指命发生器及逻辑控制部件，常常是工业无触点程序控制系统(或静止开关控制系统)中的主要组成部分。
The instruction generator and logic control units are the chief components of the industrial contactless programmed control system (or static switching control systems).
从这个意义上讲，“threshold”意味着一种临界点，就像一个开关，使得FM无线电信号从静止状态到播放音乐状态(或者，也可能是一个广告)的忽然变化。
In this sense threshold means a sort of transition point like the threshold when an FM radio signal breaks through from being just static to being music (or maybe an AD).
根据相迹方程和李亚普诺夫直接法提出了在大扰动下控制静止补偿器的开关线。
On the basis of the trajectory on the phase plane and Lyapunov' s direct method, switching line is introduced for controlling static compensator under large disturbance.
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