MATLAB无刷直流电机的双闭环控制系统仿真
毕业论文关键词：无刷直流电机、双闭环控制、仿真、MATLAB
Abstract With the progress of social industrial technology, the speed of the development ofmotor is very fast and it has more and more types. At the current market,the synchronousmotor, induction motor and DC motor are the most common and main motors. These threekinds of motors have their own advantages and disadvantages, compared with the ACmotor, the traditional DC motor’s speed control performance is superior and smooth, but itis difficult to change and easy to produce sparks, it’s maintenance is difficult and expensive.Whether in industry or agriculture, it has been greatly restricted. In order to adapt to thedevelopment of industrial and agricultural areas, brushless DC motor came into being.The traditional DC motor is improved by using the new devices such as integratedcircuit and power electronic devices. Brushless DC motor not only has the advantage oftraditional DC motor but also has the advantage of AC motor, such as simple structure,reliable operation and convenient maintenance, etc. In other words, the advantages of DCmotor and AC motor is set in a body. Now, the brushless DC motor has been operating invarious fields. This paper is about the simulation of double closed loop control system forbrushless DC motor.In this paper,wo use the motor whose power is 2kw as the modle,first,we analyse the mathematical model of the brushless DC motor, using PID speed currentregulator to control Brushless DC motor double closed loop. Then programming C + +language on the base of setting the parameter, wiring diagram, designing schematic. At last,we conduct simulation experimental of the brushless DC motor by using PWM controltechnology in Matlab / Simulink, and debugging. The results show that the brushless DCmotor can work stably and safely under the control of double closed-loop system, it cankeep the static and dynamic characteristics of the best.
Key words: Brushless DC motor, double closed-loop control and simulation,MATLAB
目 录
第一章 绪论. 1
1.1研究背景1
1.3研究的目的及意义...3
1.4 主要内容的概括..3
第二章 无刷直流电机的原理组成、特性及数学模型..5
2.1无刷直流电机的原理介绍.. 5
2.2无刷直流电机的组成.. 5
2.2.1 电机本体...6
2.2.2 电子开关电路 7
2.2.3 位置传感器...8
2.3 无刷直流电机的运行特性.9