KEY TECHNIQUES OF MULTI-BODY MODELING OF OCCUPANT RESTRAINT SYSTEM OF VEHICLE SIDE IMPACT
artillery_operation_experiment_platform_manual.pd
4th International Conference on Sensors, Mechatronics and Automation (ICSMA 2016)Design of Artillery Operational Experiment Platform Based on theInformation SystemJianli Zhang1,a，Zhongwei Guo1,b，Lijian Ji1,c，Qinghua Ni1,d1Army Officer Academy of PLA，Hefei，230031，Anhui，Chinaa****************b**************d******************** Keywords: Based on the information system, Artillery operation experiment platform, Design Abstract. Artillery operational experiment platform was designed from function and structure based on the information system. The functions of the platform is composed of five parts ,which are role set, Guide and control, Command and control, Evaluation and decision, Multi-level integrated experiment. The structure of the platform is composed of data and model library, battlefield environment subsystem, Artillery operational evaluation subsystem and the result subsystem. The working process of the platform was analyzed, which included Experimental environment construction phase, Scenario editing phase, Implementation phase and Experimental evaluation phase. The models of platform were built to support system running, which including system architecture model, multi-resolution simulation model, complex battlefield environment model, scenario generate model, operational data model, etc.IntroductionWith a long period of construction, Artillery had built batch laboratories of equipment technology, equipment argumentation and equipment operational evaluation, with high degree of information. But it also lacks of experimental platform. It is difficult to support large-scale experiment to meet the needs of the future operation; it also can’t meet the needs of Artillery operational experiment. Therefore, it is urgent to study of Artillery operational problems in laboratory environment, innovation and development Artillery operation theories, promote the formation of the Artillery operational capability based on information system.The overall design of Artillery operation experiment platform based on information system Function designThe platform provides operational scenario editor, experiment resource management, experiment environment, experimental guide control, the simulation operation support, the basic function such as operational effect evaluation of the experimental platform, to provide Artillery operational application experiment good usability, strong expansibility, build flexible system support. Its function mainly includes:(1) The role set function. According to the experiment content, scale, person, it can set different seats and role assignment on different objects.(2)Guide and control function. It includes the management and guidance control, monitoring, system control, system monitoring and display the basic function of battlefield situation.(3)Command and control function. Through the computer network communication and combining with the battlefield situation, we can joint planning scheme, research, set decision of the battle. So, it complete the command and control action of the battlefield.(4)Evaluation and decision function. It provides timely, accurate, comprehensive evaluation and award of the stage results of practice.(5)Multi-level integrated experiment function. We regard the Artillery group, camp, even the multi-level commanders as experimental object, according to the command system, we build the multi-layer experimental environment.Structure designThe general structure of Artillery operation experiment platform can be divided into four parts, data and model library, battlefield environment subsystem, Artillery operational evaluation subsystem and the result subsystem of the experiment. The logical relationship between various systems is shown in Fig. 1. All subsystems are supported by environment RTI, we can achieve connectivity, communication, interoperability, in order to meet operation experiment under the environment of the operation software platform. Operational experiment platform software logic structure is shown in Fig.2.Fig. 1 The logical relationship of Artillery operation experiment platform(1) Data and model libraryThis part is mainly collecting and processing data, making operation decision for the Artillery operation experimental, it provides data and the model service. It mainly provides Artillery operation experiment data processing and storage, model construction, model storage, data and model services,Fig. 2 software logical structure of Artillery operation experiment platform(2) Battlefield environment Simulation subsystemThe battlefield environment simulation is mainly used to simulate Artillery battlefield environment, including geographical information, electromagnetic environment, weather information, it provides experiment data for the platform. It mainly realizes simulation geographical environment, geographical data information; it Simulates electromagnetic environment, provides electromagnetic environment's influence on the communication data, and the simulation of the communication quality; it simulates meteorological environment, provides meteorological environment impact on the Artillery operation action data. It supports a variety of editing and management of data field.(3) Artillery operation subsystemThe Artillery operation subsystem was built, mainly to organize the implementation and process management for the Artillery operation experiment. The subsystem is closely combined with operational experiment characteristics and law rules, through using advanced technology to build experimental environment, to ensure the centralized management and orderly operation of the Artillery operational experiments based on the basis of the laboratory network system construction achievements. The main implementation are guide, operational scenarios generated, making operation command decision, operation simulation, the battlefield situation display; operational control.(4) Evaluation subsystemThis party is mainly used for the scheduled operations under the conditions of Artillery operations experiment data analysis and research, provides support to improve the operational capability. The main implementations are command and control effectiveness analysis, weapons and equipment efficiency analysis, fire damage effect analysis; battle command ability analysis.The workflow design of Artillery operational experiment platform based on the information systemThe working process of the Artillery operational experiment platform can be divided into four stages: the experiment environment to build, scenarios editing, experiment operation and the application effect evaluation.Experimental environment construction phaseIn accordance with the requirements for the experimental task decomposition, we can form experiment scheme. According to the experiment scheme requirements, we choose the appropriate software and hardware equipment, build the dynamic construction of experimental environment, when the existing resources cannot meet the requirement of the experiment, it needs to be developed or obtained from third parties, such as the lack of a weapon and equipment simulation model, we can develop the available resources from software platform.Scenario editing phaseThis phase mainly completes the scenario editor, preview and confirmation, update the weapon system of operation into basic data, to ensure the consistent with the simulation test environment. Implementation phaseIn the implementation phase, t according to the scenario editing, the battlefield situation produce module dynamically generates battlefield environment and military activities information, drives the operation of all kinds of simulation model, organizes blue confrontation simulation system which is composed of weapons and equipment simulation model and component against, and record test data. In the process of advance, red and blue operation system against independently, through the guide and control function, we can adjust situation of battlefield in real-time, complete closed loop experiment. Experimental evaluation phaseThis phase is mainly performed by evaluation module. In the process of experiment, it collects and records the real-time data and results. After finished the experiment, we must carry on the experiment data archiving. According to the specific assessment tasks (including weapons and equipment effectiveness evaluation, operational application scheme evaluation and etc.), we can extraction and analysis experimental data, playback and analysis the experimental process.The model design of Artillery operation experiment platform based on information system Architecture modelArtillery operation experiment platform can adopt HLA (high level architecture) runtime support system KD - RTI and MAK - RTI, uses the object-oriented thought to realize each function of RTI, itscomposition is shown in Fig.3, it is mainly composed of guide, object model development toolFig. 