Closed-loop feedback

Closed-loop feedback the open-loop representation、“the closed-loop representation”具体怎么理解?看文献遇到三个概念,不是很理解,是最优控制方面的the open-loop representation、“the closed-loop representation”andthe optimal feedback closed-loop DC servomotors CLOSED LOOP CORRECTIVE ACTION FORM CLOSED LOOP CORRECTIVE ACTION PROBLEM SOLVING中文意思是什么? Closed-loop machining什么意思?闭环加工?怎样的算闭环加工呢? 英语翻译topping off the vehicle with fresh coolant in a closed loop 请问LTE中的MIMO模式主要是指哪些Single-antenna Port(port0);Transmit diversity;Open-loop spatial multiplexing;Closed-loop spatial multiplexing;Multi-user MIMO;Closed-loop Rank=1precoding;Single stream beamforming(port5).这些模式主要 Closed feedback翻译 send feedback Loop the loop中文翻译 Application of Velocity Profile Generation and Closed-Loop Control in Step Motor Control System这是一篇ieee里面的论文标题,软件就免了吧, 求这句话的结构分析Heat pumps circulate a fluid refrigerant that cycles alternatively from its liquid phase to its vapor phase in a closed loop 什么叫closed loop啊?除了电学名词“闭路”外还有什么引申含义吗?可是我看到它的情境很奇怪 是在一本美国参考书的页侧 Closed Loop 下面写的是The ACT(American College Testing)is a test of how well you take loop是什么意思 Loop梗是什麼?.. VB用法：while..loop loop..while loop..until until..loop