Since the gear engagement is a common coupling form between rotors, the transfer matrix of skew gear engagement in global coordinate system is deduced based on the concept of coupling element.

齿轮啮合是转子之间常见的一种耦合形式，根据耦合单元的概念，推导了在全局坐标系下斜齿轮啮合的传递矩阵。

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By using Frobenius matrix, this paper presents the common solution in another form to linear recurrence formula with constant coefficients.

对若当标准形及所使用的可逆矩阵的计算加以简化，并借助若当标准形给出线性递推关系式求解的一般方法。

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