It features new type stepmotor control system and real metering mechanism adjustable without shutdown the machine.

采用新型步进电机调整机及真正不停机调整计量机。

The driving principles and methods of step motor are introduced in this article and the stepmotor driver circuit is increasingly designed.

步进电机驱动理和方法,并设计种步进电机的驱动电路。

To control stepping motors, the balance bridge power drive circuit is made up by TDA1521 integrated audio power amplifier, the pulse allotter is made up by the parallel ports of computer and latches.

双回转机的步进电机控制电路由TDA1521音频集成功率放大器组成平衡桥式功率驱动电路，由计算机并行口经过锁存器成脉冲分配器。