3 The support environment of Artillery operational experiment operationMulti-resolution simulation modelThe resolution of the operation simulation, which is to describe the detail between the real world and simulation object: the granularity. Usually it adopts fixed resolution model, such as the size of campaign usually is pre-determined army, division and regiment levels resolution, but that is not easy to obtain the local process simulation of further refinement, in some important season，commander hopes enlarge the Artillery group operation, which requires the action refinement to the Artillery battalion and battery unit level, here, we have to adopt variable resolution simulation.The key technology of multi-resolution modeling is how to keep the consistency between different resolution model, guarantees their mutual transformation seamless. When commander enlarge the Artillery group, it converts to the multi-resolution model, which the data and action resolution enlarge to the unit level, and other parts of the battlefield is still keep the original resolution, which requires the high-resolution and other parts of the original resolution under the condition, here also need a seamless restore to the original resolution under state of operation simulation, and the strategy is consistent. Complex electromagnetic environment modelThe battlefield electromagnetic environment is characterized by a certain battle space state of all kinds of electromagnetic signals. Electromagnetic environment radiation source can be divided artificial electromagnetic radiation source and natural electromagnetic radiation source. For artificial electromagnetic radiation includes deliberately radiation and no intention radiation. The research of battlefield electromagnetic environment is aimed at man-made electromagnetic information useful and targeted electromagnetic interference. In order to build and set out distinct, reliable battlefield electromagnetic environment, to adapt the complex electromagnetic environment of operation and training, it needs to build the correct battlefield electromagnetic model. The overall framework of the electromagnetic environment simulation model is shown in Fig.4. The main models are: signal model, the antenna model, simulation model of signal propagation and the corresponding algorithms library.Fig. 4 The overall framework of electromagnetic environment simulation model(1) Signal model. In order to build real battlefield electromagnetic environment, source network system must be considered. It mainly includes the communication network and radar net.(2) Antenna model. According to the scanning pattern build antenna model.(3)Signal propagation model. With the aid of this kind of model, we can quantify and analysis the electromagnetic wave in the air.(4) Simulation algorithms library. It mainly includes coordinate transform, signal generation, signal processing, data processing and other basic math functions.Scenario generation modelAt the beginning of the operational experiments, we need a basic operational experiment condition, the initial conditions generally given by operational scenario data, it determines the basic conditions and the corresponding constraints of the operational experiments, including the simulation of the operational entity and the environment, the basic attributes of each entity, the entity dynamic properties determine the system state, and the use of plans, rules, agreed to limit the simulation process and constraints. To simplify the experiment content, determines the scope and process of the operational experiment, gives the basic background and premise condition, making operational experiment aim and object, setting simulation boundary conditions and constraints, are done through operational scenarios.Operational scenario design generally includes background generation and battle plans fiction, and action plan, etc. Operational scenario background generation is a problem of the initial state background data loading, including unit organization, natural environment, social environment, the physical system and other aspects data. Battle plan fiction is the description of operational activities, which is in the initial condition under the operational condition of constraint. Action planning is to convert military scenarios to a simulation experiment script.Operational data modelOperational data is the key factor of operational reliability experiment system, it mainly includes the data about the operational deployment of both sides, the target data, weapon system, operation action data , operational security data and evaluation criteria data, etc. The purpose of operational data is to provide data for the Artillery operation command experiment, as well as the situ experimental data storage place, it is not only the experiment system of data source , but also the destination of experimental system. Therefore, operational data construction including experimental data construction and the experimental conclusion construction. The application process is shown in Fig.5.Fig. 5 Data application processConclusionCarrying out the Artillery operation experimental research based on Artillery operational experiment platform, is to build experimental environment under the background, and then puts into experiment platform for experiment, uses data analysis method, build reasonable appraisal indicators, gets certain reference value for Artillery operation experimental data and results.References:[1] Zhongwei Guo etc. Artillery operation experimental model [J]. Ordnance industry automation, 2013, 32 (9)[2] Yuhua Cao etc. Operational experiment theory and technology [M]. Beijing: National defence industry press, 2013[3] Daolei Zhou Jiang Zhu. Methods of innovation and experiment [M]. Beijing: Military science press, 2014[4] Richard Kass．The Logic of Warfighting Experimentation[C]．Understanding Joint Warfighting Experiments．10thICCRTS，2005[5] Andndrew G Loerch，Larry B Rainey．Methods for conducting Military Operational Analysis[M]．Military Operations Research Society，2007[6] Shadish，Cook，Campbell．Experimental and Quasi-experimental Designs for Generalized Causal Inference[M]．Boston:Houghton Mifflin，2002[7] Sherman Kenneth B．US Navy Global Hawk Completes Wargame[J]．Journal of Electronic Defense，2006，2(29)[8] Wolff Jason．Wargame，Modeling and Simulation[J]．Air Force Journal of Logistics，2009，2(33)。
Materials Characterization
Materials Characterization Materials characterization is a crucial aspect of scientific research and development, as it provides valuable insights into the properties and behavior of various materials. By analyzing the structure, composition, and properties of materials, researchers can better understand their performance in different applications and make informed decisions about their use. This process involves a combination of techniques, including microscopy, spectroscopy, and thermal analysis, to gather detailed information about the material at the atomic and molecular levels. One of the key goals of materials characterization is to determine the structure of a material, which can have a significant impact on its properties and performance. For example, the arrangement of atoms in a crystal lattice can affect the strength, conductivity, and other properties of a material. By using techniques such as X-ray diffraction and electron microscopy, researchers can visualize the atomic structure of a material and identify any defects or imperfections that may be present. This information is essential for understanding how a material will behave under different conditions and can help researchers design new materials with improved properties. In addition to determining the structure of a material, materials characterization also involves analyzing its composition. This includes identifying the elements present in the material, as well as their relative concentrations. Techniques such as energy-dispersive X-ray spectroscopy and mass spectrometry can be used to determine the chemical composition of a material with high precision. This information is crucial for ensuring the quality and consistency of materials, as even small variations in composition can have a significant impact on their properties. Another important aspect of materials characterization is studying the properties of a material, such as its mechanical, thermal, and electrical behavior. By subjecting a material to various tests and measurements, researchers can determine its strength, hardness, conductivity, and other important properties. This information is essential for determining the suitability of a material for a particular application and for predicting how it will perform in different environments. For example, the thermal conductivity of a material is crucial for designing efficient heat exchangers, while the electrical conductivity is important for developinghigh-performance electronic devices. Materials characterization is not only important for understanding the properties of existing materials but also for developing new materials with specific properties and performance characteristics. By combining different materials and studying their interactions at the atomic level, researchers can design materials with novel properties that are tailored to meet specific needs. This process often involves a combination of experimental techniques and computational modeling to predict how different materials will behave when combined. By understanding the structure-property relationships of materials, researchers can accelerate the development of new materials for a wide range of applications. Overall, materials characterization plays a crucial role in advancing scientific research and technological innovation. By providing detailed insights into the structure, composition, and properties of materials, researchers can make informed decisions about their use in various applications. This information is essential for optimizing the performance of materials, improving their quality and consistency, and developing new materials with unique properties. As technology continues to advance, materials characterization will remain a key area of focus for researchers seeking to push the boundaries of what is possible in materials science and engineering.。
麦弗逊悬架分析16翻译---译
