然后从理论上研究了电流传感器测量误差和非正弦磁场分布对永磁同步电机转矩波动的影响。
Then, the effects of current sensor measurement error and non-sinusoidal magnetic field distribution on motor torque fluctuation are theoretically investigated.
永磁无刷电机中，平行充磁的2极磁环产生的气隙磁场是正弦分布的。
In a permanent magnet brushless motor, airgap field excited by a 2-pole magnet ring with parallel magnetisation is sinusoidal.
通过分析得到整个电机电磁场的分布及波形近似为正弦的气隙磁感应强度，分析结果有助于对电机进行优化设计和控制。
A approximately sine waveform air-gap magnetic field density can be gained based on the analysis of the whole electromagnetic field. The results are helpful to optimization design and control.
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