commutation angle造句

• Secondly , the effects of the crest width of the back - emf waveform to the torque ripple in the 120 ? conduction mode are analyzed , among which the effects of the advance commutation angle to the torque ripple are quantificationally analyzed for the bldcm drives whose back - emf waveform crest width is less than 120 ? ,
  其次分析了120导通方式下反电动势平顶宽度对转矩脉动的影响，对于平顶宽度小于120电角的非理想梯形波反电动势，定量分析了换相超前角对换相转矩脉动的影响。
• For the bldcm which has a pseudo - sinusoidal back - emf waveform , this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple . the main aspects for the implementation of this method are analyzed , including the initial orientation of the voltage vector , reasonable choice of the impedance angle and the advance commutation angle , and estimation of the successive rotor positions
  针对反电动势类似正弦的准正弦波反电动势无刷直流电动机，本文提出一种基于六个离散位置信号的自同步svpwm (电压空间矢量法)控制方法，用以削弱电磁转矩脉动，分析了实现这种方法的主要控制环节，包括起动时电压空间矢量的初始定位，阻抗角与电流超前角的合理选择以及连续转子位置的估计等。