ADAMS-based MacPherson front suspension kinematics simulationAbstract-the kinematic relationship between system components of automobile front suspension is very complex, which has a great influence on the maneuverability and smoothness of the whole vehicle. According to data of a MacPherson front suspension of a car, a three-dimensional model of the suspension is established by means of CATIA software; the suspension is subjected to kinematics simulation pre-processing by means of SimDesigner software; the model is led in ADAMS software; and the suspension is subjected to a kinematics simulation analysis by means of the ADAMS software, so as to study the variation pattern of positioning parameters when the suspension jumps up and down with the movement of wheels in the movement of the automobile and to evaluate the rationality of suspension data, thereby providing effective modernized means for the development of an automobile suspension system.I.I NTRODUCTIONAn independent MacPherson suspension is one of suspensions popular for cars at present, characterized in integration of a guide mechanism and a vibration damper, simplified structure, reduced mass, space saving, and lowered production cost; it almost occupies no transverse space and is favorable for the floor structure in the front of the vehicle body and the arrangement of the engine compartment in the front of the car, which is an advantage out of comparison when used as a front suspension of a compact car.Kinematic characteristics of the suspension refer to variation regularities of parameters such as kingpin inclination angle, camber angle, caster angle and the like when automobile wheels jump up and down, namely, wheels and vehicle body have relative movement in the vertical direction. Rational choice of suspension structure and performance parameters has a great and direct influence on the traveling smoothness, steering stability and comfortableness of the automobile. Therefore, a suspension system is one of important assemblies for modern automobiles. An analysis on the kinematic characteristics of the suspension is a precondition for rational selection of the suspension and geometric parameters of a suspension guide mechanism.Therefore, the suspension system is subjected to a kinematics simulation analysis in the combination of 3D modeling software CATIA from Dassault Company and kinematics simulation software ADAMS from SC Company. Analyzed are variations of suspension positioning parameters when wheels jump 50mm up and down in a vertical direction.II. Theoretical basis of multi-body modeling ADAMS software describes the space configuration of an object based on Cartesian Coordinates and Eulerian angle parameters; a problem on the solution of sparse matrix is solved by means of Gear rigid integration; ADAMS/Solver provides a plurality of solvers with mature functions, which can perform kinematics, statics and kinetics analysis on an established model.1 Selection of generalized coordinatesIn ADAMS software, the selection of generalized coordinates has a direct influence on the solution speedof a kinetic equation. Eulerian angle which reflects orientation of a rigid body and mass centric Cartesian coordinates of rigid body i are regarded as generalized coordinates, namely, []T,,,,,ϕθφzyxqi=,[]TT1,nqqq=. Each rigid body is described by six generalized coordinates. Due to the application of generalized coordinates which are not independent, kinetic equation sets of the system have the biggest number; they are differential-algebraic equations which are coupled at a highly sparse degree, applicable for methods of sparse matrixes for efficient solution.2 Establishment of kinetic equation[]T,,zyxR=，[]T,,ϕθψγ=，[]TT,γRq=An ADAMS program applies a lagrangian multiplier method to establish a motion equation of a system; mass centric Cartesian coordinates of a rigid body and an Eulerian angle which reflects orientation of a rigid body are regarded as generalized coordinates in the ADAMS, namely, []T,,,,,ϕθψzyxq=; set []T,,zyxR=, []T,,ϕθψγ= and []TT,γRq=, wherein q is a mass centric Cartesian coordinate; R is a mass centric position coordinate; γ is a mass centric Eulerian angle coordinate; three unit vectors of the coordinate system are axes of above three Euler's rotations respectively; therefore the three axes are not vertical to each other. A coordinate transformation matrix from the coordinate system to a mass centric coordinate system of a component is as follows:⎥⎥⎥⎦⎤⎢⎢⎢⎣⎡-=01cos sin 0cos sin cos 0sin sin θθφθθφθB Angular velocity of the component can be expressedas γω B =; a variable e ω in introduced in ADAMS as a component of the angular velocity in an Euler's rotationaxis coordinate system: γω =e In consideration of a constraint equation, ADAMS takes advantages of an energy form of a lagrangianequation of the first category with a lagrangian multiplier to result the following equation:ji n i j jj q Q q T q T t ∂Φ∂∑+=∂∂-⎪⎪⎭⎫⎝⎛∂∂=λ1d d （1） T is kinetic energy expressed in generalized coordinates ofthe system; j q is generalized coordinates; j Q is a generalized forced in the direction of generalizedcoordinates j j q ; the final item relates to a constraint equation and a lagrangian multiplier which express a constraining force in the direction of the generalized coordinate j q .III. Establishment of suspension modelingA 3D model of an automobile suspension is established in CATIA and ADAMS by the following steps as shown in figure 1.According to data of a MacPherson front suspension of a car, the 3D model of the suspension established in CATIA is as shown in figure 2 below:The model comprises a lower cross arm, a king pin, a steering rod, a steering knuckle, wheels and a test platform.Based on a multi-body system dynamics theory, the establishment of the model is subjected to the following hypothesis by means of kinematics simulation SimDesigner software of a mechanical system andaccording to the structural analysis on a real car: all parts and components in the suspension are regarded as rigid bodies; a damping system is simplified linear helical spring and damping; friction forces in all kinematic pairs are ignored; tires are simplified as rigid bodies.One end of the lower cross arm is connected with a carriage (herein referred to as ground) via a rotational hinge; the other end thereof is connected with the steering knuckle via a spherical hinge. A wheel isconnected with the steering knuckle via a fixing hinge. During a kinematic analysis, a vehicle body is considered to be in contact with the ground via the fixing hinge. Thesteering tie rod is connected with steering knuckle via thespherical hinge; and the other end thereof is connected with the carriage (namely, ground) via the spherical hinge. Furthermore, movement pair constraint is present between the test platform and the ground in a vertical direction; and in plane constraint is present between a wheel and the test platform in the vertical direction, as shown in figure 3.Finally, a SimDesigner model is introduced in ADAMS for a kinematic analysis.IV Suspension motion simulation analysisBased on practical application of the suspension, up-and-down jumping distance of a wheel is set to be 50mm to the maximum; and the time thereof is set to be 1s; the driving function is applied to simulating a situation when a wheel passes a rough road. In the simulation analysis, front wheel positioning parameters mainly comprisekingpin inclination angle, caster angle, camber angle, toe angle and transverse slippage of a wheel. Through the simulation analysis, 4 parameters for positioning frontwheels and a variation characteristic curve of the transverse slippage with the variation of the up-and-down jumping distance of the wheel are resulted. 1 Kingpin inclination angleIt can be concluded based on the simulation curves in figures 4 and 5 that when a virtual sample model of the present suspension is in a static balancing position, the value of the kingpin inclination angle is 11.448°; the variation range of the kingpin inclination angle is 9.960°～12.634° within the jump variation range of the whole wheel; the variation is 1.186°～1.488° with respect to the static balancing position; and the kingpin inclination angle has a bigger variation when the wheel jumps downward.II.C ONCLUSIONThrough a kinematic simulation of the MacPherson suspension, resulted are variation regularities and range of main performance parameters of the suspension when a wheel jumps, so as to verify the rationality for selecting structural parameters and positioning parameters of the MacPherson suspension, which has a certain reference value and important significance for designers of MacPherson suspensions.。
多体动力学模型 英文
多体动力学模型英文英文回答：Multi-body dynamics (MBD) modeling is a powerful tool used to analyze the behavior of complex mechanical systems consisting of multiple rigid or flexible bodies connected by joints and constraints. It employs advanced numerical techniques to simulate the dynamic interactions between these bodies, considering factors such as gravity, external forces, and contact forces.MBD models are commonly utilized in various engineering disciplines, including automotive, aerospace, robotics, and biomedical engineering. Engineers leverage MBD software to design, analyze, and optimize systems ranging from vehicles to industrial machinery and human bodies.The primary advantages of MBD modeling include:Accurate representation of complex systems: MBD modelscapture the intricate interactions and behaviors of multi-body systems, which can be challenging to analyze using traditional methods.Insight into system dynamics: MBD simulations provide valuable insights into the dynamic behavior of a system, allowing engineers to assess its stability, performance,and safety.Optimization of system design: By analyzing MBD models, engineers can identify potential design improvements, optimize component interactions, and enhance overall system performance.Virtual prototyping: MBD models enable virtual prototyping, reducing the need for physical prototypes and accelerating the product development process.Collaboration and communication: MBD models facilitate collaboration among engineers from different disciplines, providing a shared platform for design analysis and optimization.The process of creating an MBD model typically involves the following steps:1. Modeling the geometry: The physical geometry of the system is defined using CAD software or other modeling tools.2. Defining joints and constraints: The connections and constraints between bodies are specified, defining the permissible motions and interactions.3. Applying loads and boundary conditions: External forces, gravity, and other boundary conditions are applied to the model.4. Solving the equations of motion: Numerical integration methods are employed to solve the equations of motion, simulating the dynamic behavior of the system.5. Analyzing the results: The simulation outputs are analyzed to extract insights about system dynamics,performance, and potential design improvements.中文回答：多体动力学模型。
