A kind of the pulse control mode, the drive and motor closed loop, but not to the numerical control system, the feedback device, in a sense, can open loop control called the servo control.
一种采用脉冲控制方式，此种驱动器与电机闭环，但不反馈到数控系统，这种驱动器在某种程度上可称为开环控制的伺服控制。
At the same time using Holzer sensors will be converted into pulse frequency motor speed feedback to the MCU, realize the speed closed-loop control, to achieve speed detection.
同时利用霍尔传感器将电机速度转换成脉冲频率反馈到单片机中，实现转速闭环控制，达到转速检测目的。
Closed loop feedback adopts PID control rule to insure the stabilization of magnification times.
闭环反馈采用PID这种最广泛使用的控制规律，以保证放大倍数的稳定。
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