PWM是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术,在直流电机控制等方面有非常广泛的应用,本设计以飞思卡尔系列单片机MC9S12XS128作为控制器,利用其内部的PWM模块,以及外部电机驱动芯片MC33886等元件实现直流电机调速系统的设计,具有设计简单、调速范围大、精度高等特点。
PWM is a very effective technology to control analog circuit by digital output of microprocessor.It is widely used in DC motor control and other aspects.This design uses Freescale MC9S12XS128 as controller,uses its internal PWM module and external motor driver chip MC33886 to realize the design of DC motor speed regulation system.It has the characteristics of simple design,wide speed range and high precision.
