由于气体力是非线性的，而且压缩机的机械系统和电磁系统是相互耦合的，仅仅利用非线性模型进行整个系统的动力学分析是很复杂的。

Because the gas force in the models has nonlinear characteristics, and moreover the mechanical part is coupled with the electromagnetic part, dynamics analysis of the whole system is very complicated.

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