下载后可任意编辑基于 ARM 的 PWM 直流调速系统的讨论文亚凤 （华北电力大学电气与电子工程学院，北京，102206）摘要：本文设计的直流 PWM 调速系统采纳的是调压调速，整个系统采纳了转速、电流双闭环控制结构。系统主电路采纳大功率 GTR 为开关器件、H 桥双极式电路为功率放大电路的结构, 即可完成不可逆调速同时也可完可逆调速。PWM 调制部分是在 ARM 嵌入式开发平台之上，运用 C 语言编程控制 S3C2410X 芯片的定时器来产生两路互补的宽度可调的矩形波。通过调节这两路波形的宽度来控制 H 电路中的 GTR 通断时间，以达到调节电机速度的目的。增加了系统的灵活性和精确性，使整个 PWM 脉冲的产生过程得到了大大的简化。关键字：双闭环系统，脉冲宽度调制，ARM 嵌入式系统，S3C2410X 芯片PWM motor speed control system Based on ARMWen Yafeng School. of Electric and Electronical Engineering, , NCEPU(BJ) 102206Abstract:The PWM motor speed control system in my project is designed with the mode of voltage control, and the entire system is based on the double Closed-Loop structure.The main circuit of the system is made up of large power GTR which is used as switch and bipolar H-bridge circuit which is used as power amplifier. Such kind of implemetation can perform irrevertable or reverable speed control. The part of PWM is built on the platform of ARM embedded system. It can generate two adjustable impulses which can complement each other through the control of the timers in S3C2410X chip by C Programming. In order to control the open or close time of GTR，the width of two channel impulses are adjusted. As a result, the the speed control of motor can be reached. Such implemetation increas the flexibility and precision of the system, so the procedure of producing PWM pulses is simplfied in great degree.Key Words: double closed loop governing systems, pulse width modulation (PWM), ARM embedded system, chip S3C2410X1 引...
