2) Trapezoidal-shaped back-EMF
梯形波反电动势
3) back electromotive force
反电动势
1.
Calculation and simulation of back electromotive force and cogging torque for permanent magnet BLDC motor;
永磁无刷直流电动机反电动势及定位力矩的计算与仿真
2.
Back electromotive force was measured by continuous pulse-computer and the influencing factors for back electromotive force and current efficiency were studied in detail.
研究了在SrCl2-SrF2-BaF2的电解质体系中熔盐电解法制备高浓度Al-Sr合金,采用连续脉冲-计算机法测定电解过程的反电动势并且对反电动势和电流效率的影响因素进行了详细的研究。
3.
This method directly extracts the true back electromotive force(EMF) zero-crossing point by detecting the voltage difference between the floating phase terminal and the midpoint in the DC link.
为了实现无刷直流电机的无位置传感器控制,提出了一种新颖的转子位置信号检测方法,该方法通过比较逆变器直流环中点电压和电机断开相绕组端电压的关系,直接检测到断开相绕组反电动势的过零点,再将该过零点延迟30°电角度即可获得无刷直流电机绕组换相所必须的转子位置信号。
4) back EMF
反电动势
1.
A Novel Scheme of Sensing Rotor Position of BLDCM Based on the Zero-Crossing of Back EMF
反电动势过零检测无刷直流电机转子位置新方法
2.
The back EMF in the process of electrolysis is measured by continuous pulse-oscillograph.
SrCO_3为原料熔盐电解法生产Al-Sr合金新工艺, 采用连续脉冲-示波器法测定电解过程的反电动势。
3.
When the transited current arrives at a certain extent, cell voltage and back EMF will be increased gradually with increasi.
在讨论铝钪合金各种生产方法的基础上 ,研究了熔盐电解法生产Al Sc合金的工艺条件·结果发现 ,随着电流密度的增加 ,合金中钪的质量分数逐渐增加 ,最高可达 1 5 % ;但随分子比的升高 ,Sc的质量分数却有所下降·当通过的电流一定时 ,随着电解过程的延长 ,槽电压和反电动势逐渐升
5) back-EMF
反电动势
1.
One kind of sensorless control system for brushless DC motor based on DSP was introduced and the principle of back-EMF zero-crossing detection and realization method was discussed in detail.
介绍了反电动势过零位置检测的原理及实现方法,并采用了数字式转速、电流双闭环控制。
2.
The structure and characteristic of the band-pass filter are analyzed,and parameters of components are calculated,and a Back-EMF zero-cross detection circuit for BLDC motor sensorless control is designed in this paper.
分析了带通滤波器的结构、幅频和相频特性,计算获得了符合要求的参数,设计了由带通滤波器构成的无刷直流电动机无位置传感器控制用反电动势过零检测电路,并给出了该检测电路的简化型式。
3.
This paper summarizes the principle of sensor-less BLDCM driving,and the method for fetching the rotor position and speed by zero-crossings of the non-conducted phase s back-EMF.
分析无刷直流电动机(BLDCM)无位置传感器控制的基本原理,介绍应用非导通相反电动势过零点检测转子位置及转速的方法。
补充资料：反电动势
电路中存在的跟外加电压方向相反的电动势。如电动机转动时，电枢线圈中所产生的与外加电压方向相反的感应电动势。电解槽在工作时也存在反电动势，对电解槽所加电压必须大于其反电动势才能使电解槽正常工作。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条