关键词: 有刷直流电机, 动平衡去重技术, 电磁振动, 齿槽转矩, 绕线分布

Abstract: In order to study the negative impact of rotor dynamic balance de-weight process on motor vibration, a 4-pole 10-slot brushed DC motor was taken as the research object. The vibration level and cogging torque of the de-weighted and weighted balancing motors were compared, and it was found that the 4th tangential vibration and cogging torque of the motor significantly increased when using the de-weight technology. The finite element method was used to analyze the mechanism of the influence of the de-weight technology on the motor cogging torque, and the influence of different deweighted cutting amounts and cutting positions on the cogging torque. A equilibrium winding distribution method was proposed to reduce the initial unbalance of the rotor, thereby reducing the weight of the rotor balance correction and reducing the negative impact on the motor magnetic field and vibration.

Key words: brushed DC motor, dynamic balance de-weight technology, electromagnetic vibration, cogging torque, winding distribution