sine-wave current meaning in Chinese

正弦电流

For the bldcm which has a general crest width of the back - emf waveform , two kinds of torque ripple conditions when drived by sine - wave current as well as by square - wave current are deduced based on the mathematical models . in addition , a comparison is carried out between these two conditions , which indicates that sinusoidal current driving is more favorable to minimizing the torque ripple when the crest width of the back - emf waveform is less than a certain value
阐述了抑制齿槽转矩措施对反电动势波形的影响，利用无刷直流电机的数学模型推导并比较了任意平顶宽度梯形波反电动势在正弦波和矩形波两种电流驱动下的电磁转矩脉动情况，得出在梯形波平顶宽度减小到一定数值后采用正弦电流驱动更有利于减小电磁转矩脉动。