简要阐述提升装置液压系统组成及采用力-位置反馈控制思想实现工件的移动和定位。

The article describes composition of hydraulic control system of lifting device, and adoption of moment-location feedback control to perform displacement and positioning of work piece in correct way.

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电动控制的流量控制阀可实现流量的连续控制，嵌在阀中的一个发射节流器能够精确定位并实时反馈发生堵塞位置的信息。

The electric flow control valve provides continuously variable flow control. Embedded in the valve is an absolute position sensor that sends real-time feedback about the choke's exact position.

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并较详细地介绍了行程末端位置反馈定位的电控原理和设计思想。

Also the principle and design method of the position feedback at the end of stroke are introduced in more detail.

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