1. The driving principles and methods of step motor are introduced in this article and the stepmotor driver circuit is increasingly designed.
   阐述了步进电机驱动原理和方法,并设计出了一种步进电机的驱动电路。
2. The method of calculating microstepping currents for variable reluctance stepping motor with equal microstep angle was described when motor torque characteristics were sinusoidal shapes.
   摘要针对反应式步进电动机的正弦转矩特性，介绍了等步距角细分电流的计算方法。
3. Software subdivision and "virtual frequency conversion" technology were adopted in this solution, which realized multigrade, adaptive subdivided drive in operation of stepping motor.
   该方法采用软件细分、“虚拟变频”技术，实现了步进电动机多档位、带电自适应细分驱动。
4. 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.
   双回转机构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构成脉冲分配器。

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