查询词典 EMF

Bar at angle θand the direction of emf.

电流I距离r0，求棒中电动势

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.Then the thesis expounds the basic component parts,the basic running principle,the running characteristic and transfer function of the BLDCM.And then the thesis detailedly dissertates its research pivot: the simulation of BLDCM system in MATLAB based on the method of Back-EMF and the control system of Digital Signal Processor based on the method of Back-EMF.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

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。

First of all, the installation of EMF, generated during the installation process a password set operation to insert the disc, EMF detection site on the password, and enter the corresponding account, and then run the program to Magic.exe enter your password, this password is entered after EMF password.

首先安装EMF，在安装过程中生成一张密码盘，操作时插入该盘，EMF检测盘上的密码，并进入相应的账号，然后运行Magic.exe程序会要你输入密码，这个密码就是以后进入EMF的密码。

The Engelhard line of Glass Melter/Refiner Thermocouple Assemblies represent the cumulative benefit of more than 50 years of dedicated design and attention to detail in material selection, processing, and assembling, have been developed and established with campaign life as a goal while maintaining EMF

安格的玻璃熔窖/精炼机热电偶装配的生产线提出在材料选择，加工处理和装配等细节方面，专注设计和注意，积累了50多年的经验，EMF维修稳定、性能可靠为先决条件，已日趋成熟，并以使用寿命为目标。

Based on accurate step motor system parameters, the state equations describing step motor dynamic characteristics are set up. The operation of the self synchronization closed loop control system is simulated on computer. In the research the principle analysis and system design have been done about self synchronization closed loop operation. The relation between rotating EMF and the rotor position of the step motor is discussed. Through detecting the zero value of rotating EMF the rotor position of the step motor is indirectly obtained.

在得到准确的步进电动机系统参数的基础上，建立了描述步进电动机动态特性的状态方程，并对自同步闭环系统的动态特性进行了计算机仿真在论文的研究中，分析了旋转电势与电机位置的对应关系，通过旋转电势的过零检测间接得到转子位置信号，利用这种"间接传感器"方法实现了步进电动机的自同步闭环控制，论文从原理分析和系统设计两方面进行了研究。

Motor speed is controlled by varying the current in the field windings.for example,when the amount of current flowing through the field windings is increased, the field strength increases, causing the armature wingdings to produce a larger counter EMF which slows the motor.conversely,when the field current is decreased, the field strength decreases, and the motor speeds up because the conter EMF is reduced.

调速控制的不同目前在外地windings.for例如，当电流流动量的通过外地绕组是增加，电场强度的增加，导致电枢wingdings产生较大的反电势而减慢motor.conversely当外地电流降低，电场强度降低，电机的速度，因为conter电磁场降低。

The findings of EMF on MRI were as follows:（1）RVEMF(6 cases): Thickening of endocardium with moderately high signal intensity, right ventricle was smaller and deformed, including obliteration of apex, shortening of inflow tract and dilatation of outflow tract, with hypokinetic contraction of the RV wall.

结果 EMF分为右室型、左室型和双室型三个亚型，MRI所见为：(1)右室型（6例）：右室心内膜显著增厚呈较高信号，右室腔缩小变形，流入道短缩，心尖闭塞而流出道扩张，室壁运动减弱，电影MRI（3例）显示有中至大量三尖瓣返流。

If your printer is configured to save printed documents, the program can load them from the printer queue, or youcan open the following file formats directly: PCL5, HP-GL/2,PCL6, GDI printing and EMF Spooled Files.

如果你的打印机被配置为保存打印过的文档，该软件可以从打印机队列当中载入这些文档，或者你可以直接地打开下列文件格式：PCL5， HP-GL/2，PCL6， GDI 打印以及 EMF Spooled文件。

I think the steps to rotate EMF image is as follows.

我认为步骤旋转EMF图像如下。&/页&

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。