根据电火花加工原理，采用单片机形式,设计了一种电火花磨刀机床的电机控制系统。介绍了采样电路、磨刀电机变频调速电路和磨刀速度控制电路等硬件电路设计和系统软件设计，并对控制系统进行了功能和性能测试。测试结果表明:该电机控制系统能够满足磨刀机床对超硬材料的磨削加工要求。

According to the principle of electric spark processing, a motor control system for electric spark sharpening machine tools is designed by using single chip microcomputer. The hardware circuits including sampling circuit, variable frequency speed regulation circuit of sharpening motor and sharpening speed control circuit, and system software design are introduced. The function and performance of the control system are tested. The test results show that the motor control system can meet the requirements of the sharpening machine tools for the grinding of superhard materials.