摘要： 介绍了交流电机调速实验系统中PC 端监控软件的设计方法。该监控软件实现了在PC 上实时地、可视化地控制电机的运行。它能够通过串口与DSP 程序通信。在系统运行前可以设置串口参数及DSP 参数，运行中可以接收DSP 发送来的实验数据，运行后可以方便地显示和保存实验数据。通过实验测试表明，设计的PC 端监控软件功能完备、界面友好、操作方便，并具有一定的通用性。

关键词: 电机调速；监控软件；程序设计；串口通信

Abstract: This paper designes monitor software in experimental variable-speed system of AC motors. The monitor software realizes the real-time and visual control of AC motors through PC operation. It communicates with DSP program through serial port. It can setup the serial port and DSP parameters before the system’s start-up, and receive experimental data from DSP when the system is running. In addition, it can display and save experimental data conveniently. Finally, experimental test is carried out. Experimental results verify that the proposed monitor software has powerful and general-purpose functions, and friendly user interface

Key words: Motor variable-speed; Monitor software; Program design; Serial port communication