Then, the reason of the commutation torque ripples is analyzed. The analytical expression of torque ripple is obtained.
转矩脉动解析表达式表明抑制换相转矩脉动的关键是保持非换相的电流不变。
参考来源 - 永磁无刷直流电机换相转矩脉动抑制的控制策略研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A commutation current prediction control scheme was proposed in brushless DC motor (BLDCM) to suppress the commutation torque ripples.
分析了永磁无刷直流电机换相原理，提出了一种换相电流预测控制方法以抑制换相转矩脉动。
Finally it is concluded that PWM-ON-PWM is the existing optimal PWM mode for reducing commutation torque ripples, and achieves this mode on condition of three position sensors.
最后得出对转矩脉动最优的斩波方式为PWM—ON—PWM，并在三个位置传感器的条件下运用位置预测法实现。
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