bemf meaning in English
反电动势
Examples
- Aiming to minimize the torque ripple in condition of non - perfect bemf waveform , the dissertation present a optimum current tracking control technique
针对这种反电动势波形偏离理想波形的情况，本文提出了一种最优电流跟踪法来抑制转矩脉动。 - Then the thesis detailedly dissertates its research pivot : the software realization of sensorless commutation detection based on the method of back electromotive force ( bemf ) and open - loop commutation start - up
然后，详细论述了本文的研究重点：基于反电动势法的五位置传感器换相检测和开环换相起动的软件实现。 - The ideal bemf waveform of bldcm is trapezoid with 120 ! platform width . in the 120 conduction mode , the stator current is not ideal due to the stator inductance , and the torque ripple occurs
理想的永磁无刷直流电动机的反电动势的波形是120平顶的梯形波，在三相六状态120导通方式控制下，电流由于电机定子电感的存在而不是理想方波，因此产生了换相转矩脉动。 - The non - ideal bemf waveform of bldcm is often caused by two facts . one is that the platform width of bemf waveform is less than 120 ; the other is the cogging harmonics existed in the bemf waveform
非理想反电动势波形的无刷直流电机有两种情况，一种是反电动势的梯形波的平顶宽度小于120 ；一种是由于磁场分布受齿槽的影响，反电动势存在齿谐波，使其波形发生畸变。 - Based on " lagging 30 - a commutation " , the " lagging 90 - a commutation " method is brought forward to overcome the shortages existing in the traditional zero bemf , then the rang of a is expanded and the reliability of commutation is increased
针对该检测方法中的相位延迟角问题，在原有的“延迟30 ?换相原理”的基础上，利用“ 90 ?换相原理”对其进行改进，增加了相位移的取值范围，提高了电机换相时的可靠性。