巧言令色鲜矣仁关于话术的英语作文
全文分为作者个人简介和正文两个部分：作者个人简介：Hello everyone, I am an author dedicated to creating and sharing high-quality document templates. In this era of information overload, accurate and efficient communication has become especially important. I firmly believe that good communication can build bridges between people, playing an indispensable role in academia, career, and daily life. Therefore, I decided to invest my knowledge and skills into creating valuable documents to help people find inspiration and direction when needed.正文：巧言令色鲜矣仁关于话术的英语作文全文共3篇示例，供读者参考篇1The Eloquence of Persuasion: Mastering the Art of RhetoricAs students, we are constantly faced with the challenge of persuasion – whether it's convincing our teachers of our academic prowess, swaying our peers to join a club or activity, oreven negotiating with our parents for a later curfew. In this ever-competitive world, the ability to articulate our thoughts and ideas effectively can be the deciding factor between success and failure. This is where the ancient art of rhetoric comes into play.Rhetoric, derived from the Greek word "rhetor," meaning orator or speaker, has been a cornerstone of human communication for centuries. From the ancient Greek philosophers like Aristotle and Demosthenes to modern-day politicians and public figures, mastering the art of persuasion has been a key ingredient for influencing minds and shaping opinions.At its core, rhetoric is the study of how language can be used to persuade, inspire, and move an audience. It is a multifaceted discipline that encompasses various elements, including logic, emotion, and style. Effective rhetoric is not merely about stringing together fancy words or employing complex sentence structures; rather, it is the ability to craft a compelling narrative that resonates with the audience's values, beliefs, and experiences.One of the fundamental principles of rhetoric is the concept of ethos, pathos, and logos – the three pillars of persuasion. Ethos refers to the credibility and character of the speaker,establishing trust and authority with the audience. Pathos appeals to the emotions and feelings of the listeners, eliciting empathy and emotional connection. Logos, on the other hand, relies on logic, reason, and evidence to support the argument.Mastering these three elements is crucial for any aspiring rhetorician. A skilled orator must strike the perfect balance between ethos, pathos, and logos, tailoring their approach to the specific audience and situation. For instance, when addressing a group of academics or scholars, a speaker may choose to emphasize logos by presenting well-researched facts and logical arguments. Conversely, when addressing a more emotionally charged audience, such as a rally or protest, a speaker may opt to leverage pathos, appealing to the audience's sense of justice, compassion, or righteous indignation.Effective rhetoric also requires a deep understanding of language and its nuances. Word choice, tone, and delivery can profoundly impact the way a message is received and interpreted. A skilled rhetorician understands the power of metaphors, analogies, and other rhetorical devices to paint vivid mental pictures and make complex ideas more accessible to the audience.Moreover, the art of persuasion extends beyond the spoken word. Body language, gestures, and visual aids can enhance or detract from the overall effectiveness of a speech or presentation.A confident, engaging presence and the ability to connect with the audience on a personal level can often be just as important as the content itself.In our modern age, the influence of rhetoric has only grown more pronounced. With the rise of social media and digital platforms, the ability to craft persuasive narratives and captivating messaging has become a critical skill for individuals and organizations alike. Whether it's a political campaign seeking to sway voters, a corporation attempting to sell a product or service, or an activist movement rallying support for a cause, the art of persuasion remains a powerful tool for shaping public opinion and driving change.As students, we have a unique opportunity to hone our rhetorical skills and develop our voices as future leaders, innovators, and changemakers. By studying the works of great orators throughout history, analyzing their techniques, and practicing our own public speaking and writing abilities, we can cultivate the art of persuasion and use it to positively impact the world around us.In conclusion, the art of rhetoric is a timeless discipline that has shaped the course of human civilization for centuries. From ancient philosophers to modern-day influencers, mastering the art of persuasion has been a key ingredient for inspiring minds, swaying opinions, and driving change. As students, we have the remarkable opportunity to embrace this ancient art and leverage its power to communicate our ideas effectively, negotiate skillfully, and ultimately, shape the narratives that will define our future.篇2The Eloquent Tongue: Mastering the Art of PersuasionAs a student, the ability to articulate one's thoughts and perspectives effectively is an invaluable skill that transcends academic boundaries. The art of persuasive speaking, or what the ancient Chinese philosopher Confucius referred to as"qiǎoyán lìngsè xiānyǐ rén," is a profound concept that underscores the power of eloquence in shaping minds and influencing outcomes. In this essay, I shall delve into the intricate facets of this art, exploring its significance, techniques, and the profound impact it can have on our lives.The Significance of Persuasive Speaking:In a world where ideas collide and opinions clash, the ability to persuade others is a potent tool that can bridge divides, foster understanding, and catalyze change. Effective persuasion is not merely a means of imposing one's views upon others; rather, it is a delicate dance of reason, emotion, and empathy. By mastering this art, we can navigate the complexities of human interaction, articulating our perspectives in a manner that resonates with our audience, forging connections, and ultimately, influencing mindsets.Techniques of Persuasive Speaking:The Power of Ethos: Establishing Credibility and TrustBefore we can hope to sway others, we must first establish our credibility and earn their trust. This is achieved through the careful cultivation of ethos, or the ethical appeal that emanates from our character, expertise, and integrity. By demonstrating a deep understanding of the subject matter, exhibiting honesty and authenticity, and fostering an atmosphere of mutual respect, we lay the foundation upon which our arguments can be built.The Artistry of Pathos: Appealing to EmotionsWhile logic and reason are essential components of persuasion, we must never underestimate the profoundinfluence of emotions. The skilled orator understands the delicate art of pathos, skillfully weaving narratives and imagery that resonate with the audience's emotions, fostering empathy, and forging an emotional connection that transcends mere facts and figures. Through this emotional resonance, our arguments gain a deeper level of impact and memorability.The Strength of Logos: The Power of ReasonAt the core of persuasive speaking lies the unwavering force of logos, or the appeal to reason and logic. By constructing well-structured arguments, supported by credible evidence and sound reasoning, we engage the audience's intellect, challenging them to contemplate our perspectives and consider the merits of our claims. The effective use of logos not only lends credibility to our arguments but also demonstrates our commitment to intellectual rigor and critical thinking.The Rhythm of Delivery: Captivating the AudienceBeyond the content of our message, the art of persuasive speaking hinges upon our ability to captivate and engage our audience through skillful delivery. This involves mastering the cadence and rhythm of our speech, employing strategic pauses and inflections to emphasize key points, and infusing our words with passion and conviction. By harnessing the power of vocaldynamics and body language, we create a multi-sensory experience that leaves a lasting impression on our audience.The Impact of Persuasive Speaking:The mastery of persuasive speaking extends far beyond the confines of the classroom or the boardroom. It holds the potential to shape individual lives, communities, and even the course of nations. Through effective persuasion, we can inspire positive change, challenge long-held beliefs, and advocate for causes that uplift and empower others.In the realm of academia, persuasive speaking equips us with the tools to articulate complex ideas, defend our theses, and engage in thoughtful discourse with our peers and mentors. It fosters an environment of intellectual curiosity and critical thinking, where the exchange of ideas is not merely a exercise, but a