生产过程的精确控制和监测。
5. 文献五：《生产自动化在医药创造业中的应用》这篇文献探讨了生产自动化在医药创造业中的应用。
文章指出，医药创造是一个高度精细和复杂的过程，生产自动化可以提高生产效率和产品质量的同时，确保药品的安全和一致性。
自动化专业-外文文献-英文文献-外文翻译-plc方面
1、外文原文（复印件)A: Fundamentals of Single-chip MicrocomputerTh e si ng le-ch i p mi cr oc om pu ter is t he c ul mi nat i on o f bo th t h e d ev el op me nt o f th e d ig it al com p ut er an d t he int e gr at ed ci rc ui ta r gu ab ly th e t ow m os t s i gn if ic ant i nv en ti on s o f t h e 20t h c en tu ry[1].Th es e to w t ype s o f a rc hi te ct ur e a re fo un d i n s i ng le—ch ip m i cr oc om pu te r。
S o me em pl oy th e s p li t p ro gr am/d at a me mo ry of t he H a rv ar d ar ch it ect u re, sh ow n in Fi g.3-5A—1，ot he r s fo ll ow t hep h il os op hy, wi del y a da pt ed f or ge n er al—pu rp os e c o mp ut er s an dm i cr op ro ce ss or s, of ma ki ng no lo gi c al di st in ct io n be tw ee n p ro gr am a n d da ta m em or y a s i n th e Pr in cet o n ar ch it ec tu re,sh ow n in F ig。
3-5A-2.In g en er al te r ms a s in gl e—ch i p mi cr oc om pu ter isc h ar ac te ri zed b y the i nc or po ra tio n of al l t he uni t s o f a co mp ut er i n to a s in gl e de v i ce，as s ho wn i n F ig3—5A—3。
自动化外文参考文献(精选120个最新)
自动化外文参考文献（精选120个最新）自动化外文参考文献（精选120个最新）本文关键词：外文，参考文献，自动化，精选，最新自动化外文参考文献（精选120个最新）本文简介：自动化（Automation）是指机器设备、系统或过程（生产、管理过程）在没有人或较少人的直接参与下，按照人的要求，经过自动检测、信息处理、分析判断、操纵控制，实现业绩预期的目标的过程。
下面是搜索整理的关于自动化参考文献，欢迎借鉴参考。
自动化外文释义一：[1]NazriNasir,Sha自动化外文参考文献（精选120个最新）本文内容：自动化（Automation）是指机器设备、系统或过程（生产、管理过程）在没有人或较少人的直接参与下，按照人的要求，经过自动检测、信息处理、分析判断、操纵控制，实现预期的目标的过程。
下面是搜索整理的关于自动化后面外文参考文献，欢迎借鉴参考。
自动化外文引文一：[1]Nazri Nasir,Shabudin Mat. An automated visual tracking measurement for quantifying wing and body motion of free-flying houseflies[J]. Measurement,2021,143.[2]Rishikesh Kulkarni,Earu Banoth,Parama Pal. Automated surface feature detection using fringe projection: An autoregressive modeling-based approach[J]. Optics and Lasers in Engineering,2021,121.[3]Tengyue Fang,Peicong Li,Kunning Lin,NengwangChen,Yiyong Jiang,Jixin Chen,Dongxing Yuan,Jian Ma. Simultaneous underway analysis of nitrate and nitrite inestuarine and coastal waters using an automated integrated syringe-pump-based environmental-water analyzer[J]. Analytica Chimica Acta,2021,1076.[4]Shengfeng Chen,Jian Liu,Xiaosong Zhang,XinyuSuo,Enhui Lu,Jilong Guo,Jianxun Xi. Development ofpositioning system for Nuclear-fuel rod automated assembly[J]. Robotics and Computer Integrated Manufacturing,2021,61.[5]Cheng-Ta Lee,Yu-Ching Lee,Albert Y. Chen. In-building automated external defibrillator location planning and assessment through building information models[J]. Automation in Construction,2021,106.[6]Torgeir Aleti,Jason I. Pallant,Annamaria Tuan,Tom van Laer. Tweeting with the Stars: Automated Text Analysis of the Effect of Celebrity Social Media ications on ConsumerWord of Mouth[J]. Journal of Interactive Marketing,2021,48.[7]Daniel Bacioiu,Geoff Melton,MayorkinosPapaelias,Rob Shaw. Automated defect classification of SS304 TIG welding process using visible spectrum camera and machine learning[J]. NDT and E International,2021,107.[8]Marcus von der Au,Max Schwinn,KatharinaKuhlmeier,Claudia Büchel,Bj?rn Meermann. Development of an automated on-line purification HPLC single cell-ICP-MS approach for fast diatom analysis[J]. Analytica ChimicaActa,2021,1077.[9]Jitendra Mehar,Ajam Shekh,Nethravathy M. U.,R. Sarada,Vikas Singh Chauhan,Sandeep Mudliar. Automation ofpilot-scale open raceway pond: A case study of CO 2 -fed pHcontrol on Spirulina biomass, protein and phycocyanin production[J]. Journal of CO2 Utilization,2021,33.[10]John T. Sloop,Henry J.B. Bonilla,TinaHarville,Bradley T. Jones,George L. Donati. Automated matrix-matching calibration using standard dilution analysis withtwo internal standards and a simple three-port mixing chamber[J]. Talanta,2021,205.[11]Daniel J. Spade,Cathy Yue Bai,ChristyLambright,Justin M. Conley,Kim Boekelheide,L. Earl Gray. Corrigendum to “Validation of an automated counting procedure for phthalate-induced testicular multinucleated germ cells” [Toxicol. Lett. 290 (2021) 55–61][J]. Toxicology Letters,2021,313.[12]Christian P. Janssen,Shamsi T. Iqbal,Andrew L. Kun,Stella F. Donker. Interrupted by my car? Implications of interruption and interleaving research for automatedvehicles[J]. International Journal of Human - Computer Studies,2021,130.[13]Seunguk Lee,Si Kuan Thio,Sung-Yong Park,Sungwoo Bae. An automated 3D-printed smartphone platform integrated with optoelectrowetting (OEW) microfluidic chip for on-site monitoring of viable algae in water[J]. Harmful Algae,2021,88.[14]Yuxia Duan,Shicai Liu,Caiqi Hu,Junqi Hu,Hai Zhang,Yiqian Yan,Ning Tao,Cunlin Zhang,Xavier Maldague,Qiang Fang,Clemente Ibarra-Castanedo,Dapeng Chen,Xiaoli Li,Jianqiao Meng. Automated defect classification in infrared thermography based on a neural network[J]. NDT and E International,2021,107.[15]Alex M. Pagnozzi,Jurgen Fripp,Stephen E. Rose. Quantifying deep grey matter atrophy using automated segmentation approaches: A systematic review of structural MRI studies[J]. NeuroImage,2021,201.[16]Jin Ye,Zhihong Xuan,Bing Zhang,Yu Wu,LiLi,Songshan Wang,Gang Xie,Songxue Wang. Automated analysis of ochratoxin A in cereals and oil by iaffinity magnetic beads coupled to UPLC-FLD[J]. Food Control,2021,104.[17]Anne Bech Risum,Rasmus Bro. Using deep learning to evaluate peaks in chromatographic data[J].Talanta,2021,204.[18]Faris Elghaish,Sepehr Abrishami,M. Reza Hosseini,Soliman Abu-Samra,Mark Gaterell. Integrated project delivery with BIM: An automated EVM-based approach[J]. Automation in Construction,2021,106.[19]Carl J. Pearson,Michael Geden,Christopher B. Mayhorn. Who's the real expert here? Pedigree's unique bias on trust between human and automated advisers[J]. Applied Ergonomics,2021,81.[20]Vibhas Mishra,Dani?l M.J. Peeters,Mostafa M. Abdalla. Stiffness and buckling analysis of variablestiffness laminates including the effect of automated fibre placement defects[J]. Composite Structures,2021,226.[21]Jenny S. Wesche,Andreas Sonderegger. When computers take the lead: The automation of leadership[J]. Computers in Human Behavior,2021,101.[22]Murat Ayaz,Hüseyin Yüksel. Design of a new cost-efficient automation system for gas leak detection in industrial buildings[J]. Energy & Buildings,2021,200.[23]Stefan A. Mann,Juliane Heide,Thomas Knott,Razvan Airini,Florin Bogdan Epureanu,Alexandru-FlorianDeftu,Antonia-Teona Deftu,Beatrice Mihaela Radu,Bogdan Amuzescu. Recording of multiple ion current components and action potentials in human induced pluripotent stem cell-derived cardiomyocytes via automated patch-clamp[J]. Journal of Pharmacological and Toxicological Methods,2021,100.[24]Rhar? de Almeida Cardoso,Alexandre Cury,Flavio Barbosa. Automated real-time damage detection strategy using raw dynamic measurements[J]. Engineering Structures,2021,196.[25]Mengmeng Zhong,Tielong Wang,Chengdu Qi,Guilong Peng,Meiling Lu,Jun Huang,Lee Blaney,Gang Yu. Automated online solid-phase extraction liquid chromatography tandem mass spectrometry investigation for simultaneous quantification of per- and polyfluoroalkyl substances, pharmaceuticals and personal care products, and organophosphorus flame retardants in environmental waters[J]. Journal of Chromatography A,2021,1602.[26]Pau Climent-Pér ez,Susanna Spinsante,Alex Mihailidis,Francisco Florez-Revuelta. A review on video-based active and assisted living technologies for automated lifelogging[J]. Expert Systems With Applications,2021,139.[27]William Snyder,Marisa Patti,Vanessa Troiani. An evaluation of automated tracing for orbitofrontal cortexsulcogyral pattern typing[J]. Journal of Neuroscience Methods,2021,326.[28]Juan Manuel Davila Delgado,LukumonOyedele,Anuoluwapo Ajayi,Lukman Akanbi,OlugbengaAkinade,Muhammad Bilal,Hakeem Owolabi. Robotics and automated systems in construction: Understanding industry-specific challenges for adoption[J]. Journal of Building Engineering,2021,26.[29]Mohamed Taher Alrefaie,Stever Summerskill,Thomas W Jackon. In a heart beat: Using driver’s physiological changes to determine the quality of a takeover in highly automated vehicles[J]. Accident Analysis andPrevention,2021,131.[30]Tawseef Ayoub Shaikh,Rashid Ali. Automated atrophy assessment for Alzheimer's disease diagnosis from brain MRI images[J]. Magnetic Resonance Imaging,2021,62.自动化外文参考文献二：[31]Vaanathi Sundaresan,Giovanna Zamboni,Campbell Le Heron,Peter M. Rothwell,Masud Husain,Marco Battaglini,Nicola De Stefano,Mark Jenkinson,Ludovica Griffanti. Automatedlesion segmentation with BIANCA: Impact of population-level features, classification algorithm and locally adaptive thresholding[J]. NeuroImage,2021,202.[32]Ho-Jun Suk,Edward S. Boyden,Ingrid van Welie. Advances in the automation of whole-cell patch clamp technology[J]. Journal of Neuroscience Methods,2021,326.[33]Ivana Duznovic,Mathias Diefenbach,Mubarak Ali,Tom Stein,Markus Biesalski,Wolfgang Ensinger. Automated measuring of mass transport through synthetic nanochannels functionalized with polyelectrolyte porous networks[J]. Journal of Membrane Science,2021,591.[34]James A.D. Cameron,Patrick Savoie,Mary E.Kaye,Erik J. Scheme. Design considerations for the processing system of a CNN-based automated surveillance system[J]. Expert Systems With Applications,2021,136.[35]Ebrahim Azadniya,Gertrud E. Morlock. Automated piezoelectric spraying of biological and enzymatic assays for effect-directed analysis of planar chromatograms[J]. Journal of Chromatography A,2021,1602.[36]Lilla Z?llei,Camilo Jaimes,Elie Saliba,P. Ellen Grant,Anastasia Yendiki. TRActs constrained by UnderLying INfant anatomy (TRACULInA): An automated probabilistic tractography tool with anatomical priors for use in the newborn brain[J]. NeuroImage,2021,199.[37]Kate?ina Fikarová,David J. Cocovi-Solberg,María Rosende,Burkhard Horstkotte,Hana Sklená?ová,Manuel Miró. A flow-based platform hyphenated to on-line liquid chromatography for automatic leaching tests of chemical additives from microplastics into seawater[J]. Journal of Chromatography A,2021,1602.[38]Darko ?tern,Christian Payer,Martin Urschler. Automated age estimation from MRI volumes of the hand[J]. Medical Image Analysis,2021,58.[39]Jacques Blum,Holger Heumann,Eric Nardon,Xiao Song. Automating the design of tokamak experiment scenarios[J]. Journal of Computational Physics,2021,394.[40]Elton F. de S. Soares,Carlos Alberto V.Campos,Sidney C. de Lucena. Online travel mode detection method using automated machine learning and feature engineering[J]. Future Generation Computer Systems,2021,101.[41]M. Marouli,S. Pommé. Autom ated optical distance measurements for counting at a defined solid angle[J].Applied Radiation and Isotopes,2021,153.[42]Yi Dai,Zhen-Hua Yu,Jian-Bo Zhan,Bao-Shan Yue,Jiao Xie,Hao Wang,Xin-Sheng Chai. Determination of starch gelatinization temperatures by an automated headspace gas chromatography[J]. Journal of Chromatography A,2021,1602.[43]Marius Tarp?,Tobias Friis,Peter Olsen,MartinJuul,Christos Georgakis,Rune Brincker. Automated reduction of statistical errors in the estimated correlation functionmatrix for operational modal analysis[J]. Mechanical Systems and Signal Processing,2021,132.[44]Wenxia Dai,Bisheng Yang,Xinlian Liang,ZhenDong,Ronggang Huang,Yunsheng Wang,Wuyan Li. Automated fusionof forest airborne and terrestrial point clouds throughcanopy density analysis[J]. ISPRS Journal of Photogrammetry and Remote Sensing,2021,156.[45]Jyh-Haur Woo,Marcus Ang,Hla Myint Htoon,Donald Tan. Descemet Membrane Endothelial Keratoplasty Versus Descemet Stripping Automated Endothelial Keratoplasty andPenetrating Keratoplasty[J]. American Journal of Ophthalmology,2021,207.[46]F. Wilde,S. Marsen,T. Stange,D. Moseev,J.W. Oosterbeek,H.P. Laqua,R.C. Wolf,K. Avramidis,G.Gantenbein,I.Gr. Pagonakis,S. Illy,J. Jelonnek,M.K. Thumm,W7-X team. Automated mode recovery for gyrotrons demonstrated at Wendelstein 7-X[J]. Fusion Engineering and Design,2021,148.[47]Andrew Kozbial,Lekhana Bhandary,Shashi K. Murthy. Effect of yte seeding density on dendritic cell generation in an automated perfusion-based culture system[J]. Biochemical Engineering Journal,2021,150.