无刷直流电机电流滞环控制策略仿真

江苏科技大学

本科毕业设计（论文）

学院电气与信息工程学院

专业电气工程及其自动化

学生姓名

班级学号

指导教师魏海峰

二零一四年六月

江苏科技大学本科毕业论文

无刷直流电机电流滞环控制策略

No current hysteresis loop control strategy of DC motor

江苏科技大学

毕业设计（论文）任务书

学院名称：电气与信息工程学院专业：电气工程及其自动化学生姓名：学号：

指导教师：魏海峰职称：副教授

摘要

众所周知，无刷直流电动机控制系统具有新型的调速系统。它具有结构简单、运行可靠、维修方便、调速性能好等优点。它采用电子换相装置代替传统的有刷直流电动机中的电刷，解决了电机在运行中由电刷产生的摩擦引发的一些不良影响。它运行性能高、控制方式简便、能够产生很好的经济效益、发展潜力巨大。由于电力电子技术的飞速发展，无刷直流电动机的发展也日益突出。现如今，无刷直流电动机在工农业生产以及人们的日常生活中获得了更为普遍的使用。由于工业生产对电动机控制精度的要求，无刷直流电机对其驱动系统稳定性与及时性的要求越来越高，这就要求我们采取合理的控制系统，在电动机的发展中是极为重要的。

本文采用PI控制器来调节速度，电流控制器采用电流滞环控制，从而形成无刷直流电动机电流滞环控制系统。本文中简单地描述了电机的基本结构，分析了电机的工作原理。在Matlab/Simulink环境下运用各个相关的独立功能模块来搭建无刷直流电机的数学模型，从而实现对无刷直流电动机电流滞环控制系统实行仿真。仿真和试验结果与理论分析一致，验证了该方法的合理性和有效性。此方法也适用于验证其他控制算法的合理性，为实际电机控制系统的设计和调试提供了新的思路。

关键词：无刷直流电机，MATLAB/SIMULINK仿真，电流滞环控制系统

Abstract

As everyone knows, the control system of Brushless DC motor with speed control system model. It has the advantages of simple structure, reliable operation, convenient repair, good speed performance etc. It uses electronic commutation device instead of the traditional electric brush DC motor, solved some adverse effects on the running of the motor by the brush friction generated by. Its high running performance, control mode is simple, can produce good economic benefits, a huge potential for development. Because of the rapid development of power electronics technology, the development of the Brushless DC motor is also increasingly prominent. Nowadays, the brushless DC motor in industrial and agricultural production and people's daily life was more widely used. Industrial production due to the motor control precision, brushless DC motor to drive the system stability and timeliness of the increasingly high demand, which requires us to take reasonable control system, the motor development is extremely important.

This paper uses PI controller to adjust the speed, current controller based on hysteresis current control, thus forming a brushless DC motor hysteresis current control system. This paper describes the basic structure of motor, analyzes the working principle of motor. In the Matlab/Simulink environment using the independent functional modules related to build the mathematical model of Brushless DC motor, so as to realize the simulation of Brushless DC motor based on hysteresis current control system. Simulation and experimental results agree with the theoretical analysis, verified the rationality and validity of the method. This method can be applied to verify the rationality of other control algorithms, and provides a new idea for the design and debugging of the actual control system of motor. Keywords:BLDCM; Matlab/Simulink simulation; hysteresis current;