catalyst for personal growth and the advancement of knowledge.Beyond the ivory towers, the art of persuasion is an indispensable asset in the professional world. Whether negotiating contracts, pitching innovative ideas, or rallying teams towards a common vision, the ability to effectively communicate and influence others can be the difference between success and failure. Persuasive speaking empowers usto navigate the intricacies of interpersonal dynamics, bridging gaps, and forging lasting partnerships built on mutual understanding and trust.Moreover, persuasive speaking is a powerful force in shaping societal narratives and driving positive change. Throughout history, iconic figures have harnessed the power of eloquence to inspire movements, challenge injustice, and ignite the flames of revolution. From the stirring speeches of Martin Luther King Jr. to the impassioned pleas of Malala Yousafzai, the art of persuasion has been a catalyst for social transformation, reminding us of the profound impact our words can have on the world around us.Conclusion:In the tapestry of human experience, the art of persuasive speaking stands as a testament to the enduring power of communication. By mastering this art, we unlock the ability to shape minds, forge connections, and inspire action. Through the judicious use of ethos, pathos, and logos, we can navigate the complexities of human interaction, articulating our perspectives in a manner that resonates with our audience and influences their thoughts and behaviors.As students and lifelong learners, the pursuit of this art is not merely an academic exercise but a journey of self-discovery and personal growth. It challenges us to refine our critical thinking skills, cultivate empathy, and develop the confidence to express ourselves with clarity and conviction. In a world where words hold immense power, the mastery of persuasive speaking equips us with the tools to leave an indelible mark, to inspire change, and to elevate the discourse that shapes our collective future.篇3Eloquence Graces Virtue: On the Art of PersuasionFrom the ancient Greek orators to modern-day politicians and advertisers, the ability to sway hearts and minds through the deft wielding of words has been a coveted skill. Rhetoric, the art of persuasive speech and writing, has shaped the course of history, ignited revolutions, and sold countless products. As a student, I have come to appreciate the power of eloquence and its crucial role in effectively communicating ideas and influencing others.The roots of rhetoric can be traced back to ancient Greece, where philosophers like Aristotle and Plato expounded on the principles of effective communication. Aristotle's seminal work,"Rhetoric," laid the foundations for the discipline, identifying the three fundamental modes of persuasion: ethos (credibility), pathos (emotion), and logos (logic). These modes have endured as the cornerstones of rhetorical strategy, guiding speakers and writers in crafting compelling arguments tailored to their audience.At its core, rhetoric is the art of adapting language to specific situations and audiences. A skilled rhetorician understands that communication is not a one-size-fits-all endeavor; rather, it requires a nuanced approach that accounts for the unique perspectives, values, and emotions of the intended audience. This ability to shape language to resonate with diverse groups is what separates truly great communicators from the merely proficient.Throughout my academic journey, I have witnessed the transformative power of rhetoric firsthand. In the classroom, engaging professors have used rhetorical techniques to captivate their students, making complex concepts accessible and inspiring genuine interest in the subject matter. Outside the classroom, student leaders have rallied their peers through impassioned speeches, sparking movements and driving positive change on campus. Even in casual conversations, I have observedhow the artful use of language can sway opinions, defuse conflicts, and foster deeper connections.Rhetoric is not merely a tool for persuasion; it is also a means of uncovering truth and fostering mutual understanding. By employing rhetorical strategies, we can break down complex issues, present multiple perspectives, and engage in constructive dialogue. In an era of information overload and polarized discourse, the ability to communicate effectively and bridge divides is more crucial than ever.As I navigate the challenges of academic and professional life, I am continually reminded of the enduring value of rhetoric. Whether I am composing a persuasive essay, delivering a presentation, or engaging in a spirited debate, the principles of ethos, pathos, and logos serve as invaluable guides. Through the strategic use of language, I can establish credibility, appeal to emotions, and construct logical arguments that resonate with my audience.Moreover, the study of rhetoric has equipped me with invaluable critical thinking skills. By analyzing the rhetorical strategies employed by others, I have developed a heightened awareness of the subtle ways language can be used to influence and manipulate. This has made me a more discerning consumerof information, better able to separate fact from fiction and identify logical fallacies or emotional appeals masquerading as rational discourse.However, as with any powerful tool, rhetoric must be wielded with care and integrity. The misuse of rhetorical techniques can lead to deception, manipulation, and the propagation of false or harmful ideas. It is incumbent upon those who wield the art of persuasion to do so ethically, prioritizing truth and the greater good over narrow self-interest or nefarious agendas.As I continue on my academic and personal journey, I am committed to honing my rhetorical skills while upholding the highest ethical standards. I aspire to be a communicator who not only captivates audiences but also advances understanding, fosters empathy, and inspires positive change. For in the words of the ancient Roman philosopher Quintilian, "Eloquence is the true force and natural grace of language."。
下肢外骨骼康复机器人及其关键技术研究
下肢外骨骼康复机器人及其关键技术研究李静-，朱凌云-，2@，苟向锋#，2(1.天津工业大学机械工程学院，天津300387;2.天津市现代机电装备技术重点实验室，天津300387)[摘要]介绍了国内外悬挂式和穿戴式下肢外骨骼康复机器人的研究现状，分析了下肢外骨骼康复机器人的机构自由度、驱动方式、驱动关节、训练模式、人机交互技术/感知技术等五大关键技术，指出了下肢外骨骼康复机器人存在关节活动度少、人机交互程度低、反应迟缓等问题，展望了下肢外骨骼康复机器人将以精简机械结构、提高续航能力、提升人机交互程度为发展重点。
[关键词]下肢康复机器人;外骨骼康复机器人;康复训练;机器人技术;人机交互[中国图书资料分类号]R318;T P242 [文献标志码]A[文章编号]1003-8868(2018)08-0095-06DOI ： 10.7687/j.issn l003-8868.2018.08.095Survey on exoskeleton lower limbs rehabilitation robot andkey technologiesLI Jing1, ZHU Ling-yun1,2*, GOU Xiang-feng1,2(1. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;2. Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin 300387, China)Abstract The domestic and international development status of the lower limb rehabilitation robot was reviewed. The robot had its key technologies analyzed including those for mechanism degree of freedom, driving mode, driving joint, training mode as well as human-computer interface/sensing, which had problems in joint motility, human-computer interaction, response velocity and etc. It’s pointed out that the robot be improved in mechanical structure, endurance and hum an-computerinteraction in the future. [Chinese Medical Equipment Journal ,2018,39(8)：95-100]Key words lower limbs rehabilitation robot; exoskeleton rehabilitation robot; rehabilitation training; robot technology; human-computer interaction〇引言随着我国社会老龄化问题逐年严重、残疾人比 例逐年上升，老年人和残疾人的活动障碍问题尤为 突出。
Modelica语言及其多领域统一建模与仿真机理1
Ｍｏｄｅｌｉｃａ语言提供了功能强大的软件组件模型，其具有 与硬件组件系统同等的灵活性和重用性。Ｍｏｄｅｌｉｃａ的软件组 件模型主要包含三个概念：组件、连接机制和组件构架。组 件通过连接机制进行交互连接。组件构架实现组件和连接， 确保由连接维持的约束和通讯工作稳定可靠。
在Ｍｏｄｅｌｉｃａ语言中，组件的接口称作连接器，建立在 组件连接器上的耦合关系称作连接。如果连接表达的是因果 耦合关系，则称其为因果连接。如果连接表达的是非因果耦 合关系，则称其为非因果连接。
引言
耦合关系。 基于统一建模语言的方法对来自不同领域的系统构件
随着建模技术和数值技术的发展，数学建模与仿真在产
采用统一方式进行描述，彻底实现了不同领域模型之间的无
品设计中的作用越来越重要，已经成为测试和分析产品技术
缝集成和数据交换。Ｍｏｄｅｌｉｃａ语言［２－５１是目前盛行的一种多
性能的一项重要手段。然而，随着产品复杂度的不断提高，
ｃｏｎｎｅｃｔｏｒ Ｐｉｎ Ｒｅａｌ ｖ； ｆｌｏｗＲｅａｌｆ； ｅｎｄＰｉｎ；
Ｍｏｄｅｌｉｃａ连接必须建立在相同类型的两个连接器之上， 表达组件之间的耦合关系。这种耦合关系在语义上通过方程 实现。故Ｍｏｄｅｌｉｃａ连接在模型编译时会转化为方程。具体 来说，流变量之间的耦合关系由“和零”形式的方程表示， 即连接交汇点的流变量之和为零。势变量之间的耦合关系由 “等值”形式的方程表示，即连接交汇点的势变量值相等。
第１８卷增刊２ ２００６年８月
系统仿真学报＠ Ｊｏｕｒｎａｌ ｏｆ Ｓｙｓｔｅｍ Ｓｉｍｕｌａｔｉｏｎ
Ｖ０１．１８ Ｓｕｐｐｌ．２ Ａｕｇ．，２００６
Ｍｏｄｅｌｉｃａ语言及其多领域统一建模与仿真机理
赵建军，丁建完，周凡利，陈立平
供应链下的多级存货管理外文文献
供应链下的多级存货管理外文文献1、IntroductionIn today's globalized and interconnected business environment, supply chain management has become an essential component of enterprise success. One of the key elements of supply chain management is inventory management, which involves the effective management of inventory levels across multiple tiers of the supply chain. This article examines the concept of multi-level inventory management within the context of supply chain management and explores relevant literature from foreign sources.2、Supply Chain Management and Inventory ManagementSupply chain management involves the integration and coordination of various activities across all levels of a supply chain, from suppliers to manufacturers, distributors, and consumers. Inventory management, specifically, refers to the effective management of inventory levels in order to meet demand while minimizing costs and risks. It involves theidentification of demand patterns, the determination of appropriate inventory levels, and the implementation of policies and procedures to ensure that inventory is rotated and utilized effectively.3、Multi-Level Inventory Management in the Supply ChainMulti-level inventory management refers to the management of inventory across multiple tiers or levels within a supply chain. It involves the coordination and synchronization of inventory levels across different stages of the supply chain to ensure efficient flow of goods and materials. By managing inventory at multiple levels simultaneously, enterprises