[48]Wen-Hao Su,Steven A. Fennimore,David C. Slaughter. Fluorescence imaging for rapid monitoring of translocation behaviour of systemic markers in snap beans for automatedcrop/weed discrimination[J]. Biosystems Engineering,2021,186.[49]Ki-Taek Lim,Dinesh K. Patel,Hoon Se,JanghoKim,Jong Hoon Chung. A fully automated bioreactor system for precise control of stem cell proliferation anddifferentiation[J]. Biochemical Engineering Journal,2021,150.[50]Mitchell L. Cunningham,Michael A. Regan,Timothy Horberry,Kamal Weeratunga,Vinayak Dixit. Public opinion about automated vehicles in Australia: Results from a large-scale national survey[J]. Transportation Research Part A,2021,129.[51]Yi Xie,Qiaobei You,Pingyang Dai,Shuyi Wang,Peiyi Hong,Guokun Liu,Jun Yu,Xilong Sun,Yongming Zeng. How to achieve auto-identification in Raman analysis by spectral feature extraction & Adaptive Hypergraph[J].Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy,2021,222.[52]Ozal Yildirim,Muhammed Talo,Betul Ay,Ulas Baran Baloglu,Galip Aydin,U. Rajendra Acharya. Automated detection of diabetic subject using pre-trained 2D-CNN models with frequency spectrum images extracted from heart ratesignals[J]. Computers in Biology and Medicine,2021,113.[53]Marius Kern,Laura Tusa,Thomas Lei?ner,Karl Gerald van den Boogaart,Jens Gutzmer. Optimal sensor selection for sensor-based sorting based on automated mineralogy data[J]. Journal of Cleaner Production,2021,234.[54]Karim Keddadouche,Régis Braucher,Didier L.Bourlès,Mélanie Baroni,Valéry Guillou,La?titia Léanni,Georges Auma?tre. Design and performance of an automated chemical extraction bench for the preparation of 10 Be and 26 Al targets to be analyzed by accelerator mass spectrometry[J]. Nuclear Inst. and Methods in Physics Research, B,2021,456.[55]Christian P. Janssen,Stella F. Donker,Duncan P. Brumby,Andrew L. Kun. History and future of human-automation interaction[J]. International Journal of Human - Computer Studies,2021,131.[56]Victoriya Orlovskaya,Olga Fedorova,Michail Nadporojskii,Raisa Krasikova. A fully automated azeotropic drying free synthesis of O -(2-[ 18 F]fluoroethyl)- l -tyrosine ([ 18 F]FET) using tetrabutylammonium tosylate[J]. Applied Radiation and Isotopes,2021,152.[57]Dinesh Krishnamoorthy,Kjetil Fjalestad,Sigurd Skogestad. Optimal operation of oil and gas production usingsimple feedback control structures[J]. Control Engineering Practice,2021,91.[58]Nick Oliver,Thomas Calvard,Kristina Poto?nik. Safe limits, mindful organizing and loss of control in commercial aviation[J]. Safety Science,2021,120.[59]Bo Sui,Nils Lubbe,Jonas B?rgman. A clustering approach to developing car-to-two-wheeler test scenarios for the assessment of Automated Emergency Braking in China using in-depth Chinese crash data[J]. Accident Analysis and Prevention,2021,132.[60]Ji-Seok Yoon,Eun Young Choi,Maliazurina Saad,Tae-Sun Choi. Automated integrated system for stained neuron detection: An end-to-end framework with a high negative predictive rate[J]. Computer Methods and Programs in Biomedicine,2021,180.自动化外文参考文献八：[61]Min Wang,Barbara E. Glick-Wilson,Qi-Huang Zheng. Facile fully automated radiosynthesis and quality control of O -(2-[ 18 F]fluoroethyl)- l -tyrosine ([ 18 F]FET) for human brain tumor imaging[J]. Applied Radiation andIsotopes,2021,154.[62]Fabian Pütz,Finbarr Murphy,Martin Mullins,LisaO'Malley. Connected automated vehicles and insurance: Analysing future market-structure from a business ecosystem perspective[J]. Technology in Society,2021,59.[63]Victoria A. Banks,Neville A. Stanton,Katherine L. Plant. Who is responsible for automated driving? A macro-level insight into automated driving in the United Kingdom using the Risk Management Framework and Social NetworkAnalysis[J]. Applied Ergonomics,2021,81.[64]Yingjun Ye,Xiaohui Zhang,Jian Sun. Automated vehicle’s behavior decision making using deep reinforcement learning and high-fidelity simulation environment[J]. Transportation Research Part C,2021,107.[65]Hasan Alkaf,Jameleddine Hassine,TahaBinalialhag,Daniel Amyot. An automated change impact analysis approach for User Requirements Notation models[J]. TheJournal of Systems & Software,2021,157.[66]Zonghua Luo,Jiwei Gu,Robert C. Dennett,Gregory G. Gaehle,Joel S. Perlmutter,Delphine L. Chen,Tammie L.S. Benzinger,Zhude Tu. Automated production of a sphingosine-1 phosphate receptor 1 (S1P1) PET radiopharmaceutical [ 11C]CS1P1 for human use[J]. Applied Radiation andIsotopes,2021,152.[67]Sarfraz Qureshi,Wu Jiacheng,Jeroen Anton van Kan. Automated alignment and focusing system for nuclear microprobes[J]. Nuclear Inst. and Methods in Physics Research, B,2021,456.[68]Srikanth Sagar Bangaru,Chao Wang,MarwaHassan,Hyun Woo Jeon,Tarun Ayiluri. Estimation of the degreeof hydration of concrete through automated machine learning based microstructure analysis – A study on effect of image magnification[J]. Advanced Engineering Informatics,2021,42.[69]Fang Tengyue,Li Peicong,Lin Kunning,Chen Nengwang,Jiang Yiyong,Chen Jixin,Yuan Dongxing,Ma Jian. Simultaneous underway analysis of nitrate and nitrite in estuarine and coastal waters using an automated integrated syringe-pump-based environmental-water analyzer.[J]. Analytica chimica acta,2021,1076.[70]Ramos Inês I,Carl Peter,Schneider RudolfJ,Segundo Marcela A. Automated lab-on-valve sequential injection ELISA for determination of carbamazepine.[J]. Analytica chimica acta,2021,1076.[71]Au Marcus von der,Schwinn Max,Kuhlmeier Katharina,Büchel Claudia,Meermann Bj?rn. Development of an automated on-line purification HPLC single cell-ICP-MS approach for fast diatom analysis.[J]. Analytica chimica acta,2021,1077.[72]Risum Anne Bech,Bro Rasmus. Using deep learning to evaluate peaks in chromatographic data.[J].Talanta,2021,204.[73]Spade Daniel J,Bai Cathy Yue,LambrightChristy,Conley Justin M,Boekelheide Kim,Gray L Earl. Corrigendum to "Validation of an automated counting procedure for phthalate-induced testicular multinucleated germ cells" [Toxicol. Lett. 290 (2021) 55-61].[J]. Toxicologyletters,2021,313.[74]Zhong Mengmeng,Wang Tielong,Qi Chengdu,Peng Guilong,Lu Meiling,Huang Jun,Blaney Lee,Yu Gang. Automated online solid-phase extraction liquid chromatography tandem mass spectrometry investigation for simultaneousquantification of per- and polyfluoroalkyl substances, pharmaceuticals and personal care products, and organophosphorus flame retardants in environmental waters.[J]. Journal of chromatography. A,2021,1602.[75]Stein Christopher J,Reiher Markus. autoCAS: A Program for Fully Automated MulticonfigurationalCalculations.[J]. Journal of computationalchemistry,2021,40(25).[76]Alrefaie Mohamed Taher,Summerskill Stever,Jackon Thomas W. In a heart beat: Using driver's physiological changes to determine the quality of a takeover in highly automated vehicles.[J]. Accident; analysis andprevention,2021,131.[77]Shaikh Tawseef Ayoub,Ali Rashid. Automatedatrophy assessment for Alzheimer's disease diagnosis frombrain MRI images.[J]. Magnetic resonance imaging,2021,62.[78]Xie Yi,You Qiaobei,Dai Pingyang,Wang Shuyi,Hong Peiyi,Liu Guokun,Yu Jun,Sun Xilong,Zeng Yongming. How to achieve auto-identification in Raman analysis by spectral feature extraction & Adaptive Hypergraph.[J]. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy,2021,222.[79]Azadniya Ebrahim,Morlock Gertrud E. Automated piezoelectric spraying of biological and enzymatic assays for effect-directed analysis of planar chromatograms.[J]. Journal of chromatography. A,2021,1602.[80]Fikarová Kate?ina,Cocovi-Solberg David J,Rosende María,Horstkotte Burkhard,Sklená?ová Hana,Miró Manuel. Aflow-based platform hyphenated to on-line liquid chromatography for automatic leaching tests of chemical additives from microplastics into seawater.[J]. Journal of chromatography. A,2021,1602.[81]Moitra Dipanjan,Mandal Rakesh Kr. Automated AJCC (7th edition) staging of non-small cell lung cancer (NSCLC) using deep convolutional neural network (CNN) and recurrent neural network (RNN).[J]. Health information science and systems,2021,7(1).[82]Ramos-Payán María. Liquid - Phase microextraction and electromembrane extraction in millifluidic devices:A tutorial.[J]. Analytica chimica acta,2021,1080.[83]Z?llei Lilla,Jaimes Camilo,Saliba Elie,Grant P Ellen,Yendiki Anastasia. TRActs constrained by UnderLying INfant anatomy (TRACULInA): An automated probabilistic tractography tool with anatomical priors for use in the newborn brain.[J]. NeuroImage,2021,199.[84]Sedghi Gamechi Zahra,Bons Lidia R,Giordano Marco,Bos Daniel,Budde Ricardo P J,Kofoed Klaus F,Pedersen Jesper Holst,Roos-Hesselink Jolien W,de Bruijne Marleen. Automated 3D segmentation and diameter measurement of the thoracic aorta on non-contrast enhanced CT.[J]. European radiology,2021,29(9).[85]Smith Claire,Galland Barbara C,de Bruin Willemijn E,Taylor Rachael W. Feasibility of Automated Cameras to Measure Screen Use in Adolescents.[J]. American journal of preventive medicine,2021,57(3).[86]Lambert Marie-?ve,Arsenault Julie,AudetPascal,Delisle Benjamin,D'Allaire Sylvie. Evaluating an automated clustering approach in a perspective of ongoing surveillance of porcine reproductive and respiratory syndrome virus (PRRSV) field strains.[J]. Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases,2021,73.[87]Slanetz Priscilla J. Does Computer-aided Detection Help in Interpretation of Automated Breast US?[J]. Radiology,2021,292(3).[88]Sander Laura,Pezold Simon,Andermatt Simon,Amann Michael,Meier Dominik,Wendebourg Maria J,Sinnecker Tim,Radue Ernst-Wilhelm,Naegelin Yvonne,Granziera Cristina,Kappos Ludwig,Wuerfel Jens,Cattin Philippe,Schlaeger Regina. Accurate, rapid and reliable, fully automated MRI brainstem segmentation for application in multiple sclerosis and neurodegenerative diseases.[J]. Human brainmapping,2021,40(14).[89]Pajkossy Péter,Sz?ll?si ?gnes,Racsmány Mihály. Retrieval practice decreases processing load of recall: Evidence revealed by pupillometry.[J]. International journal of psychophysiology : official journal of the International Organization of Psychophysiology,2021,143.[90]Kaiser Eric A,Igdalova Aleksandra,Aguirre Geoffrey K,Cucchiara Brett. A web-based, branching logic questionnaire for the automated classification ofmigraine.[J]. Cephalalgia : an international journal of headache,2021,39(10).自动化外文参考文献四：[91]Kim Jin Ju,Park Younhee,Choi Dasom,Kim Hyon Suk. Performance Evaluation of a New Automated Chemiluminescent Ianalyzer-Based Interferon-Gamma Releasing Assay AdvanSure I3 in Comparison With the QuantiFERON-TB Gold In-Tube Assay.[J]. Annals of laboratory medicine,2021,40(1).[92]Yang Shanling,Gao Xican,Liu Liwen,Shu Rui,Yan Jingru,Zhang Ge,Xiao Yao,Ju Yan,Zhao Ni,Song Hongping. Performance and Reading Time of Automated Breast US with or without Computer-aided Detection.[J]. Radiology,2021,292(3).[93]Hung Andrew J,Chen Jian,Ghodoussipour Saum,OhPaul J,Liu Zequn,Nguyen Jessica,Purushotham Sanjay,Gill Inderbir S,Liu Yan. A deep-learning model using automated performance metrics and clinical features to predict urinary continence recovery after robot-assisted radical prostatectomy.[J]. BJU international,2021,124(3).[94]Kim Ryan S,Kim Gene. Double Descemet Stripping Automated Endothelial Keratoplasty (DSAEK): Secondary DSAEK Without Removal of the Failed Primary DSAEK Graft.[J]. Ophthalmology,2021,126(9).[95]Sargent Alexandra,Theofanous Ioannis,Ferris Sarah. Improving laboratory workflow through automated pre-processing of SurePath specimens for human papillomavirus testing with the Abbott RealTime assay.[J]. Cytopathology : official journal of the British Society for Clinical Cytology,2021,30(5).[96]Saba Tanzila. Automated lung nodule detection and classification based on multiple classifiers voting.[J]. Microscopy research and technique,2021,82(9).[97]Ivan D. Welsh,Jane R. Allison. Automated simultaneous assignment of bond orders and formal charges[J]. Journal of Cheminformatics,2021,11(1).[98]Willem Jespers,MauricioEsguerra,Johan ?qvist,Hugo Gutiérrez-de-Terán. QligFEP: an automated workflow for small molecule free energycalculations in Q[J]. Journal of Cheminformatics,2021,11(1).[99]Manav Raj,Robert Seamans. Primer on artificial intelligence and robotics[J]. Journal of OrganizationDesign,2021,8(1).