The vibration transmissibility of the vibration isolation system under complex vibration environment with the floor disturbance and the direct disturbance is defined and studied.

定义和研究了在基础干扰和直接干扰同时作用的复杂环境下隔振系统的振动传递率问题；

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But in this system, the cutting force is directly imposed on the system and is a direct disturbance. This may affect the control system to be unstable and to reduce its positioning accuracy.

但加工过程中切削力会对系统造成直接干扰引起系统不稳定和定位精度下降。

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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.

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。

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