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. In this chapter, the method of BLDCM rotor position detection is first discussed.
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。
参考来源 - 基于DSP的无刷直流电机数字控制系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
ObjectiveTo observe the effect of bionics pulsed electromagnetic fields (BEMF) on the biomechanical property of ovariectomized Wistar rats.
目的观察仿生脉冲电磁场(BEMF)对去卵巢大鼠腰椎和股骨生物力学性能的影响。
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。
Conclusion BEMF preventive therapy is effective in preventing the BMD decline in Wistar rats. BEMF is more effective than calcitonin as the therapy time prolongs.
结论BE MF有预防骨密度下降的作用，并随着预防治疗时间的延长，BEMF的预防作用较降钙素有更显著的效果。
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