系统采用双闭环控制，内环采用电流负反馈对电机转矩进行调节；
Two closed loops are constructed in the control system; the inner loop is currentfeedback that is to adjust the torque of the motor.
由于采用了电流负反馈控制方式，制动力矩的大小可根据需要进行控制。
Due to electric current negative feedback control, the intensity of braking torque can be controlled as it is needed.
首要的，你不能把电压负反馈功放机改成电流负反馈，几乎没有办法那么做。
First of all, you cannot turn a voltage feedback amp into a current feedback amp. there is just no way to do that.
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