The overall design scheme is researched. The hardware of current detection module, motor speed and location detection module and PWM output and fault input module is introduced in detail.
对系统总体设计方案进行了研究分析，硬件设计中详细介绍了控制回路的电流检测模块、电机转速和位置检测模块、PWM输出和故障输入电路。
It can obtain the improve of power factor of the input motor power, and can lighten its capacity.
可实现电机输入电源功率因数的改善，减轻其容量。
This method changes the input power of the motor.
此种方法改变电动机的输入功率。
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