步进电机运行系统控制设计,步进电机驱动原理是通过对它每相线圈中的电流的顺序切换使电机作步进式旋转，驱动电路有脉冲信号来控制，所以调解脉冲信号的频率变可以改变步进电机的转速，因此微电脑控制步进电机最合适。-Stepper motor to run system control design, the principle of stepper motor driver through every phase of its current coil in the sequence so that th