逻辑无环流可逆直流调速系统设计.doc

毕业设计(论文) 题目名称 逻辑无环流可逆直流调速系统 系别 电气信息工程学院 专业/班级 自动化09101 学生 郑景辉 学号 指导教师（职称） 霍利敏  摘? 要 直流电动机具有良好的起制动性能，易于在广泛范围内平滑调速，在需要高性能可控电力拖动的领域中得到了广泛的应用。直流拖动控制系统在理论上和实践上都比较成熟，而且从反馈闭环控制的角度来看，它又是交流拖动控制系统的基础，所以首先应该掌握好直流系统。 从生产机械要求控制的物理量来看，电力拖动自动控制系统有调速系统，位置随动系统，张力控制系统，多电动机同步控制系统等多种类型，而各种系统往往都是通过控制转速来实现的，因而调速系统是最基本的拖动控制系统。 在许多生产机械中，常要求电动机既能正反转，又能快速制动，需要四象限运行的特性，此时必须采用可逆调速系统。而本文着重介绍应用广泛的“逻辑无环流可逆直流调速系统”的设计与仿真。 对于系统的设计，采用工程上对调节器的设计方法。而对系统的仿真，则采用MATLAB中的SIMULINK工具箱对模型仿真。 关键词：逻辑无环流调速，直流电机，MATLAB仿真 ABSTRACT The direct current electric motor has good starting and braking quality, and can be modulating smoothly and easily in a wide rang. It is used frequently in controllable electric drive with high quality. Direct current drives the control system in theoretic- cally quite to be all mature with the practice in, moreover looked from the feedback closed-loop control angle, it also is the exchange drives the control system the found ation, therefore first should grasp the direct current system. Looked from the production machinery request control physical quantity that, the electric power drives the automatic control system to have the speed control system, the position servo system, the tension control system, multi-electric motors synchronization control system and so on many kinds of types, but each kind of system often all is to achieve by controlling the speed. Through the speed control system is the most basic drives control system. In many produces in the machinery, the electric motor often is requested both to be able to reverse, and can fast apply the brake, to need four quadrants movements the char- acterristic, this time must use the reversible speed control system. This article introduced emphatically the application widespread logic does not have the circulation reversible direct current speed control system design and the simulation. For the system’s design, engineering design of the regulator