摘要：为了以最短的时间使步进电机加速到最高运行频率并在转矩最大处升到高一级频率，以获得最大加速度，开发了机床进给系统用步进电机控制系统。换向时刻由增量式光栅尺的反馈信号决定，避免了复杂的计算，提高了系统的灵活性。硬件采用微处理器控制一片运动控制芯片的方式，使控制电路简单，可扩展性好。可广泛应用于机床数控化改造中及其他工业领域。
关键词：步进电机；运动控制；光栅信号；数控化机床；机床改造

Abstract: In order to speed up the step motor with the shortest time,do it in the point where the torque is largest and attain the biggest acceleration.The changing time was decided by the feedback signal of optical grating,which avoid the complex calculation and add the flexcibility of the system.Hardware use microcomputer to control a motion control chip.It make the circuit simple and good scalability.This system can be applied in machine tool NC transformation.
Key Words: Step motor;Operation control;Signal of optical grating;NC machine tool;Machine transfor mation