[100]Yvette Pronk,Peter Pilot,Justus M.Brinkman,Ronald J. Heerwaarden,Walter Weegen. Response rate and costs for automated patient-reported outcomes collection alone compared to combined automated and manual collection[J]. Journal of Patient-Reported Outcomes,2021,3(1).[101]Tristan Martin,Ana?s Moyon,Cyril Fersing,Evan Terrier,Aude Gouillet,Fabienne Giraud,BenjaminGuillet,Philippe Garrigue. Have you looked for “stranger things” in your automated PET dose dispensing system? A process and operators qualification scheme[J]. EJNMMI Radiopharmacy and Chemistry,2021,4(1).[102]Manuel Peuster,Michael Marchetti,Ger ardo García de Blas,Holger Karl. Automated testing of NFV orchestrators against carrier-grade multi-PoP scenarios using emulation-based smoke testing[J]. EURASIP Journal on Wireless ications and Networking,2021,2021(1).[103]R. Ferrús,O. Sallent,J. Pérez-Romero,R. Agustí. On the automation of RAN slicing provisioning: solution framework and applicability examples[J]. EURASIP Journal on Wireless ications and Networking,2021,2021(1).[104]Duo Li,Peter Wagner. Impacts of gradual automated vehicle penetration on motorway operation: a comprehensive evaluation[J]. European Transport Research Review,2021,11(1).[105]Abel Gómez,Ricardo J. Rodríguez,María-Emilia Cambronero,Valentín Valero. Profiling the publish/subscribe paradigm for automated analysis using colored Petri nets[J]. Software & Systems Modeling,2021,18(5).[106]Dipanjan Moitra,Rakesh Kr. Mandal. Automated AJCC (7th edition) staging of non-small cell lung cancer (NSCLC) using deep convolutional neural network (CNN) and recurrent neural network (RNN)[J]. Health Information Science and Systems,2021,7(1).[107]Marta D’Alonzo,Laura Martincich,Agnese Fenoglio,Valentina Giannini,Lisa Cellini,ViolaLiberale,Nicoletta Biglia. Nipple-sparing mastectomy: external validation of a three-dimensional automated method to predict nipple occult tumour involvement on preoperative breast MRI[J]. European Radiology Experimental,2021,3(1).[108]N. V. Dozmorov,A. S. Bogomolov,A. V. Baklanov. An Automated Apparatus for Measuring Spectral Dependences ofthe Mass Spectra and Velocity Map Images of Photofragments[J]. Instruments and Experimental Techniques,2021,62(4).[109]Zhiqiang Sun,Bingzhao Gao,Jiaqi Jin,Kazushi Sanada. Modelling, Analysis and Simulation of a Novel Automated Manual Transmission with Gearshift Assistant Mechanism[J]. International Journal of Automotive Technology,2021,20(5).[110]Andrés Vega,Mariano Córdoba,Mauricio Castro-Franco,Mónica Balzarini. Protocol for automating errorremoval from yield maps[J]. Precision Agriculture,2021,20(5).[111]Bethany L. Lussier,DaiWai M. Olson,Venkatesh Aiyagari. Automated Pupillometry in Neurocritical Care: Research and Practice[J]. Current Neurology and Neuroscience Reports,2021,19(10).[112] B. Haskali,Peter D. Roselt,David Binns,Amit Hetsron,Stan Poniger,Craig A. Hutton,Rodney J. Hicks. Automated preparation of clinical grade [ 68 Ga]Ga-DOTA-CP04, a cholecystokinin-2 receptor agonist, using iPHASE MultiSyn synthesis platform[J]. EJNMMI Radiopharmacy andChemistry,2021,4(1).[113]Ju Hyun Ahn,Minho Na,Sungkwan Koo,HyunsooChun,Inhwan Kim,Jong Won Hur,Jae Hyuk Lee,Jong G. Ok. Development of a fully automated desktop chemical vapor deposition system for programmable and controlled carbon nanotube growth[J]. Micro and Nano Systems Letters,2021,7(1).[114]Kamellia Shahi,Brenda Y. McCabe,Arash Shahi. Framework for Automated Model-Based e-Permitting System forMunicipal Jurisdictions[J]. Journal of Management in Engineering,2021,35(6).[115]Ahmed Khalafallah,Yasmin Shalaby. Change Orders: Automating Comparative Data Analysis and Controlling Impacts in Public Projects[J]. Journal of Construction Engineering and Management,2021,145(11).[116]José ?. Martínez-Huertas,OlgaJastrzebska,Ricardo Olmos,José A. León. Automated summary evaluation with inbuilt rubric method: An alternative to constructed responses and multiple-choice testsassessments[J]. Assessment & Evaluation in Higher Education,2021,44(7).[117]Samsonov,Koshel,Walther,Jenny. Automated placement of supplementary contour lines[J]. International Journal of Geographical Information Science,2021,33(10).[118]Veronika V. Odintsova,Peter J. Roetman,Hill F. Ip,René Pool,Camiel M. Van der Laan,Klodiana-DaphneTona,Robert R.J.M. Vermeiren,Dorret I. Boomsma. Genomics of human aggression: current state of genome-wide studies and an automated systematic review tool[J]. PsychiatricGenetics,2021,29(5).[119]Sebastian Eggert,Dietmar W Hutmacher. In vitro disease models 4.0 via automation and high-throughput processing[J]. Biofabrication,2021,11(4).[120]Asad Mahmood,Faizan Ahmad,Zubair Shafiq,Padmini Srinivasan,Fareed Zaffar. A Girl Has No Name: Automated Authorship Obfuscation using Mutant-X[J]. Proceedings on Privacy Enhancing Technologies,2021,2021(4).。
自动化专业中英文对照外文翻译文献
中英文对照外文翻译Automation of professional developmentAutomation in the history of professional development, "industrial automation" professional and "control" professional development of the two main line, "industrial automation" professional from the first "industrial enterprises electrified" professional.In the 1950s, the New China was just founded, the 100-waste question, study the Soviet Union established system of higher education, Subdivision professional. Corresponding to the country in the construction of industrial automation and defense, military construction in automatic control, successively set up the "electrification of industrial enterprises" professional and "control" professional (at that time in many schools, "Control" professional secrecy is professional) . After several former professional name of evolution (see below), and gradually develop into a "biased towards applications, biased towards strong," Automation, and the latter to maintain professional name of "control" basically unchanged (in the early days also known as the "automatic learning And remote learning, "" Automatic Control System "professional), and gradually develop into a" biased towards theory, biased towards weak, "the automation professional, and come together in 1995, merged into aunified" automatic "professional . In 1998, according to the Ministry of Education announced the latest professional undergraduate colleges and universities directory, adjusted, the merger of the new "automated" professional include not only the original "automatic" professional (including "industrial automation" professional and "control" professional ), Also increased the "hydraulic transmission and control of" professional (part), "electrical technology" professional (part) and "aircraft guidance and control of" professional (part).Clearly, one of China's automation professional history of the development of China's higher education actually is a new development of the cause of a microcosm of the history, but also the history of New China industrial development of a miniature. Below "industrial automation" professional development of the main line of this example, a detailed review of its development process in the many professional name change (in real terms in the professional content changes) and its industrial building at the time of the close relationship.First a brief look at the world and China's professional division history. We know that now use the professional division is largely from the 19th century to the beginning of the second half of the first half of the 20th century stereotypes of the engineering, is basically industry (products) for the objects to the division, they have been the image of people Known as the "industry professionals" or "trade associations." At present the international education system in two categories, with Britain and the United States as the representative of the education system not yet out of "industry professionals" system, but has taken the "generalist" the road of education and the former Soviet Union for Europe (close to the Soviet Union) as the representative The education system, at the beginning of theimplementation of "professionals" education, professional-very small, although reforms repeatedly, but to the current "industry professionals" are still very obvious characteristics.In the 1950s, just after the founding of New China, a comprehensive study and the Soviet Union and sub-professional very small; Since reform and opening up, only to Britain and the United States to gradually as the representative of the education system to move closer, and gradually reduce the professional, the implementation of "generalist" education through a number of professional Restructuring and merger (the total number of professionals from the maximum of 1,343 kinds of gradually reducing the current 249 kinds), although not out of "industry professionals" and "Mei Ming," but many of the colleges and universities, mostly only one of a Professional, rather than the past more than a professional.Before that, China's first professional automation from the National University in 1952 when the first major readjustment of the establishment of professional - electrified professional industrial enterprises. At that time, the Soviet Union assistance to the construction of China's 156 large industrial enterprises, automation of much-needed electrical engineering and technical personnel, and such professional and technical personnel training, and then was very consistent with China's industrial construction. By the 1960s, professional name changed to "industrial electric and automation," the late 1970s when to resume enrollment "Electric Industrial Automation" professional. This is not only professional name changes, but has its profound meaning, it reflects China's industries from "electrified" step by step to the "automatic" into the real history and that part of the development trend of China's automation professional reflects how urgent countries Urgent for the country'seconomic construction services that period of history and development of real direction.1993, after four years of the third revision of the undergraduate professional directories, the State Education Commission issued a call "system integrity, more scientific and reasonable, the harmonization of norms," the "ordinary professional directory of undergraduate colleges and universities." "Electric Industrial Automation" and "production process automation" merger of the two professional electrician to set up a kind of "industrial automation" professional, by the then Ministry of Industry Machinery centralized management colleges and universities to set up industrial automation teaching guide at the Commission, responsible for the "Industrial Automation "professional teaching and guiding work at the same time," Control "was attributable to the professional category of electronic information, the then Ministry of Industry of electronic centralized management control to set up colleges and universities teaching guide at the Commission, responsible for the" control " Professional teaching guide our work. After the professional adjustment, further defined the "industrial automation" professional and "control" professional "- both strong and weak, hardware and software into consideration and control theory and practical system integration, and the movement control, process control and other targets of control "The common characteristics with the training objectives, but also the basic set of" industrial automation "biased towards strong, professional, biased towards applications," Control "professional biased towards weak, biased towards the theory of professional characteristics and pattern of division of labor. 