rotation speed closed-loop control 转速闭环控制
electrohydraulic speed closed-loop control system 电液闭环速度控制系统
electrohydraulic proportional speed closed-loop control 电液比例闭环速度控制
closed-loop speed control 闭环速度控制
closed loop speed control system 闭环控制系统
speed control of closed loop 闭环速度控制
Software of the drive and control system realizes the current and speed closed-loop control, which contain PI adjuster.
软件部分是主要是实现对直线电机电流和速度的双闭环控制，电流和速度的调节均采用PI调节。
Power braking is usually required when mine hoist is at reducing stage, but sPeed closed-loop control is difficultly realized.
交流矿井提升机的减速阶段，一般要求主要用动力制动，但速度闭环控制难实现。
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。
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