，采用单片机AT89C51和脉冲分配器PMM8713控制步进电机在三相六拍工作方式下的启停控制，正反转控制和加减速控制，以实现基于步进电机的XY工作台两点间的位移控制。-Adopts single-chip microcomputer AT89C51 and pulse, PMM8713 splitter control step-motor in three-phase six-step clap work under the way of controlling, positive &negative deceleration control and control, so as to realize the stepper motor based on the displacement worktable XY between two points.