1995, the State Education Commission promulgated the "(University) undergraduate engineering leading professional directory", the electrical category "industrialautomation" professional and the original electronic information such as "control" of professional electronic information into a new category of "automatic" professional . As this is the leading professional directory, are not enforced, coupled with general "industrial automation" strong or weak, both professional "into" a weak professional category of electronic information is not conducive to professional development and thus many Schools remain "industrial automation" professional and "control" the situation of professional co-exist. Since 1996 more, again commissioned by the Ministry of National Education Ministry of Industry and electronic machinery industries of other parts of the establishment of the new session (second session) centralized management guidance at the University Teaching Commission, making the leading professionals have not been effective Implemented.1998, to meet the country's economic construction of Kuan Koujing personnel training needs, further consolidation of professional and international "generalist" education track by the Ministry of Education announced a fourth revision of the latest "Universities Undergraduate Catalog." So far in the use of the directory, the total number of professionals from the third amendments to the 504 kinds of substantially reduced to 249 species, the original directory is strong, professional electrician and a weak professional category such as electronics and information into categories Electric power, the unity of Information, a former electrician at the same time kind of "industrial automation" professional and the type of electronic information "control" professional formal merger, together with the "hydraulic transmission and control of" professional (part) , "Electric technology" professional (part) and "aircraft guidance and controlof" professional (part), the composition of the new (enforcement) are electrical information such as "automatic" professional. According to statistics, so far the country has more than 200 colleges and universities set up this kind of "automatic" professional. If the name of automation as part of their professional expertise (such as "electrical engineering and automation," "mechanical design and manufacturing automation," "agricultural mechanization and automation" and other professionals) included Automation has undoubtedly is the largest in China A professional.Of the characteristics of China's automation professional:Recalling China's professional history of the development of automation, combined with the corresponding period of the construction of China's national economy to the demand for automation and automated the development of the cause, it is not difficult to sum up following professional characteristics:(1) China's automation professional is not only a relatively long history (since 1952 have been more than 50 years), and from the first day of the establishment of professional automation, has been a professional one of the countries in urgent need, therefore the number of students has also been The largest and most employers welcome the allocation of the professional one.(2) China's automation is accompanied by a professional from the electrification of China's industrial automation step by step to the development of stable development, professional direction and the main content from the first prominent electrified "the electrification of industrial enterprises" step by step for the development of both the electric and automation " Industrial electric and automation ", highlighting the electrical automation" Electric Industrial Automation "and prominent automation" industrial automation ", then the merger of professional education reform in1995 and" control "of professional content into a broader" automated " Professional. From which we can see that China's automation professional Although the initial study in the Soviet education system established under the general environment, but in their development and the Soviet Union or the United States and Britain did not copy the mode, but with China's national conditions (to meet national needs for The main goal) from the innovation and development of "cross-industry professionals," features the professional.自动化专业的发展自动化专业的发展历史中，有“工业自动化”专业与“自动控制”专业两条发展主线，其中“工业自动化”专业最早源于“工业企业电气化”专业。
机械设计制造及其自动化参考文献英文
机械设计制造及其自动化参考文献英文机械设计制造及其自动化参考文献英文：1. Chen, J., & Mei, X. (2016). A review of intelligent manufacturing in the context of Industry 4.0: From the perspective of quality management. Engineering, 2(4), 431-439.这篇文章回顾了智能制造在工业4.0背景下的发展，并从质量管理的角度进行了分析。
2. Wu, D., & Rosen, D. W. (2015). Cloud-based design and manufacturing: A new paradigm in digital manufacturing and design innovation. Computer-Aided Design, 59, 1-14.该研究探讨了基于云计算的设计和制造，认为这是数字制造和设计创新的新范式。
3. Wang, L., Trngren, M., & Onori, M. (2015). Current status and advancement of cyber-physical systems in manufacturing. Journal of Manufacturing Systems, 37, 517-527.这篇文章综述了制造业中物联网技术的现状和进展，强调了制造业中的网络化和物理化系统。
4. Xie, Y. M., & Shi, Y. (2008). A survey of intelligence-based manufacturing: Origins, concepts, and trends. IEEE Transactions on Industrial Informatics, 4(2), 102-120.该文章综述了智能制造的起源、概念和趋势，并对智能制造的方法和技术进行了详细描述。
毕业设计毕业论文电气工程及其自动化外文翻译中英文对照
毕业设计毕业论文电气工程及其自动化外文翻译中英文对照电气工程及其自动化外文翻译中英文对照一、引言电气工程及其自动化是一门涉及电力系统、电子技术、自动控制和信息技术等领域的综合学科。
本文将翻译一篇关于电气工程及其自动化的外文文献，并提供中英文对照。
二、文献翻译原文标题：Electric Engineering and Its Automation作者：John Smith出版日期：2020年摘要：本文介绍了电气工程及其自动化的基本概念和发展趋势。
首先，介绍了电气工程的定义和范围。
其次，探讨了电气工程在能源领域的应用，包括电力系统的设计和运行。
然后，介绍了电气工程在电子技术领域的重要性，包括电子设备的设计和制造。
最后，讨论了电气工程与自动控制和信息技术的结合，以及其在工业自动化和智能化领域的应用。
1. 介绍电气工程是一门研究电力系统和电子技术的学科，涉及发电、输电、配电和用电等方面。
电气工程的发展与电力工业的发展密切相关。
随着电力需求的增长和电子技术的进步，电气工程的重要性日益凸显。
2. 电气工程在能源领域的应用电气工程在能源领域的应用主要包括电力系统的设计和运行。
电力系统是由发电厂、输电线路、变电站和配电网络等组成的。
电气工程师负责设计和维护这些设施，以确保电力的可靠供应。
3. 电气工程在电子技术领域的重要性电气工程在电子技术领域的重要性体现在电子设备的设计和制造上。
电子设备包括电脑、手机、电视等消费电子产品，以及工业自动化设备等。
电气工程师需要掌握电子电路设计和数字信号处理等技术，以开发出高性能的电子设备。
4. 电气工程与自动控制和信息技术的结合电气工程与自动控制和信息技术的结合是电气工程及其自动化的核心内容。
自动控制技术可以应用于电力系统的运行和电子设备的控制，以提高系统的稳定性和效率。
信息技术则可以用于数据采集、处理和传输，实现对电力系统和电子设备的远程监控和管理。
5. 电气工程在工业自动化和智能化领域的应用电气工程在工业自动化和智能化领域的应用越来越广泛。
单片机自动化专业论文中英文对照外文翻译文献
中英文对照外文翻译文献Structure and function of the MCS-51 seriesStructure and function of the MCS-51 series one-chip computer is a name of a piece of one-chip computer series which Intel Company produces. This company introduced 8 top-grade one-chip computers of MCS-51 series in 1980 after introducing 8 one-chip computers of MCS-48 series in 1976. It belong to a lot of kinds this line of one-chip computer the chips have,such as 8051, 8031, 8751, 80C51BH, 80C31BH,etc., their basic composition, basic performance and instruction system are all the same. 8051 daily representatives- 51 serial one-chip computers .An one-chip computer system is made up of several following parts: ( 1) One microprocessor of 8 (CPU). ( 2) At slice data memory RAM (128B/256B),it use not depositting not can reading /data that write, such as result not middle of operation, final result and data wanted to show, etc. ( 3) Procedure memory ROM/EPROM (4KB/8KB ), is used to preserve the procedure , some initial data and form in slice. But does not take ROM/EPROM within some one-chipcomputers, such as 8031 , 8032, 80C ,etc.. ( 4) Four 8 run side by side I/O interface P0 four P3, each mouth can use as introduction , may use as exporting too. ( 5) Two timer / counter, each timer / counter may set up and count in the way, used to count to the external incident, can set up into a timing way too, and can according to count or result of timing realize the control of the computer. ( 6) Five cut off cutting off the control system of the source . ( 7) One all duplexing serial I/O mouth of UART (universal asynchronous receiver/transmitter (UART) ), is it realize one-chip computer or one-chip computer and serial communication of computer to use for. ( 8) Stretch oscillator and clock produce circuit, quartz crystal finely tune electric capacity need outer. Allow oscillation frequency as 12 megahertas now at most. Every the above-mentioned part was joined through the inside data bus .Among them, CPU is a core of the one-chip computer, it is the control of the computer and command centre, made up of such parts as arithmetic unit and controller , etc.. The arithmetic unit can carry on 8 persons of arithmetic operation and unit ALU of logic operation while including one, the 1 storing device temporarilies of 8, storing device 2 temporarily, 8's accumulation device ACC, register B and procedure state register PSW, etc. Person who accumulate ACC count by 2 input ends entered of checking etc. temporarily as one operation often, come from person who store 1 operation is it is it make operation to go on to count temporarily , operation result and loopback ACC with another one. In addition, ACC is often regarded as the transfer station of data transmission on 8051 inside . The same as general microprocessor, it is the busiest register. Help remembering that agreeing with A expresses in the order. The controller includes the procedure counter , the order is depositted, the order decipher, the oscillator and timing circuit, etc. The procedure counter is made up of counter of 8 for two, amounts to 16. It is a byte address counter of the procedure in fact, the content is the next IA that will carried out in PC. The content which changes it can change the direction that the procedure carries out . Shake the circuit in 8051 one-chip computers, only needouter quartz crystal and frequency to finely tune the electric capacity, its frequency range is its 12MHZ of 1.2MHZ. This pulse signal, as 8051 basic beats of working, namely the minimum unit of time. 8051 is the same as other computers, the work in harmony under the control of the basic beat, just like an orchestra according to the beat play that is commanded.There are ROM (procedure memory , can only read ) and RAM in 8051 slices (data memory, can is it can write ) two to read, they have each independent memory address space, dispose way to be the same with general memory of computer. Procedure 8051 memory and 8751 slice procedure memory capacity 4KB, address begin from 0000H, used for preserving the procedure and form constant. Data 8051- 8751 8031 of memory data memory 128B, address false 00FH, use for middle result to deposit operation, the data are stored temporarily and the data are buffered etc.. In RAM of this 128B, there is unit of 32 byteses that can be appointed as the job register, this and general microprocessor is different, 8051 slice RAM and job register rank one formation the same to arrange the location. It is not very the same that the memory of MCS-51 series one-chip computer and general computer disposes the way in addition. General computer for first address space, ROM and RAM can arrange in different space within the range of this address at will, namely the addresses of ROM and RAM, with distributing different address space in a formation. While visiting the memory, corresponding and only an address Memory unit, can ROM, it can be RAM too, and by visiting the order similarly. This kind of memory structure is called the structure of Princeton. 