To study the effect of rotor static eccentricity on the NVH performance of an electric drive assembly,an elastic multi-body dynamic model of a certain electric drive assembly is built,and the vibration velocity of the shell surface is computed,which is in good agreement with the test results.The electromagnetic excitation loads generated by different static eccentricities of the rotor is apply to the dynamic model to evaluate the impact of rotor eccentricity on the dynamics and NVH performance of the electric drive assembly.The results show that the rotor eccentricity not only changes the dynamic performance of the motor itself,but also affects the dynamic behavior and NVH performance of the entire electric drive assembly;with the increase of eccentricity,the load on the rotor bearing and the left end bearing of the input shaft of the reducer deteriorates significantly,and the transmission error of the gear and the load distribution factor of the tooth surface increase,which means that the meshing state of the gear deteriorates.
关键词
电驱/弹性多体动力学/静偏心/电磁激励/传递误差/载荷分布系数/振动
Key words
electric drive/elastic multi-body dynamic/static eccentricity/electromagnetic excitation/transmission error/load distribution factor/vibration
维普
万方数据