Closed loop configuration (CCL) is commonly used as a synchronous deploying control mechanism of appendages.
绳索联动机构（CCL）是航天器上最常用的附件同步展开控制机构。
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This paper gives out a simple and practical method of designing electrohydraulic servo system by using PID plus output feedback to make arbitrary configuration of pole-zero in closed-loop system.
The implementation of closed loop control, the configuration of the fuzzy controller, the design of fuzzy control regulation and the calculation of fuzzy control inquiring table are described.