摘  要：介绍了单片机控制步进电机的一般硬件结构，在此基础上提出了三种步进电机升速的实现方法，最后分析了单片机定时误差对步进控制的影响，并得出了解决办法。
关键词：单片机；步进电机；升速曲线；定时误差

Abstract: The hardware structure of the control of step motor using single-chinp microcomputer was introduced in this paper.on this basis,put forward three ways to realize the speed-up of step motor.In the last,analysed the influence of timing error of shigle-chinp microcomputer in the control of step motor,then gave the way to solve this problem.
Key Words:Single-chip microcomputer;Step motor;Speed-up curve;Timing error