基于SIMULINK的直流电机驱动控制

毕业论文（设计）题目：直流电机驱动控制

系别：物理与机电工程系

专业：电子信息工程技术

姓名: 卢碧华

学号： 20080623126

指导老师: 龚俊锋

摘要

随着汽车电子器件的飞速发展、车用电控单元(ECU)的日新月异，直流电机在汽车电器设备中的应用受到了越来越多的重视。直流电机具有寿命长、效率高等特点，且适合很多高档汽车。同时，车内环境的复杂很多机械安装的困难，在不宜安装转子磁极位置传感器的地方，必须使用无位置传感器策略驱动直流电机。本文将介绍一种基于Matlab/Simulink的直流电机的仿真方法。基于Matlab/Simulink，本文设计了一个直流电机的控制方案，详细阐述了直流电机的运行原理，并用Matlab/Simulink对其进行了仿真。实验证明，用Matlab/Simulink开发的平台能够有效地实现对直流电机的控制。

关键词： Simulink 直流电机脉冲宽度调制

abstract

Along with the rapid development of automobile electronic components, automotive electronic control unit (ECU) everchanging, dc motor vehicle electrical equipment in the application by more and more attention. Dc motor have a long life, the efficiency high characteristic, and suitable for many high-grade car. Meanwhile, the complex environment inside a lot of difficulties, machinery installation shoulds not be installed in the rotor position sensor's place, poles must be used for sensorless strategies driven dc motor. This paper will introduce a method based on Matlab/Simulink of dc motor of the simulation method. Based on Matlab/Simulink, this paper designed a dc motor control plan, this paper expounds the working principles of dc motor with Matlab/Simulink carries on the simulation. Experiments have proved that Matlab/Simulink development platform can effectively achieve the of a dc motor control.

keyword ：Simulink Pulse width modulation motor

目录

引言 ------------------------------------------------------------------------------- 4第一章直流电机的介绍------------------------------------------------------------- 5

1.1 无刷直流电机的工作原理---------------------------------------------------- 6

1.2直流电机的控制策略-------------------------------------------------------- 6

1.2.1调速控制------------------------------------------------------------- 6

1.2.2转速的测量原理------------------------------------------------------ 8

1.2.3直流电动机转速控制系统的工作原理---------------------------------- 9第二章电机及控制系统仿真模型的建立 -------------------------------------------- 10

2.1直流电机的物理模型------------------------------------------------------- 10

2.2电机模型的构成与建立----------------------------------------------------- 11

2.3 驱动控制模块------------------------------------------------------------- 11

2.4工作过程------------------------------------------------------------------ 11

2.5加法【求和】放大器（summing amplifie）------------------------------ 13

2.3.1PI控制-------------------------------------------------------------- 13

2.3.2 PWM脉冲的生产-------------------------------------------------- 16第三章软件介绍------------------------------------------------------------------ 17

3.1 simulink简介------------------------------------------------------------- 17