English translation for "bemf"

反电动势

Related Translations:

bemf back electromotive force:  反电动势

Example Sentences:

	1.	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。
	2.	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。
	3.	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。
	4.	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。
	5.	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。
	6.	Then one of the methods of rotor position detection - bemf zero crossing point detection is explained in detail . in succession , the chapter dissertates the method of measuring phase voltage and supply voltage , and analyses the error of rotor position using this method 对转子位置检测方法中的反电势过零点法作了比较详细的介绍，讨论了反电势法中相电压和端电压的检测方法，并分析了利用该方法时而产生的转子位置检测误差。
	7.	At first , the dissertation analyses the principles , the operation theory and the control techniques of bldcm ( brushless dc motor ) . then according to the different bemf of different bldc motor , the dissertation analyses the torque ripple in the bldcm with ideal 120 掳 trapezoidal waveform bemf and non - ideal bemf waveform respectively . further more the dissertation presents different novel control techniques of the torque ripple minimization in bldcm 首先，对永磁无刷直流电机的定义，工作原理，控制方法进行了分析，然后根据永磁无刷直流电机的反电动势波形的不同，对理想方波型无刷直流电动机的换相转矩脉动，非理想方波反电动势的无刷直流电动机的换相转矩脉动进行了详细的分析，并分别提出了不同的控制策略，对其换相转矩脉动进行抑制。
	8.	In this chapter , the method of bldcm rotor position detection is first discussed . then the principle and algorithm of bemf zero crossing point detection is explained . in succession , the chapter dissertates the software realization of the bemf zero crossing point detection algorithm , the software disturbance filter and the modification of phase displacement , and the software realization of commutation point 在这一章中，先简述了无刷直流电机的转子位置器检测方法；然后论述了反电动势过零检测原理和算法以及该算法的软件实现、软件滤波和相移修正、换相点的软件实现；最后对软件开环换相起动策略作了详细论述。
	9.	Regard how to structure the control system of sensorless bldcm with dsp - tms320f240 as the centre in this paper , the detailed argumentation course of the motor startup , bemf terminal voltage measurement and control strategy is given out , give and pay concrete details for the software and hardware realization and experimental result . in order to treat the bldcm control system with dsp clearly , the full paper divides into six chapters altogether : chapter one , introduceing the development course , the structure characteristic and operation principle , etc . of bldcm in the introduction ; chapter two , directed against the startup issue of bldcm , the chapter give and publish the rotor measure pulse orients technology for motor startup in detail ; chapter three , proceed with mathematics model of the bldcm , expounding the control schemes ; chapter four , two important devices introducing : dsp ( 240 tms320f ) and power invertor control chip ( ir2131s ) ; chapter five , give and publish the detail of hardwares of control system ; chapter six , by ccs ide of ti , realize the control schemes in the front chapters with software , offere the procedure flow chart of main subroutine and some key place of programming , the experiment result in addition 全文共分六章：第一章、绪论中介绍了bldcm的发展历程、电机本身的结构特点和工作原理等；第二章、针对五位置传感器bldcm的起动问题，文中详细给出了检测脉冲转子定位起动技术；第三章、从电机的数学模型入手，详细论述了反电动势端电压法和系统的控制策略；第四章、介绍了硬件实现中的两个重要器件： dsp ( tms320f240 )和功率管逆变器控制芯片( ir2131s ) ；第五章、详细给出了控制系统的硬件实现细节；第六章、利用ti提供的ccs集成开发环境，将前面章节的控制方案用软件加以实现，给出了主要部分的程序流程图和一些编程要点以及实验结果。
	10.	In the proposed technique the bemf waveform of bldcm need to be measured in advance at first , through computer simulation and frame transformation , the optimum q - axis current command is achieved . in order to minimize the torque ripple , the d and 0 - axis current command should be zero . furthermore , through reference frame transformation from dqo - axis to abc - axis , we can get the optimum current command in static abc reference frame 在这种控制方法中首先测量出电机的实际反电动势波形，然后通过计算机拟合和坐标变换，求得产生恒定电磁转矩所需的q轴电流，令i _ d ~ * = i _ 0 ~ * = 0 ，通过坐标变换，得到三相静止坐标系a - b - c下的参考电流i _ a ~ * , i _ b ~ * , i _ c ~ * ，利用电流滞环控制来产生pwm信号，由于这种控制方法中电流不会突变，从而可以较好的抑制转矩脉动。

Similar Words：

"bemer" English translation, "bemersyde" English translation, "bemesetron" English translation, "bemete" English translation, "bemetizide" English translation, "bemf back electromotive force" English translation, "bemfeita" English translation, "bemfeito" English translation, "bemi" English translation, "bemi concor import" English translation