速度控制系统设计外文翻译

译文

流体传动及控制技术已经成为工业自动化的重要技术，是机电一体化技术的核心组成之一。而电液比例控制是该门技术中最具生命力的一个分支。比例元件对介质清洁度要求不高，价廉，所提供的静、动态响应能够满足大部分工业领域的使用要求，在某些方面已经毫不逊色于伺服阀。比例控制技术具有广阔的工业应用前景。但目前在实际工程应用中使用电液比例阀构建闭环控制系统的还不多，其设计理论不够完善，有待进一步的探索，因此，对这种比例闭环控制系统的研究有重要的理论价值和实践意义。本论文以铜电解自动生产线中的主要设备——铣耳机作为研究对象，在分析铣耳机组各构成部件的基础上，首先重点分析了铣耳机的关键零件——铣刀的几何参数、结构及切削性能，并进行了实验。用电液比例方向节流阀、减压阀、直流直线测速传感器等元件设计了电液比例闭环速度控制系统，对铣耳机纵向进给装置的速度进行控制。论文对多个液压阀的复合作用作了理论上的深入分析，着重建立了带压差补偿型的电液比例闭环速度控制系统的数学模型，利用计算机工程软件，研究分析了系统及各个组成环节的静、动态性能，设计了合理的校正器，使设计系统性能更好地满足实际生产需要

水池拖车是做船舶性能试验的基本设备,其作用是拖曳船模或其他模型在试验水池中作匀速运动,以测量速度稳定后的船舶性能相关参数,达到预报和验证船型设计优劣的目的。由于拖车稳速精度直接影响到模型运动速度和试验结果的精度,因而必须配有高精度和抗扰性能良好的车速控制系统,以保证拖车运动的稳速精度。本文完成了对试验水池拖车全数字直流调速控制系统的设计和实现。本文对试验水池拖车工作原理进行了详细的介绍和分析,结合该控制系统性能指标要求,确定采用四台直流电机作为四台车轮的驱动电机。设计了电流环、转速环双闭环的直流调速控制方案,并且采用转矩主从控制模式有效的解决了拖车上四台直流驱动电机理论上的速度同步和负载平衡等问题。由于拖车要经常在轨道上做反复运动,拖动系统必须要采用可逆调速系统,论文中重点研究了逻辑无环流可逆调速系统。大型直流电机调速系统一般采用晶闸管整流技术来实现,本文给出了晶闸管整流装置和直流电机的数学模型,根据此模型分别完成了电流坏和转速环的设计和分析验证。针对该系统中的非线性、时变性和外界扰动等因素,本文将模糊控制和PI控制相结合,设计了模糊自整定PI控制器,并给出了模糊控制的查询表。本文在系统基本构成及工程实现中,介绍了西门子公司生产的SIMOREGDC Master 6RA70全数字直流调速装置,并设计了该调速装置的启动操作步骤及参数设置。完成了该系统的远程监控功能设计,大大方便和简化了对试验水池拖车的控制。对全数字直流调速控制系统进行了EMC设计,提高了系统的抗干扰能力。本文最后通过数字仿真得到了该系统在常规PI控制器和模糊自整定PI控制器下的控制效果,并给出了系统在现场调试运行时的试验结果波形。经过一段时间的试运行工作证明该系统工作良好,达到了预期的设计目的。

提升装置在工业中应用极为普遍,其动力机构多采用电液比例阀或电液伺服阀控制液压马达或液压缸,以阀控马达或阀控缸来实现上升、下降以及速度控制。电液比例控制和电液伺服控制投资成本较高,维护要求高,且提升过程中存在速度误差及抖动现象,影响了正常生产。为满足生产要求,提高生产效率,需要研究一种新的控制方法来解决这些不足。随着科学技术的飞速发展,计算机技术在液压领域中的应用促进了电液数字控制技术的产生和发展,也使液压元件的数字化成为液压技术发展的必然趋势。本文以铅电解残阳极洗涤生产线中的提升装置为研究

对象,采用电液数字控制方法来实现提升装置的速度控制。论文首先对现有数字阀的种类及优缺点、提升装置的机械结构及工作原理进行分析,选择液压马达作为液压控制系统的执行元件,并选择自带压力补偿装置的数字方向流量阀来控制液压马达的转速和旋转方向,应用速度反馈、微机控制,设计完成了电液数字速度控制系统。该系统由数字阀步进电机实现数/模信号转换,省去了数/模转换装置,简化了液压控制系统结构。接着建立了电液数字速度控制系统的数学模型,采用特征方程根法和频域分析法来判断闭环系统的相对稳定性,并应用MATLAB/Simulink仿软件对控制系统进行仿真,在仿真基础上增加PID校正环节,以保证提升装置速度控制系统的稳定性及快速性,实现速度的准确控制。设计分析表明,在提升装置的速度控制系统中,采用电液数字控制技术是可行的,它可使提升速度稳定,且速度响应较快,理论上可以实现零速度误差,从而为铅电解残阳极板洗涤生产线提升装置的速度控制系统设计提供一种较好的控制方法,为提高生产效率奠定了一定的理论基础。

Hydraulic control and transmission technology has become an important technology of industrial automatism, and it is the key component of mechanic-electronic. The electro-hydraulic control is one of the most vivid branches of this technology. Proportional unit do not need a high requirement of the clearness of media but rather than cheaper, and the static and dynamic responding supplied can meet the using requirements in most industrial fields, and in some fields is no worse than servo valves. The Proportional control technology has a broad prospect in industrial application. However, at present the constructing of closed loop control system using proportional electro-hydraulic control valve is not very frequent in engineering applications. Because its designing theory is not very satisfied by normal use, and it needed to research further . So, the research to this proportional closed loop control system has an important theory value and application meaning.This paper takes Tin earphone, which is the main equipment in Copper electric-anode automatic product line, as research object. Based on the analysis of each composites of Tin , earphone device, it analysis first the key part Milling tool’s geometrical parameters, structure and manufacturing abilities. And an experiment is also taken. With the electro-hydraulic proportional directional restricting flowing valve, pressure-reducing valve, DC line speed measuring sensor etc, the electro-hydraulic proportional closed loop speed control system is designed, and the speed of the longitude feeding equipments of Tin earphone can be controlled, This paper analyzes the compositing usage of several hydraulic valve thoroughly, construct with emphasis the mathematic model of electro-hydraulic proportional closed loop speed control system with pressure difference compensation. Using the computer engineering software, it analyzes the system and its component’s static and dynamic performance, and designs a reasonable corrector , so that the performance of the system designed can fit the application producing requirements better |

. Trailer of towing tank is the basic equipment which is used for performance test of ship, and which role is to drag ship model or others for uniform motion in the tank, to measure the relevant performance parameters of ship after speed stable , to prediction and validation of the merits or inferiors of hull form design . As trailers uniform model accuracy directly affects the velocity and the accuracy of test results, which must be equipped with good speed control system which have high precision and immunity in order to ensure tow-speed precision movement. The main task is control system design and research of trailer of towing tank fully digital DC converter control system.It detailed description and analysis the principle of trailer of towing tank in this paper, and in conjunction with the control system performance requirements identified by four DC motor as a four wheel drive motor. Designing of the current loop, double loop speed ring of DC speed control project, and using the torque control mode from the effective solution of the four trailers on the DC drive motor theoretical speed synchronization and load balancing, and other issues. As trailers often repeated in orbit for the campaign drive system must be reversible speed control system should be adopted. It is focused on the reversible logic without circumfluence speed control