8051 memories are divided into procedure memory space and data memory space on the physics structure, there are four memory spaces in all: The procedure stores in one and data memory space outside data memory and one in procedure memory space and one outside one, the structure forms of this kind of procedure device and data memory separated form data memory, called Harvard structure. But use the angle from users, 8051 memory address space is divided into three kinds: (1) Inthe slice, arrange blocks of FFFFH , 0000H of location , in unison outside the slice (use 16 addresses). (2) The data memory address space outside one of 64KB, the address is arranged from 0000H 64KB FFFFH (with 16 addresses ) too to the location. (3) Data memory address space of 256B (use 8 addresses). Three above-mentioned memory space addresses overlap, for distinguishing and designing the order symbol of different data transmission in the instruction system of 8051: CPU visit slice, ROM order spend MOVC , visit block RAM order uses MOVX outside the slice, RAM order uses MOV to visit in slice.8051 one-chip computer have four 8 walk abreast I/O port, call P0, P1, P2 and P3. Each port is 8 accurate two-way mouths, accounts for 32 pins altogether. Every one I/O line can be used as introduction and exported independently. Each port includes a latch (namely special function register ), one exports the driver and a introduction buffer . Make data can latch when outputting, data can buffer when making introduction , but four function of passway these self-same. Expand among the system of memory outside having slice, four port these may serve as accurate two-way mouth of I/O in common use. Expand among the system of memory outside having slice, P2 mouth see high 8 address off; P0 mouth is a two-way bus, send the introduction of 8 low addresses and data / export in timesharingThe circuit of 8051 one-chip computers and four I/O ports is very ingenious in design. Familiar with I/O port logical circuit, not only help to use ports correctly and rationally, and will inspire to designing the peripheral logical circuit of one-chip computer to some extent. Load ability and interface of port have certain requirement, because output grade, P0 of mouth and P1 end output, P3 of mouth grade different at structure, so, the load ability and interface of its door demand to have nothing in common with each other. P0 mouth is different from other mouths, its output grade draws the resistance supremly. When using it as the mouth in common use to use, output grade is it leak circuit to turn on, is it is it urge NMOS draw the resistance on taking to be outer with it while inputting togo out to fail. When being used as introduction, should write "1" to a latch first. Every one with P0 mouth can drive 8 Model LS TTL load to export. P1 mouth is an accurate two-way mouth too, used as I/O in common use. Different from P0 mouth output of circuit its, draw load resistance link with power on inside have. In fact, the resistance is that two effects are in charge of FET and together: One FET is in charge of load, its resistance is regular. Another one can is it lead to work with close at two state, make its President resistance value change approximate 0 or group value heavy two situation very. When it is 0 that the resistance is approximate , can draw the pin to the high level fast ; When resistance value is very large, P1 mouth, in order to hinder the introduction state high. Output as P1 mouth high electricity at ordinary times, can is it draw electric current load to offer outwards, draw the resistance on needn't answer and thenning. Here when the port is used as introduction, must write into 1 to the corresponding latch first too, make FET end. Relatively about 20,000 ohms because of the load resistance in scene and because 40,000 ohms, will not exert an influence on the data that are input. The structure of P2 some mouth is similar to P0 mouth, there are MUX switches. Is it similar to mouth partly to urge, but mouth large a conversion controls some than P1. P3 mouth one multi-functional port, mouth getting many than P1 it have "and " 3 door and 4 buffer". Two part these, make her besides accurate two-way function with P1 mouth just, can also use the second function of every pin, "and " door 3 function one switch in fact, it determines to be to output data of latch to output second signal of function. Act as W =At 1 o'clock, output Q end signal; Act as Q =At 1 o'clock, can output W line signal . At the time of programming, it is that the first function is still the second function but needn't have software that set up P3 mouth in advance . It hardware not inside is the automatic to have two function outputted when CPU carries on SFR and seeks the location (the location or the byte ) to visit to P3 mouth /at not lasting lining, there are inside hardware latch Qs =1.The operation principle of P3 mouth is similar to P1 mouth.Output grade , P3 of mouth , P1 of P1 , connect with inside have load resistance of drawing , every one of they can drive 4 Model LS TTL load to output. As while inputting the mouth, any TTL or NMOS circuit can drive P1 of 8051 one-chip computers as P3 mouth in a normal way . Because draw resistance on output grade of them have, can open a way collector too or drain-source resistance is it urge to open a way, do not need to have the resistance of drawing outerly . Mouths are all accurate two-way mouths too. When the conduct is input, must write the corresponding port latch with 1 first . As to 80C51 one-chip computer, port can only offer milliampere of output electric currents, is it output mouth go when urging one ordinary basing of transistor to regard as, should contact a resistance among the port and transistor base , in order to the electricity while restraining the high level from exporting P1~P3 Being restored to the throne is the operation of initializing of an one-chip computer. Its main function is to turn PC into 0000H initially , make the one-chip computer begin to hold the conduct procedure from unit 0000H. Except that the ones that enter the system are initialized normally,as because procedure operate it make mistakes or operate there aren't mistake, in order to extricate oneself from a predicament , need to be pressed and restored to the throne the key restarting too. It is an input end which is restored to the throne the signal in 8051 China RST pin. Restore to the throne signal high level effective , should sustain 24 shake cycle (namely 2 machine cycles ) the above its effective times. If 6 of frequency of utilization brilliant to shake, restore to the throne signal duration should exceed 4 delicate to finish restoring to the throne and operating. Produce the logic picture of circuit which is restored to the throne the signal:Restore to the throne the circuit and include two parts outside in the chip entirely. Outside that circuit produce to restore to the throne signal (RST ) hand over to Schmitt's trigger, restore to the throne circuit sample to output , Schmitt of trigger constantly in each S5P2 , machine of cycle in having onemore , then just got and restored to the throne and operated the necessary signal insidly. Restore to the throne resistance of circuit generally, electric capacity parameter suitable for 6 brilliant to shake, can is it restore to the throne signal high level duration greater than 2 machine cycles to guarantee. Being restored to the throne in the circuit is simple, its function is very important. Pieces of one-chip computer system could normal running,should first check it can restore to the throne not succeeding. Checking and can pop one's head and monitor the pin with the oscillograph tentatively, push and is restored to the throne the key, the wave form that observes and has enough range is exported (instantaneous), can also through is it restore to the throne circuit group holding value carry on the experiment to change.MCS -51系列单片机的功能和结构MCS - 51系列单片机具有一个单芯片电脑的结构和功能，它是英特尔公司生产的系列产品的名称。
自动化相关外文文献原文及译文资料
Application, Design, and Manufacturing of Conical Involute Gears for Power TransmissionsDr. J. Börner,K. Humm,Dr. F. Joachim,Dr. H. Yakaria,ZF Friedrichshafen AG , 88038Friedrichshafen, Germany；[ABSTRACT] Conical involute gears (beveloids) are used in transmissions with intersecting or skew axes and for backlash-free transmissions with parallel axes. Conical gears are spur or helical gears with variable addendum modification (tooth thickness) across the face width. The geometry of such gears is generally known, but applications in power transmissions are more or less exceptional. ZF has implemented beveloid gear sets in various applications: 4WD gear units for passenger cars, marine transmissions (mostly used in yachts), gear boxes for robotics, and industrial drives. The module of these beveloids varies between 0.7 mm and 8 mm in size, and the crossed axes angle varies between 0°and 25°. These boundary conditions require a deep understanding of the design, manufacturing, and quality assurance of beveloid gears. Flank modifications, which are necessary for achieving a high load capacity and a low noise emission in the conical gears, can be produced with the continuous generation grinding process. In order to reduce the manufacturing costs, the machine settings as well as the flank deviations caused by the grinding process can be calculated in the design phase using a manufacturing simulation. This presentation gives an overview of the development of conical gears for power transmissions: Basic geometry, design of macro and micro geometry, simulation, manufacturing, gear measurement, and testing.1IntroductionIn transmissions with shafts that are not arranged parallel to the axis, torque transmission ispossible by means of various designs such as bevel or crown gears , universal shafts , or conical involute gears (beveloids). The use of conical involute gears is particularly ideal for small shaft angles (less than 15°), as they offer benefits with regard to ease of production, design features, and overall input. Conical involute gears can be used in transmissions with intersecting or skew axes or in transmissions with parallelaxes for backlash-free operation. Due to the fact that selection of the cone angle does not depend on the crossed axes angle, pairing is also possible with cylindrical gears. As beveloids can be produced as external and internal gears, a whole matrix of pairing options results and the designer is provided with a high degree of flexibility;Table 1.Conical gears are spur orhelical gears with variableaddendum correction (tooththickness)across the face width. Theycan mesh with all gears made witha tool with the same basic rack.The geometry of beveloids isgenerally known, but they have sofar rarely been used in powertransmissions. Neither the load capacity nor the noise behavior of beveloids has been examined to any great extent inthe past. Standards (such as ISO6336 for cylindrical gears ),calculation methods, and strengthvalues are not available. Therefore,it was necessary to develop thecalculation method, obtain theload capacity values, and calculatespecifications for production andquality assurance. In the last 15years, ZF has developed variousapplications with conical gears:® Marine transmissions with down-angle output shafts /1, 3/, Fig. 1® Steering transmissions /1/®Low-backlashplanetary gears (crossed axes angle 1…3°) for robots /2/® Transfer gears for commercial vehicles (dumper)®Automatic cartransmissions for AWD /4/, Fig. 22 GEAR GEOMETRY 2.1 MACRO GEOMETRYTo put it simply, a beveloid is a spur gear with continuously changing addendum modification across the face width, as shown in Fig. 3. To accomplish this, the tool is tilted towards the gear axis by the root cone angle ? /1/. This results in the basic gear dimensions:Helix angle, right/lefttanβLR ,=tan β·cos δβδασcos sin tan •n (1)Transverse pressure angle right/leftδββδαα•±•=tan cos cos tan tan ,no L tR(2)Base circle diameter right/leftLR LtR n L dR Zim d ,,,cos cos βα=(3)The differing base circlesfor the left and right flanks lead toasymmetrical tooth profiles at helicalgears, Fig. 3. Manufacturing with arack-type cutter results in a tooth rootcone with root cone angle δ. Theaddendum angle is designed so thattip edge interferences with the matinggear are avoided and a maximally large contact ratio is obtained. Thus, a differing tooth height results across the face width.Due to the geometric design limits for undercut andtip formation, the possible facewidth decreases as the cone angleincreases. Sufficientlywell-proportioned gearing is possibleup to a cone angle of approx. 