can optimize overall inventory levels while ensuring that each tier of the supply chain is able to meet demand.4、Foreign Literature Review on Multi-Level Inventory ManagementA review of foreign literature on multi-level inventory management reveals a growing body of research on this topic. Studies have focused on various aspects of multi-levelinventory management, including demand forecasting, inventory policies, and supply chain coordination. Notably, research has shown that multi-level inventory management can significantly improve overall supply chain performance by reducing costs and increasing efficiency.5、ConclusionThe concept of multi-level inventory management within the context of supply chain management has gained significant attention in recent years. A review of foreign literature suggests that effective multi-level inventory management can lead to significant improvements in overall supply chain performance by optimizing inventory levels across different stages of the supply chain. Enterprises that adopt multi-level inventory management strategies can expect to achieve cost savings, increased efficiency, and a more robust supply chain overall.6、Recommendations for Future ResearchDespite the growing body of research on multi-level inventorymanagement, there are still several areas that require further exploration. Future research could focus on developing more advanced demand forecasting techniques to improve accuracy and reduce demand uncertnty. Additionally, studies could investigate novel inventory policies and strategies that can further optimize inventory levels across different tiers of the supply chn. Finally, research could also examine the role of technology in supporting multi-level inventory management, including the use of artificial intelligence, big data analytics, and other emerging technologies.供应链管理外文翻译供应链管理是一种全面的管理方法，旨在优化供应链的运作，提高效率和竞争力。
人体骨肌系统的整体生物力学建模与仿真分析研究中国力学虚拟人系统集成方法与实现
人体骨肌系统的整体生物力学建模与仿真分析研究中国力学虚拟人系统集成方法与实现一、本文概述Overview of this article随着生物医学工程、计算机仿真技术及力学研究的不断深入，人体骨肌系统的生物力学建模与仿真分析在医疗、康复、体育训练及人体工程学等领域的应用越来越广泛。
其中，中国力学虚拟人系统作为一种集成多源数据、高精度人体模型与仿真技术的创新平台，为深入研究和理解人体骨肌系统的生物力学特性提供了强大的工具。
本文旨在探讨中国力学虚拟人系统集成方法与实现，通过对人体骨肌系统的整体生物力学建模与仿真分析，为相关领域的研究与实践提供理论支持和技术指导。
With the continuous deepening of biomedical engineering, computer simulation technology, and mechanical research, the biomechanical modeling and simulation analysis of the human skeletal muscle system are increasingly widely used in fields such as medicine, rehabilitation, sports training, and ergonomics. Among them, the Chinese Mechanical Virtual HumanSystem, as an innovative platform that integrates multi-source data, high-precision human models and simulation technology, provides a powerful tool for in-depth research and understanding of the biomechanical characteristics of the human skeletal muscle system. This article aims to explore the integration method and implementation of Chinese mechanical virtual human system, and provide theoretical support and technical guidance for research and practice in related fields through the overall biomechanical modeling and simulation analysis of the human skeletal muscle system.本文首先介绍了人体骨肌系统生物力学建模的基本原理和方法，包括骨骼结构、肌肉力学特性及关节运动学等方面的建模技术。
多智能体博弈对抗场景 英语
多智能体博弈对抗场景英语In a multi-agent adversarial scenario, intelligent agents are pitted against each other in a competitive environment where they must make strategic decisions to outperform their opponents. This type of scenario is commonly found in games, financial markets, and cybersecurity.Intelligent agents in a multi-agent adversarial scenario rely on various techniques such as game theory, reinforcement learning, and evolutionary algorithms to make decisions. These techniques enable the agents to learn from their interactions with the environment and their opponents, and to adapt their strategies accordingly.One of the key challenges in a multi-agent adversarial scenario is the need for the agents to anticipate and respond to the actions of their opponents. This requires the agents to not only make decisions based on their own objectives, but also to take into account the potential actions of their opponents and the impact of those actions on the overall outcome.In a game setting, for example, intelligent agents may use techniques such as minimax search and Monte Carlo tree search to analyze the possible moves of their opponents and to choosethe best course of action. In financial markets, intelligent agents may use predictive modeling and risk analysis to anticipate the actions of other market participants and to optimize their trading strategies accordingly. In cybersecurity, intelligent agents may use anomaly detection and threat modeling to identify and respond to the actions of malicious actors.Overall, the ability of intelligent agents to effectively compete in a multi-agent adversarial scenario depends on their capacity to learn, adapt, and make strategic decisions based on their understanding of the environment and their opponents.在多智能体对抗场景中，智能体被置于一个竞争环境中，它们必须做出战略决策以超越对手。
毕业设计（论文）-发动机曲轴连杆机构仿真及有限元分析设计-adams
全套图纸加扣 3012250582曲轴连杆活塞组件虚拟样机的建立学院名称：机械工程学院专业班级：机械设计制造及其自动化0501 班学生姓名：号：学指导教师：2009 年6 月摘要柴油机的气缸、活塞、连杆、曲轴以及主轴承组成一个曲柄连杆机构。
柴油机通过曲柄连杆机构，将活塞的往复运动转换为曲轴的回转运动，使气缸内燃油燃烧所产生的热能转变为曲轴输出的机械功。
可见，曲柄连杆机构是柴油机重要的传力机构。
对其运动和受力情况进行分析和研究，是十分必要的。
这种分析研究既是解决柴油机的平衡、振动和总体设计等课题的基础，也是对其主要零部件在强度、刚度、磨损等方面进行计算和校验时的依据。
本文在曲柄连杆机构理论分析的基础上，利用多体动力学理论，三维造型软件Pro/E 及动力学分析软件ADAMS对内燃机曲柄连杆机构的动力学问题进行了虚拟样机仿真分析。
并以CT484Q柴油机为研究对象，在Pro/E中建立CT484柴油机曲柄连杆机构的虚拟样机模型，导入ADAMS中进行动力学分析，绘制出虚拟样机模型中各连接位置处受力仿真结果曲线。
通过本文的研究，展示了一种简捷、高效的机械设计分析手段，对今后同类型的研究乃至更大规模的仿真分析积累了一些经验。
本文的研究也可以为今后内燃机机构的造型、优化设计提供参考依据。
关键词：内燃机，曲柄连杆机构，ADAMS，虚拟样机，仿真AbstractThe Cylinder, piston, connecting rod, crankshaft and main bearings of diesel engine Compose of a crank-connecting rod mechanism. Through the crank-connecting rod mechanism, Diesel engine convert the piston reciprocating motion to the rotary movement of the crankshaft, and make the cylinder generated by fuel combustion energy into mechanical work output of the crankshaft. This shows that diesel engine crank linkage is an important body for transmission force. It is necessary to analysis and research its movement and force. This analysis is the foundation to solve the balance of diesel engine, vibration and overall design, It is the basis for validate and calculate the strength, stiffness, wear, etc.In this paper, based on the theoretical analysis of crank-connecting rod mechanism, use of multi-body dynamics theory, and use the three-dimensional modeling software, Pro/ E and the dynamic analysis software ADAMS to carry out crank and connecting rod for internal combustion engine body dynamics simulation of a virtual prototype simulation. And study CT484Q Diesel Engine, established linkage of the virtual prototype of diesel engine model In Pro/ E, then do dynamic analysis in ADAMS and draw the connection position of the power curve for the simulation result.Through this paper, the study demonstrated a simple and efficient means of mechanical design and analysis for future research as well as the same type of simulation analysis and accumulate some experience. The study of this paper can provide reference for the modeling and optimal design.Key words: Internal Combustion Engine, Crank-connecting rod mechanism, ADAMS, Virtual Prototyping目录第一章绪论··················································1.1 研究的意义···············································1.2 内燃机曲柄连杆机构的工作特点以及难点·····························1.3 国内外研究及手段···········································1.3.1计算机辅助设计（CAD）·····································1.3.2 多体动力学分析（MBS）···································1.3.3 有限元分析···········································1.3.4优化设计理论··········································1.4 主要研究内容和方法··········································第二章曲柄连杆机构的动力学理论分析·······························2.1 内燃机工作过程分析··········································2.1.1压缩始点气体状态·········································2.1.2压缩终点气体状态········································2.1.3燃烧过程及燃烧终点气体状态·································2.1.4膨胀终点气体状态········································2.2 曲柄连杆机构的运动分析·······································2.3曲柄连杆机构的动力学分析······································2.3.1曲柄连杆机构的质量换算····································2.3.2曲柄连杆机构的惯性力和惯性力矩······························2.3.3曲柄连杆机构的动力学分析··································2.4 内燃机工作过程计算··········································第三章曲轴连杆活塞组件的虚拟样机································3.1Pro/E 系统的建模原理及其特点····································3.1.1参数化设计············································3.1.2 特征建模的基本思想······································3.1.3全相关的单一数据库······································3.2 曲柄、连杆、活塞组件几何模型的建立以及装配··························3.2.1活塞组件的建模·········································3.2.2 连杆组建的建模········································3.2.3曲轴组件的建模·········································3.2.4曲轴连杆活塞组件的总装配···································第四章曲柄连杆机构的运动学和动力学分析·····························4.1ADAMS简介及其基本原理·······································4.1.1 运动学和动力学基本概念···································4.1.2 ADAMS中多刚体动力写方程的建立······························4.2ADAMS 中的运动学和动力学分析···································4.2.1 曲柄连杆机构刚体模型的转化和输入·····························4.2.2 曲轴轴系多刚体动力学仿真分析·······························第五章结论与展望·············································5.1 总结····················································5.2 展望····················································致谢························································参考文献·····················································附录·························································第一章绪论1.1研究的意义内燃机是目前世界上应用最广泛的热动力装置，自1860年法国人设计出第一台煤气发动机以来，内燃机无论是在结构上还是在性能上都较以前有了很大的进步。
浙江大学工业控制技术国家重点实验室2019年开放课题项目
广州大学
4
薛拾贝 量子系统中非马尔可夫环境的辨识算法研究
5
杜静静 基于 gap metric 的非线性系统广义一体化多模型控制
