作者:吴 石， 李怡鹏
Authors:Analysis of the Influence of the Unbalanced Electromagnetic Force of the In-wheel Motor on the Vertical Vibration of the Vehicle摘要:摘 要:为研究轮毂电机偏心对车辆垂向振动的影响，首先建立1/4车辆垂向振动模型；然后建立偏心引起的不平衡电磁力模型，仿真分析轮毂电机的不平衡垂向电磁力，研究电机偏心引起的垂向振动；最后通过仿真和实验得到轮毂电机驱动的电动汽车在不同偏心时，在不平衡电磁力和路面输入双重激励下的垂向振动情况，分析不平衡电磁力对车辆垂向振动的影响。仿真和实验结果表明，轮毂电机偏心引起的振动会随着偏心距和轮毂电机转速增大而增大，最大车速80km/h下，0.12mm偏心轮毂电机比0.1mm偏心轮毂电机振动加速度峰值增加了36.1%，均方根值增加了15.4%。
Abstract:Abstract:In order to study the influence of the hub motor eccentricity on the vertical vibration of the vehicle, we first establish a 1/4 vehicle vertical vibration model, and then establish an unbalanced electromagnetic force model caused by the eccentricity, simulate and analyze the unbalanced vertical electromagnetic force of the hub motor, and study the vertical vibration caused by the motor eccentricity. Finally, through simulation and experiments, the vertical vibration of the electric vehicle driven by the wheel hub motor under the dual excitation of unbalanced electromagnetic force and road surface input is analyzed, and the influence of unbalanced electromagnetic force on the vertical vibration of the vehicle is analyzed.Simulation and experimental results show that the vibration caused by the eccentricity of the hub motor will increase with the increase of eccentric distance and the speed of the hub motor, and the maximum speed of the vehicle is 80km/h, the 0.12mm eccentric hub motor increases by 36.1% compared with the peak vibration acceleration of the 0.1mm eccentric hub motor, and the rms value increases by 15.4%.

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