电流转速双闭环直流调速系统建模与仿真.doc

摘 要 电流电动机双闭环调速系统在工程中应用广泛，为了使系统具有良好的动态性能必须对系统进行设计。目前广泛应用的是基于一些标准形式进行设计的系统，其优点是简单方便。计算机仿真可以不运行实际系统，只要在计算机上建立数字仿真模型，模仿被仿真对象的运行状态及其随时间变化的过程。通过对数字仿真模型的运行过程的观察和设计，得到被仿真系统的仿真输出参数和基本特征，以此来估计和推断实际系统的真实参数和真实性能。本文介绍的是用一台1.1KW的电流电动机构成的电流双闭环调速系统。在理论的基础上设计了电流双闭环调速系统，并利用MATLAB中的SIMULINK工具箱，对电流调速系统进行仿真分析及参数调试。主要是从主电路设计、控制电路设计、数学模型的建立、系统的计算机仿真及调试等几个方面来进行设计和分析。 关键词：电流调速 双闭环系统 电流调节器 转速调节器 SIMULINK Abstract Current motor double closed loop speed regulation system is widely used in engineering. System design must be executed in order to make the system has a good dynamic performance. It is used widely is based on some standard forms of the system design, its advantage is easy and convenient. Computer simulation can not run real system, as long as the actual system is built on computer digital simulation model by simulation object, imitate the running status and changes with time process. Through the process of digital simulation model of observation and design, get simulation system simulation output parameters and basic characteristics, in order to estimate and inferred the real actual system parameters and the real performance. This paper designs current double closed loop speed regulation system composed with a 1.1 KW current motor. Based on the theory of design in the current double closed loop speed regulation system, simulation analysis and parameter system commissioning are completed using MATLAB toolbox for current speed simulink, which mainly concluding the main circuit design, control circuit design, establishing mathematics model, the system of computer simulation and debugging and so on . Keywords: Speed control of DC-drivers Double-closed-loop system Current regulator Speed regulator SIMULINK toolbox 目 录 摘 要 1 目 录 2 第一章 引言 1 第二章 调速方案的选择 3 2.0设计任务与分析 3 2.1调速系统总体设计 3 2.1.1理想的起动波形 4 2.1 主电路的方案选择 5 2.1.1可控整流器的选择 5 2.1.2可逆线路的选择 5 2.2控制电路的方案选择 6 2.3仿真工具的选择 6 第三章 主电路的设计 8 3.1设定数据 8 3.2电源的选择 8 3.3整流电路的选择 9 3.3.2整流元件的选择 10 3.3.3励磁电路元件的选择 10