Identification algorithms for non-Markovian environments of quantum systems Generalized integrated multimodel control of nonlinear systems
Rongxing
广东工业大学
12
许斌
面向系统约束的无人飞行控制
UAV Flight Control Under System Constraint
西北工业大学
The finite element method of PDE optimal control
于欣、任志 基于最大值原则和唯一延拓性的偏微分方程最优控制问题
8
陈达奇 基于无线 QCM 阵列的肺癌早期诊断
Research of aperiodic sampling systems in complex dynamic networks Early diagnosis of lung cancer based on wirelesselectrodeless QCM array
National University of Singapore
16
傅永峰 动态软测量建模技术在多相流检测中的应用研究
Study on Application of Dynamic Soft Sensor Modeling Technique in Multiphase Flow System
浙江工业大学之江学院
2
张萌
Geometric Modeling
Geometric ModelingGeometric modeling is a crucial aspect of computer graphics and design,playing a fundamental role in various industries such as architecture, engineering, and entertainment. It involves the creation and manipulation of digital representations of geometric shapes and objects, allowing for the visualizationand analysis of complex structures and designs. However, despite its significance, geometric modeling presents several challenges and limitations that need to be addressed to enhance its efficiency and effectiveness. One of the primary problems in geometric modeling is the complexity of representing real-worldobjects and environments. Creating accurate and realistic digital models ofnatural or man-made objects requires a high level of detail and precision, which can be extremely time-consuming and resource-intensive. Moreover, the process of capturing and converting physical measurements into digital representations often involves a significant amount of manual work, leading to potential errors and inconsistencies in the final models. Another issue in geometric modeling is the difficulty of handling geometric transformations and deformations. Objects in the real world are not static and can undergo various changes in shape, size, and orientation. Therefore, geometric models need to be capable of accurately representing these transformations, such as bending, stretching, and twisting, while maintaining their structural integrity and visual coherence. This necessitates the development of advanced algorithms and techniques for modelingand simulating complex geometric deformations. Furthermore, geometric modeling faces challenges related to data interoperability and compatibility. Different software applications and platforms may use distinct data formats and standardsfor representing geometric models, making it difficult to exchange and collaborate on projects across different environments. This lack of interoperability canhinder the seamless integration of geometric models into various workflows and pipelines, leading to inefficiencies and communication barriers within the industry. Additionally, the issue of scalability and performance poses a significant challenge in geometric modeling. As the complexity and size of geometric models increase, the computational resources and processing power required for their manipulation and visualization also escalate. This can lead toperformance bottlenecks and limitations in handling large-scale models, impacting the efficiency and responsiveness of geometric modeling systems. Moreover, the lack of standardization and best practices in geometric modeling contributes tothe proliferation of inconsistent and non-uniform modeling approaches. Without established guidelines and conventions, it becomes challenging for practitioners and researchers to ensure the quality and reliability of geometric models, potentially leading to discrepancies and inaccuracies in their representation and interpretation. Addressing these challenges in geometric modeling requires amulti-faceted approach that encompasses advancements in computational algorithms, data interoperability standards, and industry-wide collaboration. Research and development efforts should focus on enhancing the accuracy and efficiency of geometric modeling techniques, particularly in capturing and representing complex real-world objects and environments. This may involve the integration of advanced sensing technologies, such as 3D scanning and photogrammetry, to streamline the process of acquiring geometric data and improving the fidelity of digital models. Furthermore, the development of standardized data formats and interoperability protocols is essential for promoting seamless integration and exchange ofgeometric models across different software applications and platforms.Establishing industry-wide standards and best practices can help mitigate the challenges associated with data compatibility and streamline the workflow for geometric modeling professionals and stakeholders. In addition, the advancementof parallel processing and distributed computing technologies can address the scalability and performance limitations of geometric modeling systems. By leveraging the power of parallel computing, geometric modeling software can efficiently handle large-scale models and complex simulations, enabling practitioners to work with unprecedented levels of detail and intricacy. Moreover, the establishment of community-driven initiatives and collaborative platforms can foster knowledge sharing and consensus-building in geometric modeling. By bringing together experts and practitioners from diverse backgrounds, these initiatives can facilitate the development of common guidelines and practices for geometric modeling, promoting consistency and quality across the industry. Ultimately, addressing the challenges in geometric modeling requires a concerted effort fromresearchers, practitioners, and industry stakeholders to drive innovation, standardization, and collaboration. By overcoming these obstacles, the field of geometric modeling can realize its full potential in enabling the creation of accurate, realistic, and impactful digital representations of the world around us.。
用于肌电假肢手控制的表面肌电双线性模型分析_王涛_侯文生_吴小鹰_万小萍_郑小林
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y∈Ｒ ， 其 图中： y 表示的是表面肌电信号特征值矩阵， y 会随着 中 k∈（ 1 ～ k） K 表示的是表面肌电信号特征值个数， 手指及力量水平的改变而改变。由于表面肌电信号在不同个 体之间表现较大差异， 可将其特征值分为个人因素部分和运动 相关部分。本文利用对称双线性模型将特征值矩阵 y 表示 如下： yk = zT Wk x
比例控制假肢输出力量大小。 为了更好地将 sEMG 应用于肌电假肢等人机接口控 从表面肌电信号中解码手部运动模式及其力量水平 制中， 是需要解决的基本问题， 其主要思路是运用模式识别运动 预测表面肌电信号与运动模式及其力量水平之间关系模 ［5 ］ 型， 并利用其完成分类 ； 研究较多的模型包括自回归平
第 35 卷 第 8 期 2014 年 8 月
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Chinese Journal of Scientific Instrument
Vol. 35 No. 8 Aug． 2014
用于肌电假肢手控制的表面肌电双线性模型分析
王
1 1， 2 1， 2 1， 2 1， 2 万小萍 ，郑小林 涛 ，侯文生 ，吴小鹰 ，
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x 表示的是动作模式部 式中： z 表示的是个人因素部分， W k 属于双线性模型的系数矩阵。 分，
m zu ， Wk ｝ ， 模型计算的主要目的是为了求解变量｛ x ， 使得 u ， m ， k E 。 对于所有的 能够使模型误差值 获得最小值
上肢助力外骨骼研究综述
2023年第47卷第3期Journal of Mechanical Transmission上肢助力外骨骼研究综述郭骐源1胡志刚1，2付东辽2（1 河南科技大学机电工程学院，河南洛阳471003）（2 河南科技大学医学技术与工程学院，河南洛阳471003）摘要简述了在当前疫情灾情多发、劳动力资源短缺的情况下开发上肢助力外骨骼的重要意义，介绍了外骨骼的发展历程、分类方式以及上肢助力外骨骼的特点、适用人群、应用场景等。
详细介绍了国内外上肢助力外骨骼相关研究成果和产品，包括其基本构造以及评估实验结果，并对其中的关键技术（如驱动和传动、人机交互中所涉及的人体运动意图识别、人机协同运动等）进行了阐述和分析。
总结了当前研究中仍存在的问题，并对上肢助力外骨骼未来的发展趋势进行了展望。
关键词上肢助力外骨骼评估实验人机交互人体运动意图识别人机协同运动Review of Research on Upper Limb Assisted ExoskeletonsGuo Qiyuan1Hu Zhigang1，2Fu Dongliao2(1 School of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang 471003, China)(2 School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471003, China)Abstract The significance of developing upper limb assisted exoskeletons in the current epidemic situation, frequent disasters and shortage of labor resources is briefly described. The development history, classification methods of exoskeletons and the characteristics, applicable groups, application scenarios of upper limb assisted exoskeletons are introduced. The research results and products related to upper limb assisted exoskeletons at home and abroad are reviewed in detail, including their basic structure and evaluation experimental results, and the key technologies are described and analyzed such as the drive and transmission, human motion intention recognition, human-robot coordinated motion involved in human-robot interaction, etc. The existing problems in the current research are summarized and the future development trend of upper limb assisted exoskeletons is prospected.Key words Upper limb assisted exoskeleton Evaluation experiment Human-robot interaction Human motion intention recognition Human-robot coordinated motion.0 引言工作相关肌肉骨骼病（Work-related Musculo Skeletal Disorders，WMSDs）是由职业工作引起或加重的肌肉骨骼系统的损伤性疾病的统称，其特征是部分肌肉骨骼组织损伤、持续疼痛等。
风力发电机组传动链动力学建模与仿真分析研究
2.1 引言....................................................................................................................................... 9 2.2 刚体运动学........................................................................................................................... 9
The main contents are as follows: ① Analyzed the utilization of wind resource and the development trend of wind power technology and sharing the research scholars of the wind turbine dynamics modeling and simulation analysis at home and abroad. ② Basis of the wind turbine multi-body modeling, derivate the kinematics and dynamics formulas of rigid and flexible multi-body. the finite element method was also introduced. ③Based on the drivetrain’s structure and load transfer routine developing the drivetrain topology diagram. the flexible multi-body simulation model was build combining with the diagram and finite element method. ④Execute modal analysis on the SIMPACK software , the natural frequencies and its energy of the drivetrain were obtained. the two dimensional Campbell chart were drawn the information of potential resonance point obtained in the end. ⑤Each response components acceleration curve obtained by time domain torque sweep, this curve transform to frequency domain using the FFT method.the resonance point is determined by the transform curve peak value.
