介绍了一种基于S3C2410微控制器的直流电机调速系统。文章在介绍PWM调速原理的基础上详细说明了S3C2410的PWM发生器的结构特点及其使用方法，并详细分析了调速相关程序及调速系统的总体设计，实现了直流电机的变速转动以及正反转的互换-A DC motor speed control system based on the S3C2410 microcontroller. Article on PWM speed control principle based on the detailed descr iption of the the S3C2410 PWM generator structural features and methods of use, and a detailed analysis of the overall design of the program and governor of the governor system, variable speed rotation of the DC motor and Reversible interchange