【摘要】 本文应用分块矩阵理论将对称分支传动系统的扭振固有频率方程转化为二个低阶的固有频率方程,从而使对称分支系统的固有频率可以通过计算二个独立直串系统(简化直串系统和分支系统)的固有频率而得到。且证实了对称二分支系统不存在重频率,对称三分支及其L(>3)个对称分支的系统一定存在重频率。更多还原

【Abstract】 In the paper, the author using the vibration theory and the relative mathematical methods, discusses the characteristic of frequency distribution in driving system with symmetric branchs, and finds out that the natural frequencies of driving system with symmetric branchs can be determined by the natural frequencies of two equivalent and independent straight systems, that there is not any dual frequency in the symmetric two branch system, and that there must be the dual frequency in the symmetric three (or L>3) branch system.更多还原