摘  要：结合实际项目，简述了电机调速与变频器工作原理。基于变频器控制回路外部接口和MC68HC908GZ16单片机，设计了交流异步电动机远程实时调速系统。试验结果表明，设计方法可行，满足使用要求。
关键词：感应电动机；调速系统；变频器；单片机；实验

Abstract: Combined with an implementation case,the principle of motor speed regulation and frequency converter were briefly described.Based on the control circuit of frequency converter and MC68HC908GZ16 microcontroller,a remote real-time speed regulation system of AC asynchronous motor was desiged.The test result indicates that the design is feasible.
Key Words: Induction motor;Speed regulation system;Frequency converter;Microcontroller;Experiment