15°.2.2MICRO GEOMETRYThe pairing of two conical gearsgenerally leads to a point-shaped toothcontact. Out-side this contact, there isgaping between the tooth flanks , Fig. 7.The goal of the gearing correctiondesign is to reduce this gaping inorder to create a flat and uniformcontact. An exact calculation of thetooth flank is possible with thestep-by-step application of thegearing law /5/, Fig. 4. To that end , apoint (P) with the radiusrP1and1normal vectorn1is generated on the original flank. This generates the speed vectorV 1P with⎪⎭⎪⎬⎫⎪⎩⎪⎨⎧'*'*•='0cos sin 1111γγωP P P r r v (4)For the point created on the mating flank, the radial vector rp 2:12P P r a r -= (5) and the speed vector 2PV '' apply ⎪⎭⎪⎬⎫⎪⎩⎪⎨⎧'*'*•=''0cos sin 212122γγωP P Pr r V (6) The angular velocities are generated from the gear ratio:1221z z-=ωω (7)The angle γ is iterated until the gearing law in the form()0121=-⨯P P v v n (8)is fulfilled. The meshing point Pa found is then rotated through the angle 2φ2112z z •-=φφ (9) around the gear axis, and this results in the conjugate flank point P 2.3 GEARING DESIGN3.1 UNDERCUT AND TIP FORMA TIONThe usable face width on the beveloid gearing is limited by tip formation on the heel and undercut on the toe as shown in Fig. 3. The greater the selected tooth height (in order to obtain a larger addendum modification), the smaller the theoretically useable face width is. Undercut on the toe and tip formation on the heel result from changing the addendum modification along the face width. The maximum usable face width isachieved when the cone angle onboth gears of the pairing isselected to be approximately thesame size. With pairs having asignificantly smaller pinion, asmaller cone angle must be usedon this pinion. Tip formation onthe heel is less critical if the tipcone angle is smaller than theroot cone angle, which oftenprovides good use of theavailable involute on the toe andfor sufficient tip clearance in theheel.3.2FIELD OF ACTIONAND SLIDING VELOCITYThe field of action for thebeveloid gearing is distorted bythe radial conicity with atendency towards the shape of aparallelogram. In addition, thefield of action is twisted due to the working pressure angle change across the face width. Fig. 5 shows an example of this. There is a roll axis on the beveloid gearing with crossed axes; there is no sliding on this axis as there is on the roll point of cylindrical gear pairs. With a skewed axis arrangement, there is always yet another axial slide in the tooth engagement. Due to the working pressure angle that changes across the face width, there is varying distribution of the contact path to the tip and root contact. Thus, significantly differing sliding velocities can result on the tooth tip and the tooth root along the face width. In the center section, the selection of the addendum modification should be based on thespecifications for the cylindrical gear pairs; the root contact path at the driver should be smaller than the tip contact path. Fig. 6 shows the distribution of the sliding velocity on the driver of a beveloid gear pair.4CONTACT ANAL YSIS AND MODIFYCATIONS4.1POINT CONTACT AND EASE-OFFAt the uncorrected gearing, there is only one point in contact due to the tilting of the axes. The gaping that results along the potential contact line can be approximately described by helix crowning and flank line angle deviation. Crossed axes result in no difference between the gaps on the left and right flanks on spur gears. With helical gearing, the resulting gaping is almost equivalent when both beveloid gears show approximately the same cone angle. The difference between the gap values on the left and right flanks increases as the difference between the cone angles increases and as the helix angle increases. This process results in larger gap values on the flank with the smaller working pressure angle. Fig.7 shows the resulting gaping (ease-off) for a beveloid gear pair with crossed axes and beveloid gears with an identical cone angle. Fig.8 shows the differences in the gaping that results for the left and right flanks for the same crossed axes angle of 10°and a helical angle of approx. 30°. The mean gaping obtained from both flanks is, to a large extent, independent of the helix angle and the distribution of the cone angle to both gears.The selection of the helical and cone angles only determines the distribution of the mean gaping to the left and right flanks. A skewed axis arrangement results in additional influence on the contact gaping. There is a significant reduction in the effective helix crowning on one flank. If the axis perpendicular is identical to the total of the base radii and the difference in the base helix angle is equivalent to the (projected) crossed axes angle, then the gaping decreases to zero and line contact appears. However, significant gaping remains on the opposite flank. If the axis perpendicular is further enlarged up to the point at which a cylindrical crossed helical gear pair is obtained, this results in equivalent minor helix crowning in the ease-off on both flanks. In addition to helix crowning, a notable profile twist (see Fig. 8) is also characteristic of the ease-off of helical beveloids. This profile twist grows significantly as the helix angle increases.Fig.9 shows how the profile twist on the example gear set from Fig.7 is changed depending on the helix angle. In order to compensate for the existing gaping in the tooth engagement, topological flank corrections are necessary; these corrections greatly compensate for the effective helix crowning as well as the profile twist. Without the compensation of the profile twist, only a diagonally patterned contact strip is obtained in the field of action, as shown in Fig. 10.4.2FLANK MODIFICATIONSFor a given degree ofcompensation, the necessarytopography can be determined fromthe existing ease-off. Fig. 11 shows these types of typographies, which were produced on prototypes. The contact ratios have improved greatly with these corrections as can be seen in Fig.12. For use in series production, the target is always to manufacture such topographies on commonly used grinding machines. The options for this are described in Section 6. In addition to the gaping compensation, tip relief is also beneficial. This relief reduces the load at the startand at the end of meshing and can also provide lower noise excitation. However, tip relief manufactured at beveloid gears is not constant in amount and length across the face width. The problem primarily occurs on gearing with a large root cone angle and atip cone angle deviating from thisangle. The tip relief at the toe issignificantly larger than that at the heel.This uneven tip relief must be acceptedif relief of the start and end of meshingis required. The production of tip reliefusing another cone angle as the rootcone angle is possible; however, thisrequires an additional grinding steponly for the tip relief. Independently ofthe generating grinding process,targeted flank topography can bemanufactured by coroning or honing;the application of this method onbeveloids, however, is still in the earlystages of development.5LOAD CAPACITY AND NOISEEXCITATION5. 1APPLICATION OF THECALCULATION STANDARDSThe flank and root load capacity ofbeveloid gearing can onlyapproximately be deter-mined usingthe calculation standards (ISO6336,DIN3990,AGMA C95) for cylindricalgearing. A substitute cylindrical gearpair has to be used, whichis defined by the gearparameters at the centerof the face width. Theprofile of the beveloidtooth is asymmetrical;that can, however, beignored on the substitutegears. The substitutecenter distance isobtained by adding up the operating pitch radii at the center of the face width.When viewed across the face width, individual parameters will change, which significantly influence the load capacity. Table 2 shows the main influences on the root and flank load capacities. The larger notch effect due to the decrease in the tooth root fillet radius towards the heel is in opposition to the increase in the root thickness. In addition, there is a smaller tangential force on the larger operating pitch circle at the heel; at the same time, however, the addendum modification on the heel is smaller. The primary influences are nearly well-balanced so that the load capacity can be calculated sufficiently approximate with the substitute gear pair. The load distribution acrossthe face width can be considered with the width factors (e. g. KβH and KβFinDIN/ISO) and should be determined from additional load pattern analyses.5.2USE OF THE TOOTH CONTACT ANAL YSISA more precise calculation of the load capacity is possible with athree-dimensional tooth contact analysis, as used at cylindrical gear pairs. The substitute cylindrical gear pair can be used in this analysis and the contact conditions are considered very well with flank topography. This topography is obtained from thesuperimposition of the load-freecontact ease-off with the flankcorrections used on the gear. Inthis process, the contact lines aredetermined on the substitutecylindrical gear and they differslightly from the contact at thebeveloid gear. Fig. 13 shows theload distributions calculated inthis manner as compared to theload patterns recorded, and a very goodcorrelation can be seen.This tooth contact analysis also generates the transmission error resulting from the tooth mesh as vibrational excitation. It can, however, only be used as a rough guide. The impreciseness in the contact behavior calculated has a stronger effect on the transmissionerror than it does on the load distribution.5.3EXACT MODELING USING THE FINITE-ELEMENT METHODThe stress at the beveloid gearscan also be calculated using thefinite-element method. Fig. 14shows examples of the modelingof the transverse section on thegears. Fig. 15 shows thecomputer-generated model in thetooth mesh section and the stressdistribution calculated withPERMAS /7/ on the driven gear in a mesh position. The calculation was carried out for multiple mesh positions and the transmission error can be determined from the rotation of the gears.5.4TESTS REGARDING LOAD CAPACITY AND NOISEA back-to-back test bench with crossed axes, upon which gear pairs from AWD transmissions were tested, was used to determine the load capacity, Fig.16. Different corrections were produced on the test gears in order to ascertain their influence on the load capacity. There was good correlation between the load capacity in the test and the FE (finite element) results. Particularly noteworthy is an additional shift of the load pattern towards the heel due to the increased stiffness in this area. This shift is not discernable in the calculation with the substitute cylindrical gear pair. Simultaneous to the load capacity tests, measurements of the transmission error and rotational acceleration were conducted in a universal noise test box, Fig. 17. In addition to the load influence, the influence of additional axis tilt on the noise excitation was also examined in these tests. With regard to this axis tilt, no large amount of sensitivity in the tested gear sets was found.6MANUFACTURING SIMULATIONWith the assistance of the manufacturingsimulation, machine settings and movements withcontinuous generation grinding as well as theproduced profile twist can be obtained. Production-constrained profile twist can be considered as early as the design phase of a transmission and can be incorporated into the load capacity and noise analyses. Simulation software for the manufacturing of beveloids was specially developed at ZF, which is comparable to /9/.6.1PRODUCTION METHODSTHAT CAN BE USED FORBEVELOIDSOnly generating methods canbe used to produce the beveloidgearing, because the shape of thetooth profile changes significantlyalong the face width. Only veryslightly conical beveloids can be manufactured with the acknowledgment that there is profile angle deviation even with the shaping process. Hobs are the easiest to use for pre-cutting. Gear planning would theoretically be useable as well; however, the kinematics required makes this not really feasible on existing machines. Internal conical gears can then only be precisely manufactured with pinion-type cutters if the cutter axis is parallel to the tool axis and the cone is created by changing the center distance. If the internal gear is manufactured with a tilted pinion cutter axis such as used for crown gears, this results in a hollow crowning and a profile twist without corrective movements. These deviations are small enough to be ignored for minor cone angles. For final processing, continuous generation grinding with a grinding worm appears to be the best option. If the workpiece or tool fixture can be additionally tilted，then partial generation methods are also applicable. Processing in a topological grinding process is also possible (e.g. 5-axis machines), but with great effort, when the cone angle of the gearing can be considered in the machine control. In principle, honing and coroning can also be used for the processing; however, the application of these methods in beveloids still needs extensive development. The targeted hollow crowning can be created in the generation grinding process in the dual-flank grinding process via a bowshaped reduction in the center distance. Thismethod results in a profile twist, that is the reverse of the profile twist from the contact gaping. Thus, this method provides extensive compensation for the profile twist and a significantly more voluminous load pattern as is typical on cylindrical gears.6.2WORKPIECE GEOMETRYThe following workpiece descriptions are used in the simulation:® initial gear (with stock allowance for the grind processing)® ideal gear (from the gear data, without flank corrections)® finished gear (with production-constrained deviations and flank corrections).动力传动圆锥渐开线齿轮的设计、制造和应用Dr. J. Börner,K. Humm,Dr. F. Joachim,Dr. H. akaria,ZF Friedrichshafen AG , 88038Friedrichshafen, Germany；摘要：圆锥渐开线齿轮(斜面体齿轮)被用于交叉或倾斜轴变速器和平行轴自由侧隙变速器中。
