基于PIC单片机的直流电机PWM调速系统

PWM Regulating Speed System of DC Motor Based on PIC Microcontroller

介绍了基于PIC16F877单片机构成的直流电机调速系统 ,电机控制芯片采用了L2 98芯片 ,该系统使用光电编码器作为检测传感器 ,通过PWM的输出信号实现对直流电机的调速。同时介绍PIC16F877单片机中与PWM相关的寄存器设置 。

A kind of speed regulation system for DC motor composed of PIC16F877 microcontroller and L298 was described. This system uses photoelectric coder as speed detecting sensor, uses digital PID control method, and uses PWM signal as control output to regulate DC motor speed. And the setting of relative registers of PWM regulating speed in PIC microcontroller was introduced. The hard circuit and software design were given.