说明：  该模型考虑时变啮合刚度、传递误差、齿侧间隙、齿轮偏心及齿面摩擦等非线性因素，应用Runge-Kutta算法对系统的微分方程进行求解，结合系统时域图、FFT频谱图、相图、Poincaré截面图和三维频谱图，分析齿侧间隙与偏心量对系统响应的影响。
(Considering the time- varying mesh stiffness,transmission error,backlash,gear eccentricity,gear friction and coupled bending-torsion of the system,the Runge-Kutta method is employed for solving the differential equations of the gear-rotor-bearing transmission system.)