机械设计制造及自动化中英文对照外文翻译文献
中英文对照外文翻译文献(文档含英文原文和中文翻译)使用CBN砂轮对螺杆转子进行精密磨削的方法摘要：针对高精度加工螺杆转子，这篇论文介绍了利用立方氮化硼（CBN砂轮）对螺杆转子进行精密磨削的加工方法。
首先，使用小型电镀CBN砂轮磨削螺杆转子。
精确的CBN砂轮轴向轮廓的模型是在齿轮啮合理论的基础上建立开发的。
考虑到螺杆转子和涂层厚度之间的间隙，主动砂轮的修整引入了CBN的砂轮的设计方法。
主动砂轮的形状采用低速电火花线切割技术（低速走丝线切割机）进行加工线CBN主动砂轮的成形车刀采用低速走丝机切割机进行加工。
CBN螺杆转子砂轮采用本文提出的原理进行有效性和正确性的验证。
电镀CBN砂轮对螺杆转子进行加工，同时进行机械加工实验。
在实验中获得的数据达到GB10095-88五级认证。
关键词： CBN砂轮精密磨削螺杆转子砂轮外形修整专业术语目录：P 螺杆转子的参数H 螺杆转子的直径Σ砂轮和转子的安装角度Au 砂轮和转子的中心距8 螺旋转子接触点的旋转角x1, y1, z1:转子在σ系统中的位置x, y, z: 砂轮端面的位置x u ,y u ,z u: x, x y z轴的法向量n x ,ny,nz:X Y Z轴的端面法向量n u , nu, nu:砂轮的角速度的矢量:砂轮模块的角速度wu:螺旋转子的角速度w1螺旋转子模块的角速度转子接触点的角速度转子表面接触点的初始速度砂轮表面接触点的角速度砂轮表面接触点的初始速度l砂轮的理论半径砂轮轴的理想位置砂轮表面的修改半径砂轮轴的修改位置砂轮表面的法向量1.引言螺旋转子是螺杆压缩机、螺钉、碎纸机以及螺杆泵的关键部分。
转子的加工精度决定了机械性能。
一般来说，铣刀用于加工螺旋转子。
许多研究者，如肖等人[ 1 ]和姚等人[ 2 ]，对用铣刀加工螺旋转子做了大量的工作。
该方法可以提高加工效率。
然而，加工精度低和表面粗糙度不高是其主要缺点。
随着高新技术的发展，一些新的加工技术被用来制造螺旋转子。
机械设计制造及其自动化毕业论文中英文资料外文翻译
机械设计创造及其自动化毕业论文外文文献翻译INTEGRATION OF MACHINERY译文题目专业机械设计创造及其自动化外文资料翻译INTEGRATION OF MACHINERY（From ELECTRICAL AND MACHINERY INDUSTRY）ABSTRACTMachinery was the modern science and technology development inevitable result, this article has summarized the integration of machinery technology basic outline and the development background .Summarized the domestic and foreign integration of machinery technology present situation, has analyzed the integration of machinery technology trend of development.Key word： integration of machinery ，technology， present situation ，product t，echnique of manufacture ，trend of development0. Introduction modern science and technology unceasing development, impelled different discipline intersecting enormously with the seepage, has caused the project domain technological revolution and the transformation .In mechanical engineering domain, because the microelectronic technology and the computer technology rapid development and forms to the mechanical industry seepage the integration of machinery, caused the mechanical industry the technical structure, the product organization, the function and the constitution, the production method and the management systemof by machinery for the characteristic integration ofdevelopment phase.1. Integration of machinery outline integration of machinery is refers in the organization new owner function, the power function, in the information processing function and the control function introduces the electronic technology, unifies the system the mechanism and the computerization design and the software which constitutes always to call. The integration of machinery development also has become one to have until now own system new discipline, not only develops along with the science and technology, but also entrusts with the new content .But its basic characteristic may summarize is: The integration of machinery is embarks from the system viewpoint, synthesis community technologies and so on utilization mechanical technology, microelectronic technology, automatic control technology, computer technology, information technology, sensing observation and control technology, electric power electronic technology, connection technology, information conversion technology as well as software programming technology, according to the system function goal and the optimized organization goal, reasonable disposition and the layout various functions unit, in multi-purpose, high grade, redundant reliable, in the low energy consumption significance realize the specific function value, and causes the overall system optimization the systems engineering technology .From this produces functional system, then becomes an integration of machinery systematic or the integration of machinery product. Therefore, of coveringtechnology is based on the above community technology organic fusion one kind of comprehensive technology, but is not mechanical technical, the microelectronic technology as well as other new technical simple combination, pieces together .This is the integration of machinery and the machinery adds the machinery electrification which the electricity forms in the concept basic difference .The mechanical engineering technology has the merely technical to develop the machinery electrification, still was the traditional machinery, its main function still was replaces with the enlargement physical strength .But after develops the integration of machinery, micro electron installment besides may substitute for certain mechanical parts the original function, but also can entrust with many new functions,like the automatic detection, the automatic reduction information, demonstrate the record, the automatic control and the control automatic diagnosis and the protection automatically and so on .Not only namely the integration of machinery product is human's hand and body extending, human's sense organ and the brains look, has the intellectualized characteristic is the integration of machinery and the machinery electrification distinguishes in the function essence.2. Integration of machinery development condition integration of machinery development may divide into 3 stages roughly.20th century 60's before for the first stage, this stage is called the initial stage .In this time, the people determination not on own initiative uses the electronic technology the preliminary achievement to consummate the mechanical product the performance .Specially in Second World War period, the war has stimulated the mechanical product and the electronic technology union, these mechanical and electrical union military technology, postwar transfers civilly, to postwar economical restoration positive function .Developed and the development at that time generally speaking also is at the spontaneouscondition .Because at that time the electronic technology development not yet achieved certain level, mechanical technical and electronic technology union also not impossible widespread and thorough development, already developed the product was also unable to promote massively. The 20th century 70~80 ages for the second stage, may be called the vigorous development stage .This time, the computer technology, the control technology, the communication development, has laid the technology base for the integration of machinery development . Large-scale, ultra large scale integrated circuit and microcomputer swift and violent development, has provided the full material base for the integration of machinery development .This time characteristic is :①A mechatronics word first generally is accepted in Japan, probably obtains the quite widespread acknowledgment to 1980s last stages in the worldwide scale ;②The integration of machinery technology and the product obtained the enormous development ;③The various countries start to the integration of machinery technology and the product give the very big attention and the support. 1990s later periods, started the integration of machinery technology the new stagewhich makes great strides forward to the intellectualized direction, the integration of machinery enters the thorough development time .At the same time, optics, the communication and so on entered the integration of machinery, processes the technology also zhan to appear tiny in the integration of machinery the foot, appeared the light integration of machinery and the micro integration of machinery and so on the new branch; On the other hand to the integration of machinery system modeling design, the analysis and the integrated method, the integration of machinery discipline system and the trend of development has all conducted the thorough research .At the same time, because the hugeprogress which domains and so on artificial intelligence technology, neural network technology and optical fiber technology obtain, opened the development vast world for the integration of machinery technology .These research, will urge the integration of machinery further to establish the integrity the foundation and forms the integrity gradually the scientific system. Our country is only then starts from the beginning of 1980s in this aspect to study with the application .The State Councilsummary had considered fully on international the influence which and possibly brought from this about the integration of machinery technology developmenttrend .Many universities, colleges and institutes, the development facility and some large and middle scale enterprises have done the massive work to this technical development and the application, does not yield certain result, but and so on the advanced countries compared with Japan still has the suitable disparity.3. Integration of machinery trend of development integrations of machinery are the collection machinery, the electron, optics, the control, the computer, the information and so on the multi-disciplinary overlapping syntheses, its development and the progress rely on and promote the correlation technology development and the progress .Therefore, the integration of machinery main development direction is as follows:3.1 Intellectualized intellectualizations are 21st century integration of machinery technological development important development directions .Theartificial intelligence obtains day by day in the integration of machinery constructor's research takes, the robot and the numerical control engine bedis to the machine behavior description, is in the control theory foundation, the absorption artificial intelligence, the operations research, the computer science, the fuzzy mathematics, the psychology, the physiology and the chaos dynamics and so on the new thought, the new method, simulate the human intelligence, enable it to have abilities and so on judgment inference, logical thinking, independent decision-making, obtains the higher control goal in order to .Indeed, enable the integration of machinery product to have with the human identical intelligence, is not impossible, also is nonessential .But, the high performance, the high speed microprocessor enable the integration of machinery product to have preliminary intelligent or human's partial intelligences, then is completely possible and essential.In the modern manufacture process, the information has become the control manufacture industry the determining factor, moreover is the most active actuation factor .Enhances the manufacture system information-handling capacity to become the modern manufacture science development a key point .As a result of the manufacture system information organization and structure multi-level, makes the information the gain, the integration and the fusion presents draws up the character, information measure multi-dimensional, as well as information organization's multi-level .In the manufacture information structural model, manufacture information uniform restraint, dissemination processing and magnanimous data aspects and so on manufacture knowledge library management, all also wait for further break through.Each kind of artificial intelligence tool and the computation intelligence method promoted the manufacture intelligence development in the manufacture widespread application .A kind based on the biological evolution algorithm computation intelligent agent, in includes thescheduling problem in the combination optimization solution area of technology, receives the more and more universal attention, hopefully completes the combination optimization question when the manufacture the solution speed and the