pulsation torque 脉动转矩
However, the waveforms of motor currents are difficult to control. The harmonic components of the current will produce torque pulsation, additional losses and some EMI problems.
电压源方式主回路比较简单，但电流波形难以控制，且谐波所带来的转矩脉动和损耗比较大，EMI问题难以解决。
参考来源 - 电流源型永磁电机控制方法仿真研究·2,447,543篇论文数据，部分数据来源于NoteExpress
But the BLDCM has the disadvantages of torque pulsation, which is in the way of achieving accurate position and speed of higher performance.
但是，无刷直流电动机运行中存在转矩脉动问题，对实现更精确的位置和更高性能的速度控制有极大影响。
From the basic operation principles of the permanent magnet brushless DC motor, this paper analyses the producing reasons of torque pulsation and establishes the mathematical model.
本文从永磁无刷直流电动机的基本工作原理出发，分析了引起转矩脉动的原因并建立无刷直流电动机的动态数学模型。
At the same time torque pulsation in circuit commutation is analyzed and researched chiefly, and overlapping commutation technology is offered in order to reduce this torque pulsation.
同时，着重对电流换相时所引起的转矩脉动进行了研究，发现采用重叠换相技术可减小这种转矩脉动。
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