In order to meet the screw air compressor operation of the energy saving, there must be an efficient changespeedmotor drive.
为了满足螺杆空压机运行中的节能，必须有一种高效率变转速的驱动电机。
2
Step motor control, by pulse by changing the order of electricity can change the motor rotation direction, change the pulse frequency can change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
3
Stepping motor control by pulse, by changing the order of power to change the direction of rotation motor, change the pulse frequency may change the motor rotation speed.