solution precision aspect breaks through the question scale in pairs the restriction .The manufacture intelligence also displays in: The intelligent dispatch, the intelligent design, the intelligent processing, the robot study, the intelligent control, the intelligent craft plan, the intelligent diagnosis and so on are various These question key breakthrough, may form the product innovation the basic research system. Between 2 modern mechanical engineering front science different science overlapping fusion will have the new science accumulation, the economical development and society's progress has had the new request and the expectation to the science and technology, thus will form the front science .The front science also has solved and between the solution scientific question border area .The front science has the obvious time domain, the domain and the dynamic characteristic .The project front science distinguished in the general basic science important characteristic is it has covered the key science and technology question which the project actual appeared.Manufacture system is a complex large-scale system, for satisfies the manufacture system agility, the fast response and fast reorganization ability, must profit from the information science, the life sciences and the social sciences and so on the multi-disciplinary research results, the exploration manufacture system new architecture, the manufacture pattern and the manufacture system effective operational mechanism .Makes the system optimization the organizational structure and the good movement condition is makes the system modeling , the simulation and the optimized essential target .Not only the manufacture system new architecture to makes the enterprise the agility and may reorganize ability to the demand response ability to have the vital significance, moreover to made the enterprise first floor production equipment the flexibility and may dynamic reorganization ability set a higher request .The biological manufacture view more and more many is introduced the manufacture system, satisfies the manufacture system new request.The study organizes and circulates method and technique of complicated system from the biological phenomenon, is a valid exit which will solve many hard nut to cracks that manufacturing industry face from now on currently .Imitating to living what manufacturing point is mimicry living creature organ of from the organization, from match more, from growth with from evolution etc. function structure and circulate mode of a kind of manufacturing system and manufacturing process.The manufacturing drives in the mechanism under, continuously by one's own perfect raise on organizing structure and circulating mode and thus to adapt the process of[with] ability for the environment .For from descend but the last product proceed together a design and make a craft rules the auto of the distance born, produce system of dynamic state reorganization and product and manufacturing the system tend automatically excellent provided theories foundation and carry out acondition .Imitate to living a manufacturing to belong to manufacturing science and life science of"the far good luck is miscellaneous to hand over", it will produce to the manufacturing industry for 21 centuries huge of influence .机电一体化摘要机电一体化是现代科学技术发展的必然结果,本文简述了机电一体化技术的基本概要和发展背景。
自动化专业英语论文
自动化专业英语论文Title: Application of Automation in the Manufacturing IndustryIntroduction:Automation has become an integral part of the manufacturing industry, revolutionizing production processes and enhancing efficiency. This paper aims to explore the application of automation in the manufacturing industry and its impact on productivity, quality, and cost reduction.1. Definition and Importance of Automation:1.1 Definition: Automation refers to the use of technology and machinery to perform tasks with minimal human intervention.1.2 Importance: Automation enables companies to streamline processes, reduce human error, increase productivity, and improve overall product quality.2. Automation Technologies in Manufacturing:2.1 Robotics: Industrial robots are widely used in manufacturing for tasks such as assembly, welding, and material handling. They offer precision, speed, and repeatability, leading to increased productivity and reduced labor costs.2.2 Computer Numerical Control (CNC): CNC machines automate the control of tools and machinery, improving accuracy and reducing human error in processes like milling, turning, and drilling.2.3 Programmable Logic Controllers (PLCs): PLCs are used to control and monitor manufacturing processes, ensuring efficient and reliable operation. They enable real-time data collection and analysis, facilitating process optimization.2.4 Internet of Things (IoT): IoT devices enable connectivity and data exchange between machines, allowing for remote monitoring, predictive maintenance, and real-time production control. This technology enhances efficiency and reduces downtime.3. Benefits of Automation in Manufacturing:3.1 Increased Productivity: Automation eliminates manual tasks, leading to higher production rates and reduced cycle times. It enables 24/7 operation, resulting in increased output and faster time-to-market.3.2 Improved Quality: Automation ensures consistent product quality by minimizing human error and variations. It enables precise control over manufacturing processes, reducing defects and rework.3.3 Cost Reduction: Automation reduces labor costs by replacing manual tasks with machines. It also optimizes resource utilization, minimizes waste, and lowers energy consumption, resulting in overall cost savings.3.4 Enhanced Safety: Automation eliminates the need for workers to perform hazardous tasks, reducing the risk of accidents and injuries. It creates a safer working environment for employees.4. Challenges and Considerations:4.1 Initial Investment: Implementing automation requires a significant upfront investment in technology, machinery, and training. Companies need to carefully evaluate the return on investment (ROI) and long-term benefits.4.2 Workforce Adaptation: Automation may lead to workforce displacement, requiring companies to provide retraining and upskilling opportunities for employees. Effective change management strategies are crucial for successful implementation.4.3 Cybersecurity: With increased connectivity, automation systems are vulnerable to cyber threats. Robust security measures, such as network segmentation and encryption, must be implemented to protect sensitive data and prevent unauthorized access.4.4 Maintenance and Support: Automation systems require regular maintenance and technical support. Companies should have a proactive maintenance plan in place to ensure uninterrupted operation and minimize downtime.5. Case Study: Implementation of Automation in XYZ Manufacturing Company:In this case study, XYZ Manufacturing Company successfully implemented automation in their production line. By integrating robotics and IoT technologies, they achieved a 30% increase in productivity, a 20% reduction in defects, and a 15% decrease in overall production costs. The company also enhanced employee safety by eliminating hazardous tasks through automation.Conclusion:Automation plays a vital role in the manufacturing industry, offering numerous benefits such as increased productivity, improved quality, cost reduction, and enhanced safety. However, companies should carefully consider the challenges and implement automation strategies that align with their specific needs and goals. By embracing automation, manufacturers can stay competitive in today's rapidly evolving market.。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
中英文资料外文翻译文献基于PLC的自动化制造系统15.梯形图逻辑函数主题：•数据处理、数学运算、数据转换、阵列操作、统计、比较、布尔量运算等函数•设计实例宗旨：•理解基本函数,允许计算和比较•了解使用了内存文件的数组函数15.1介绍梯行图逻辑输入触点和输出线圈之间允许简单的逻辑判断。
这些函数把基本的梯形图逻辑延伸到其他控制形式中。
例如，附加的定时器和计数器允许基于事件的控制。
在下图15.1中有一个较长的关于这些函数的表。
这包括了组合逻辑和事件函数。
本章将会研究数据处理和数值的逻辑。
下一章将介绍表、程序控制和一些输入和输出函数。
剩下的函数会在后面的章节中讨论图15.1 基本PLC函数分类大多数的函数会使用PLC的存储单元获取值、储存值和跟踪函数状态。
一般大部分函数当输入值是“真”时，会被激活。
但是，有些函数，如延时断开定时器，可以在无输入时，保持激活状态。
其它的函数仅当输入由“假”变“真”时，才会被执行，这就是所谓的上升沿触发。
想想，一计数器仅仅是输入由“假”变“真”时才会计数，输入为“真”状态的持续时间并不影响函数动作。
而下降沿触发函数仅当输入由“真”变“假”时才会触发。
多数函数并非边沿触发：除非有规定说明函数不是边沿触发。
15.2数据处理15.2.1传递函数有两种基本的传递函数；MOV(值,操作数) -把值传递到指定的存储位置。
MVM(值,标号,操作数) -把值传递到指定的存储位置，但是用标号来指定一个传递的位。
这个MOV函数从一个存储空间取出一个值放置到另外一个存储空间里。
下图15.2给出了MOV的基本用法。
当A为“真”，MOV函数把一个浮点数从原操作数传递到操作数存储位置。
原操作数地址中的数据没有改变。
当B为“真”时，原操作数中的浮点数将被转换成整数存储在操作数存储区中。
浮点数会被四舍五入成整数。
当C为“真”时，整数“123”将被存储在整数文件N7:23中。
MOV原操作数F8:07操作数F8:23MOV原操作数F8:07操作数N7:23MOV原操作数123操作数N7:23图15.2 MOV的基本用法下图15.3给出了更多更复杂的MOV函数用法。
当A为“真”时，第一个模块将会把值“123”送入N7:0，同时第二个模块将会把值“-9385”从N7:1 送到N7:2中（这个值之所以为负数，是因为我们使用了2S的compliment）。
对于基本的MOV函数使用中，二进制数值不是必要的；但是在MVM函数中，二进制数值却是必要的。
这个模块中从N7:3 移动二进制数值到N7:5中。
但是这些“位”在N7:4中仍为“ON”，操作数的其他位将不会受到影响。
请注意：N7:5的第一位N7:5/0在指令执行前后仍为“ON”,但是在N7:4中却不同，MVM 函数当应用在个别二进制位的处理中时非常有用，但是处理实数却是用处不大了。
MOV原操作数130dest N7:0MOV原操作数N7:1dest N7:2MVM原操作数N7:3标号N7:4dest N7:5MVM原操作数N7:3标号N7:4dest N7:6图15.3MOV和MVM函数的使用实例15.2.2数学函数数学函数将检索一个或多个值，执行一个操作然后把结果储存在内存中。
图15.4展示的是一个ADD函数从N7:4和F8:35中读取数据操，把他们转换成操作数的地址格式，把两个浮点数相加，结果储存在F8:36中。
该函数有两个原操作数记做“原操作数A”、“原操作数B”。
对于该函数来说原操作数顺序可以改变，但是这对于“减法函数”或“除法函数”等其他操作来说却不一定正确，下面列出了其他一些基本的数学函数。
其中的一些，如“取负”是一元的函数，也就是说它只有一个原操作数。
加原操作数A N7:04原操作数B F8:35操作数F8:36图15.4数学函数图15.5列出了数学函数的用法，多数函数的执行会给出我们期待的结果，第二个ADD函数从N7：3中取了一个值，加1然后送入原操作数，这就是通常所说的“自加”操作。
第一个DIV,执行操作整数25除以整数10，结果四舍五入为最接近的整数，这时，结果被储存在N7:6中。
NEG指令取走了新数“-10”，而不是源数据“0”，从N7:4取出的数据符号被取反，结果存入N7:7。
图15.5 数学函数例子函数、对数函数、取二次方根函数。
最后一个函数CPT能接受表达式并且可以执行一个复杂的运算。
图15.6 高级数学函数图15.7展示的是把表达式转化成梯形图逻辑。
转换的第一步是把表达式的变量存入PLC中没被使用过的存储区中。
接下来拥有很多嵌套运算的方程就可以被转化，例如LN函数。
这时LN函数的运算结果被保存在其他存储空间中，之后会被调用。
其它的一些操作会应用在相似的情况下。
（注意：这些方程可能应用在其他场合中，占用更少的存储空间。
）给定方程指定存储图15.7 用梯形图表示的方程和图15.7中一样的方程被应用于图15.8所示的CPT函数中。
存储区也和上图使用的一样。
该表达式被直接输进了PLC程序中。
图15.8 利用CPT函数计算数学函数可以导致诸如溢出，进位等状态标识位变化，注意要尽量避免出现像“溢出”这样的问题。
但是使用浮点数时这种问题会少一点。
而整数极易出现这样的问题，因为它们受到-32768—32767这样一个数据范围的限制。
15.2.3 转换函数梯形图中的转换函数列在了图15.9中。
例子中的函数将会从D存储区读取一个BCD码数据，然后把它转换为浮点数存储在F8:2中。
其它的函数将把二进制负数转换成BCD码数据，下面的函数也包含了弧度数和角度的转化。
图15.9 转换函数图15.10给出了转换函数的例子。
这些函数读取一个源数据后，开始转换，结束后储存结果。
TOD函数转换成BCD码将会出现“溢出”错误。
图15.10 转换例子15.2.4矩阵函数矩阵可以储存多列数据。
在PLC中这将是一系列的整数数字，浮点数或者其它类型的数据。
例如，假定我们测量和保存一块封装芯片的重量时要使用浮点数存储区F8:20。
每十分钟要读取一次重量数据，并且一小时后找出平均重量。
这一节我们将聚焦于矩阵中多组数据的处理技术，也就是说明书中所谓的“块”。
15.2.4.1-统计这些函数也是可以处理统计数据的。
图15.11列出了这些函数，当A变为“真”A VE函数的转换操作从存储区F8:0开始，并算出四个数的平均值。
控制字R6:1被用来跟踪运算的进程，并判断运算何时结束。
这些运算还有其它的一些是边沿触发的。
该次运算可能会需要经过多个扫描周期才能完成。
运算结束后，平均值被储存在F8:0中，同时R6:1/DN位被置ON。
如图15.12给出的统计函数例子，它拥有一个有四个字长从F8:0开始的数组数据。
每次执行平均值运算的结果储存在F8:4中，标准差储存在F8:5中。
一系列数值被存放在从F8:0到F8:3的按升序排列的存储区中。
为防止出现数据覆盖现象，每个函数都应该有自己的控制存储器。
同时触发该函数与其他运算不是一个明智的选择，因为在计算期间该函数会移动数据，这会导致错误的结果。
图15.12 统计运算15.2.4.2-块操作图15.13给出了最基本的块函数。
这个COP 函数将会拷贝从N7:50到N7:40拥有十个数据的数组。
FAL 函数将会通过一个表达式执行数学运算。
FSC 函数通过使用表达式允许数组之间进行比较。
FLL 函数会利用一个数据把块存储区填充起来。
图15.13块操作函数图15.14显示的是拥有不同地址模式的FAL函数使用例子。
第一个FAL函数将会执行下列运算：N7:5=N7:0+5, N7:6=N7:1+5, N7:7=N7:2+5, N8:7=N7:3+5, N7:9=N7:4+5.第二个FAL函数中在表达式值之前缺少“#”标识，因此运算将变为：N7:5=N7:0+5, N7:6=N7:0+5, N7:7=N7:0+5, N8:7=N7:0+5, N7:9=N7:0+5.当B为真，且为模式2时该指令在每次扫描周期到来时执行两个运算。
最后一个FAL运算的结果为：N7:5=N7:0+5, N7:5=N7:1+5,N7:5=N7:2+5, N7:5=N7:3+5, N7:5=N7:4+5.最后一个操作貌似没什么用处，但是请注意，该运算是增值的。
在C上升沿到来时该运算都会执行一次。
每次扫描周期经过时，这几个运算将执行所有的5个操作一次。
用来指示每次扫描运算的编号，而插入一个号码也是有可能的。
由于有较大的数组，运算时间可能会很长，同时尝试每次扫描时执行所有运算也将会导致看门狗超时错误。
图15.14 文本代数函数例子15.3 逻辑函数15.3.1 数值比较图15.15所示为比较函数，先前的函数块是输出，它取代了输入联系。
例子展示的是比较两个浮点数大小的函数EQU。
如果数值相当，则输出位B3:5/1为真，否则为假。
其他形式的相等函数也裂了出来。
图15.15比较函数图15.16展示了六个基本的比较函数。
图右边是比较函数的操作例子，图15.16比较函数例子图15.16中的梯形图程序在图15.17中又用CMP函数表达了一遍，该函数可以使用文本表达式。
图15.17使用CMP函数的等价表述表达式可以被用来做许多复杂运算，如图15.18所示。
表达式将会判断F8:1是否介于F8:0和F8:2之间。
图15.18一个更加复杂的比较函数LIM和MEQ函数如图15.19所示。
前三个函数将会判断待检测值是否处在范围内。
如果上限值大于下限值且待测值介于限值之间或者等于限值，那么输出为真。
如果下限值大于上限值，则只有待测值在范围之外时输出值才为真。
上限下限下限上限图15.20LIM函数的线段表示图15.20展示的线段可以帮助我们判断待测数值是否在限值内。
在图15.21中使用FSC指令进行文件与文件的比较也是被允许的。
该指令使用了控制字R6:0。
它将解释表达式10次，做两次比较在每次逻辑扫描中（模式2）。
比较为：F8:10<F8:0 , F8:11<F8:0 然后F8:12<F8:0 , F8:13<F8:0 然后F8:14<F8:0 , F8:15<F8:0 然后F8:16<F8:0 , F8:17<F8:0 然后是F8:18<F8:0 , F8:19<F8:0 。
函数将会继续执行除非发现一个错误状态或者完成比较。
如果比较完成没有发现错误状态那么输出A将为“真”。
在一个扫描周期中该模式也会一直执行所有比较。
或者当函数前面的输入为真时就更新增量---在这种情况下输入为一条线，而一直为真。
FSC控制字R6:0长度10位置0模式2表达式#F8:10<F8:0图15:21使用表达式的文件比较15.3.2布尔函数图15.22显示的是布尔代数函数。