DC motor fuzzyPID control system based on STM32

HUANG Ping, WANG Ying, JIANG Xianzhi

(Faculty of Mechanical Engineering & Automation, Zhejiang SciTech University, Hangzhou 310018, China)

Abstract: Aiming at the problem of that the high precision and high speed requirements in modern 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.

Key words: DC motor; fuzzyPID; speed regulate