基于STM32的直流电机模糊PID调速系统研究

针对普通PID控制难以满足现代工业对直流电机控制高速度、高精度要求的问题,对直流电机及其控制系统进行了研究,设计了一种以STM32芯片为核心的自适应模糊PID控制直流电机调速系统。此调速系统通过采用模糊自适应PID控制算法改变PWM波占空比来实现系统灵活调速。在实验环境中,分别采用普通PID控制器和参数自适应模糊PID控制器来实现直流电机的调速系统,并通过主控芯片实时发送电机速度到上位机软件,绘制响应曲线。研究结果表明,模糊PID控制器在电机运行过程中,系统动态调节直流电机的PID参数,有效解决了传统PID整定困难的问题,并显著提高了电机的响应速度和控制精度。

DC motor fuzzy-PID control system based on STM32

Aiming at the problem of that the high precision and high speed requirements in modem industry couldn't be satisfied by classical PID controller,a DC motor control optimize solution was proposed in this paper.This solution was based on the fuzzy-PID algorithm which made use of the STM32 chip to design the DC motor speed control system.By using fuzzy-PID control algorithm,the duty ration of the PWM was changed to control the speed.During experiments,the speed which was controlled individually by classical PID and fuzzy-PID controller was sent to the computer software to draw response curve.The difficulty of parameter adjustment in classical PID controller was solved effectively by fuzzy-PID which could change the PID parameters by the system inputs during the processing.The results indicate that the application of fuzzy-PID controller can improve the response speed and precision of the DC motor significantly.