But the differences of material? Construction and work condition of actuator lead to difficulty of setting up a standard mathematic model to precisely formulate the dynamic non-linearity character.

但由于驱动器的材料、结构和工作条件各异，所以关于动态非线性的定量描述难以建立一个统一的数学模型。

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Manual actuator stems are single lead stub acme threads with one piece heavy duty clip welded on.

手动执行器轴是单导短梯形螺纹，带一件重型焊接夹子。

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The existence of actuator saturation can debase the system dynamic performance, lead the closed-loop systems to an unstable state, and have a strong impact on system normal operation.

执行器饱和将使系统的动态性能降低，甚至导致闭环系统不稳定，严重影响系统的正常运行。

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