Abstract：Considering the time-varying speed working conditions, the dynamic model was established by lumped-parameter method of planetary gear transmission system. The time-varying meshing stiffness was transformed into the function of meshing frequency by Fourier series. According to the simulation curve of rotation speed, the effect of variable speed on the time-varying meshing stiffness of gear pair was analyzed. The method of Runge-Kutta was applied to calculate the dynamic response of gears in transmission system. The experiment signal was analyzed based on the wind turbine gear box test bed, and the established dynamic model of wind turbine planetary gear under time-varying speed was verified.
2018, Vol. 39 