Korg 61 键电子琴说明书
N e x t-G e n e r a t i o n S y n t h e s i s f o r Un l i m i t ed S on i c C o n t r o l.s Touchs creen DisplayV-Synth’s large LCD screen responds to touch and dragging motions—making it easy to set graphic parameters like envelope curves and filter response.Intuitive sound editing with semi-modular structures The V-Synth’s vast sound engine can be configured in several different ways by choosing from three differentstructure types. These structures define the signal flow including the routing of COSM processors. Dedicated buttons and diagrams make selecting a structure easy, while a host of knobs, buttons and sliders offer direct access to the most vital sound parameters. Careful consideration was given to each knob and slider, ensuring that sounds can be edited quickly and easily. More detailed parameters can be edited on the V-Synth’s large touchscreen, which even responds to dragging motions.Imagine setting an envelope curve just by sliding yourfinger on the screen! Whether you’re new to synthesizersor a seasoned programmer, the V-Synth makes it easy todive in and get the sounds you want.New variable oscillators powered by VariPhraseAt the heart of the V-Synth are two variable oscillatorswith a choice of three types: PCM, Analog Modeling andExternal Audio Processing. The PCM oscillator usesVariPhrase technology tobring new life to otherwisestatic waveforms. Sampleyour own waveform orchoose from hundreds ofpresets, then independently manipulate pitch, time andformant. A world’s first TimeTrip function lets you controlthe time aspect of a waveform in any way desired.Choose the Analog Modeling oscillator and you’ll getnine fat-sounding analog waveforms beefed up for evenmore warmth and punch. Or process any external soundthrough V-Synth’s incredible architecture by selecting theExternal Audio Processing type. No othersynthesizer provides this degree of sonic control.COSM processing =total sound shapingInstead of typical multi-mode filters, the V-Synthfeatures two dedicated COSM processors forwarping sounds in entirely new ways. If youwant traditional filters, they’re there. But if you want togo beyond, simply select an algorithm like polyphonicguitar amp modeling or the unique Side Band Filter,which can pull out the sharper, metallic content ofsounds. There’s also a Wave Shaper, Resonator(polyphonic waveformprocessing through amodeled resonation body)and more. These tools arean essential part of thesound creation process andcan radically alter anysound. The V-Synth’s separatereverb, chorus and MFX handle all global effects processing.Sample your own waves, or import via USBAny of the V-Synth’s internal waveforms can bes St ructure Pane lThe V-Synth offers three structure types, which determine the signal flow of the dual oscillators. Structures can be selected using thefront-panel buttons.s Oscillator Pane lVariable oscillators let you choose from three different sound generatingtechniques. These include analog modeling, external audio processing,and PCM synthesis withVariPhrase control.overwritten with user-sampled waves. Simple record fromthe stereo analog input or the S/PDIF digital input, andyou can edit the sample and use it as an internalwaveform. The V-Synth’s USB port also makes for aconvenient way to import .WAV and AIFF files from acomputer. You can even resample an effected sound orany performance played with the TimeTrip Pad, D Beamor arpeggiator. Sample data can be quickly copied to acomputer via USB, or to an optional PC card. And bypurchasing readily available PC card adapters, othermedia like CompactFlash, SmartMedia and MicroDrivescan also be used.s COSM Processor Control sSounds can be further shaped using two COSM processors.These include modeled multi-mode analog filters, plusother tools like a Wave Shaper andmetallic Side Band Filter.Side Band FilterWave ShaperDynamic TVFs COSM Processing Exampl esAdd your own “touch” with the TimeTrip Pad Roland’s revolutionary TimeTrip Pad offers a degree of sonic control never before possible. Simply rub your finger along the pad in a clockwise or counter-clockwise motion to scan a waveform forwards or backwards in time—without changing pitch or formant. Slow a waveformdown to uncover rich harmonic content, speed it up, or freeze it at any position—all with the touch of your finger.Imagine adding expressive phrasing to a lead vocal sample or manipulating a drum loop like a DJ without changing pitch. The TimeTrip Pad lets you create amazing new sounds and effects not possible in software.Awe-inspiring performance controllersThe V-Synth is not only a powerful sound sculpting tool,but also a killer performance synthesizer. To start, you geta programmable arpeggiator that can instantly create backing chords or turn a few notes into a blazing techno sequence.The arpeggiator can also control synthesis parameters like filter cutoff or envelope decay—just like a vintage step sequencer.Arpeggio settings are stored with each Patch, making it easy to recall hundreds of patterns in performance.For the ultimate in realtime control, check out the V-Synth’s Twin D Beam. Using two infrared lightbeams, you can control a variety of preset controller functions—or even play melodies—by moving your hand vertically and horizontally in the air. Your crowd will be amazed!An I nterac t i ve Approach to Sound.■TimeTrip PadThis innovative controller lets you adjust the time parameter of a waveform in real time—without affecting pitch or formant—simply by dragging your finger along the pad.■Programmable ArpeggiatorUse the arpeggiator to create complex riffs from a single note or chord, or to create timbral changes that add rhythmic motion to a sound.■Twin D BeamControl a variety of effects and controllers using two infrared beams of light. Examples include oscillator pitch, LFO depth, TimeTrip and more.*D Beam light has been colored for illustraitive purposes only.Actual infrared light beam is invisible.Groundbreaking V-LINK video controlV-LINK is another new approach to creative expression,allowing playback and even performance of video clips with music created on the V-Synth; all you need is the Edirol DV-7PR Digital Video Workstation (sold separately). Use V-LINK to trigger different video clips with V-Synth’s keyboard while using the bender to change playback speed. Using the TimeTrip Pad,you can scan a clip forwards or backwards with your finger, or change colors using the Twin D Beam. The future is now, and it’s called V-LINK.■V-LINKRoland’s V-LINK makes it possible to control video clips when used with an Edirol DV-7PR Digital Video Workstation (sold separately).。
甲醇制乙烯(mto)工艺精馏工段工艺设计
甲醇制乙烯(mto)工艺精馏工段工艺设计Methanol-to-olefins (MTO) process technology has gained significant attention in recent years due to its potential for ethylene production. The design of the distillation section in the MTO process plays a critical role in optimizing the separation of products and improving overall process efficiency. In this discussion, we will explore the key considerations and challenges involved in designing the distillation section for the MTO process.我提出的问题是：甲醇制乙烯（MTO）过程技术的精馏部分的工艺设计。
Distillation is a widely used separation technique in chemical processes, including the MTO process. In the context of MTO, the distillation section serves to separate methanol, light olefins (ethylene and propylene), and heavier by-products such as C4+ olefins and aromatics. The design of the distillation column involves selecting appropriate internals, determining optimal operating conditions, and configuring heat integration schemes.蒸馏是化学过程中常用的分离技术，包括MTO过程。
机电一体化装备数字孪生机理模型构建准则
机电一体化装备数字孪生机理模型构建准则To establish criteria for constructing a digital twin model of mechatronic integrated equipmentMechatronic integrated equipment refers to the integration of mechanical, electrical, and computer systems in modern industrial machinery. With the rapid development of information technology and industrial automation, the concept of digital twins has gained increasing popularity. The digital twin is a virtual replica of a physical product or process. It allows real-time monitoring, analysis, and optimization of equipment performance.However, constructing an effective digital twin model for mechatronic integrated equipment requires following certain criteria:1. Accurate Representation: The digital twin model should accurately represent the physical characteristics and behavior of the mechatronic integrated equipment. Thisincludes capturing all relevant parameters such as dimensions, material properties, kinematics, dynamics, and control algorithms.2. Multi-domain Integration: Mechatronic integrated equipment involves various domains such as mechanical engineering, electrical engineering, and computer science. The digital twin model should integrate these domains seamlessly to capture their interactions and interdependencies accurately. This can be achieved through multi-physics modeling and co-simulation techniques.3. Real-time Data Acquisition: To ensure accurate monitoring and control of mechatronic integrated equipment, real-time data acquisition is crucial. The digital twin should be capable of acquiring data from sensors installed on the physical equipment and updating its model accordingly.4. Model Validation: It is essential to validate the accuracy of the digital twin model by comparing its predictions with actual measurements from the physicalequipment. This will help identify discrepancies and improve the reliability of the model.5. Scalability: Mechatronic integrated equipment comes in various sizes and complexities. The digital twin model should be scalable to accommodate different types of equipment with varying degrees of complexity.6. Interoperability: The digital twin model should be compatible with existing industrial standards and protocols to facilitate seamless integration with other systems like supervisory control and data acquisition (SCADA) systems or enterprise resource planning (ERP) systems. This allows for comprehensive data exchange and collaborative decision-making.7. Security and Privacy: As the digital twin model involves transmitting and storing sensitive equipment data, ensuring security and privacy is of utmost importance. Robust encryption methods, access controls, and data anonymization techniques should be implemented to protect the integrity and confidentiality of the information.建立机电一体化装备数字孪生机理模型的准则在现代工业机械中，机电一体化装备指的是机械、电气和计算机系统的集成。
介绍陶瓷(英文版)
Noted Ceramics
White Pottery
White pottery is a kind of pottery whose outside and inside are all white. The greenware（陶胚） is mostly made by hand. It uses porcelain clay or kaolinite, which contain less iron than figuline, and is fired at a temperature of about 1000 ℃. In the late Shang Dynasty (13th century - 11th century BC).
7、The Han Dynasty（ 206BC-220AD）： Multi-colored（综合彩）glaze was also introduced in . 8、The Sui Dynasty（581-618）：Greater variety and color.
9、TheTang Dynasty( 618-907 ) :More color was applied them in ，the invention of potters who introduced white, yellow, blue, green, brown, purple and so on.
Classic Work of Painted Pottery
The classic one is Human Face and Fish Body Design Colored Pottery Basin, which was made in the Neolithic age (5000 to 10000 years ago) and unearthed in the 1950s in Banpo Village in Xi'an of Shaanxi Province.