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
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。
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。
In this paper, nine additives with different structural characteristics and eight kinds of coal were selected to investigate the effect of structural characteristics of additives on the zeta potential of coal water slurry.
选用了变质程度不同的8种煤和三类共9种分子结构不同的阴离子型添加剂,详细考察了添加剂的结构特征对水煤浆动电势的影响规律。
The change of zeta potential of coal water slurry (CWS) before and after ultrasonic irradiation was investigated.
选用大同煤和神木煤制备水煤浆 ,考察了超声辐照前后水煤浆浆体的动电势变化。
Values of electromotive force of the cell without liquid junction Li-ISE│Li2B4O7(mA)(aq.
具体方法为考虑了该体系在不同的总硼浓度范围H3BO3,B(OH)-4,B3O3(OH)-4和B4O5(OH)42-四种含硼化合物的存在以及各硼化合物间的化学平衡,以修正了的Pitzer渗透系数方程和活度系数方程为基础,对该体系的等压法和电动势法研究结果进行最小二乘拟合,拟合的标准偏差为0。
XPS study confirms that the adlayer contains only silver atoms, whereas the electromotive force measurement indicates large stability constant.
进一步用电动势法测定了[(dptap Ag)2](NO3)2的解离常数,并推测有序银原子层系与金表面相互作用从而诱导配合物的离解及Ag+的还原而形成。
The Research on the EMF of Disc Brushless DC Motor
盘式无刷直流电动机反电动势的研究
A Detection Method of Zero Crossing of Counter Electromotive Force of BLDC Motor
一种BLDCM反电动势过零检测方法
The Research on the Control of BrushLess Direct Current Motor Based on Back-EMF;
基于反电动势法的无刷直流电机的控制研究
Back electromotive on preparation of Al-Ca alloys by molten salt electrolysis
熔盐电解法制备铝钙合金中的反电动势
Zero-crossing detection and phase compensation of BEMF in the sensorless control of BLDCM
无刷直流电机反电动势过零检测及其相位补偿
Study on Self-detecting Angular of Interior Permanent Magnet Synchronous Machine by Estimating the Extended Electromotive Force
IPM同步电机扩展反电动势转子自测角研究
Study on the Control System of"Anti-EMF"Brushless DC Motor
“反电动势法”永磁直流无刷电机控制系统设计
Study on Back-EMF Method and Starting Technique of BLDCM;
无刷直流电动机的反电动势换相及起动方法的研究
Design of BLDCM Control System without Position Transducer Based on Back EMF
基于反电动势法BLDCM无位置传感器控制系统设计
Detection of Rotor Position Using the Harmonic Back EMF of Hybrid Step Motor
利用混合式步进电动机谐波反电动势实现转子位置检测
Commutation Research on Brushless DC Motor Based on Back Electromagnetic Force Position Detection;
基于反电动势法位置检测的无刷直流电动机换相研究
Study of Restraint Method for Torque Ripple of Brushless DC Motors with Non-ideal Back-EMF
非理想反电动势的无刷直流电机的转矩脉动抑制策略研究
PWM Speed Control System of DC Motor Based on Speed Measuring by Counter Electromotive Force
基于反电动势测速的直流电动机PWM调速系统的设计
Simulation and research on torque ripple reduction for BLDC motors with non-ideal back EMF waveforms
非理想反电动势无刷直流电机的转矩脉动抑制仿真研究
Using Majority Function to Realize Sensorless Brushless DC Motor Control with Back-electromotive Force Filtering
用择多函数实现反电动势滤波的无传感器无刷直流电动机的控制
Analysis of the Rotor Position Error of the Zero-Crossing Method for Brushless DC Motors
反电动势法无刷直流电动机位置检测误差分析及补偿
THE CORRESPONDING RELATION BETWEEN A CELL REACTION AND THE CELL OR EMF
电池反应与电池及电动势的对应关系
An electric current varies directly as the electromotive force and inversely as the resistance.
电流的大小与电动势成正比，与电阻成反比。