关键词: 减速电机, 多源激励, 多目标优化, 振动响应

Abstract: To address the vibration problem induced by multi-source excitations in a geared motor,a 36-slot / 42-pole geared motor is taken as the research object. The characteristics of electromagnetic excitation and gear meshing excitation,as well as their transmission paths within the module, are analyzed, and a vibration analysis model under motor and gear excitations is established. A genetic algorithm is employed to optimize both the motor and the gear train. On the motor side,parameter sensitivity analysis and multi-objective optimization are conducted to suppress radial electromagnetic force andtorque ripple. On the gear side,the meshing impact is reduced by optimizing the gear modification amount and modification length. The results show that,after optimization,the motor torque ripple is reduced from 3. 8% to 1. 2%,and the vibration acceleration of the planet carrier under rated operating conditions decreases from 389 mm / s²to 174 mm / s². This study provides a theoretical basis for the low-vibration optimal design of electromechanically coupled geared motors.

Key words: geared motor, multi-source excitation, multi-objective optimization, vibration response