利用气隙比磁导法建立了混合式步进电动机的磁网络模型，推导出谐波反电势的表达式。
The magnetic network model of hybrid step motor is established according to the air gap late permeance method, and the expression of the harmonic back EMF is deduced.
该电动机的定子除了换新外别无他法。
阐述了三相异步电动机杂散损耗的测定的几种方法，通过不同的测法分析了杂散损耗的大小，最后通过直流机反转法试验杂散损耗，进行测定分析。
The paper descirbes several methods for the measurement of the stray loss of thee-phase asynchronous motor, and analyzes the amount of thray loss by using different measuring ways.
在介绍感应电动机软起动系统硬件结构的基础上，采用故障树分析法对其作了可靠性的定性分析。
Qualitative analysis of induction motor soft-starting systems reliability was carried out, based on the introduction of its hardware diagram.
本文讨论了并励电动机用调磁法调速过程转矩随磁通减小而增大的关系。
This paper discusses the relation between the electromagnetic torque of a shunt dc motor and its flux. The torque increases as the flux decreases.
根据“等效功率损耗法”推导出实用的电动机负载率计算公式。
According to the equivalent efficiency loss method, the practical formula for motor load rate is derived.
依据类比法思想，编写了数据库支撑的异型槽单相异步电动机设计软件。
Software which designs this kind of single phase induction motor is accomplished based on an analogy method and the database technology.
本文在对异步电动机常见电气故障机理分析的基础上，提出了利用定子电流法来诊断电机电气故障。
On the basis of analysing the common electric trouble mechanism of induction motor, the paper proposes making use of stator current law to diagnose the induction motor's electric fault.
在建立异步电动机和变频器数学模型的基础上，按照工程设计法设计出PI调节器，并进行了双闭环控制实验。
On the base of ma thematic model of induction motor and inverter, engineering designing method is used to design the PI regulator, and experiments on the double-closed-loops system is carried out.
本文将在周期性负载下稀土永磁同步电动机持续稳态的动态特性的状态变量法与相关技术这两种现代分析方法有机地结合在一起。
The state variables analysing method and interrelation analysing method are combined effectively in calculating the sustained steady state dynamic performance of REPMSM under periodical load.
在测量传输功率较大的变频电动机的功率时，采用了损耗总和法进行计算。
The loss summation method is used for calculating output power of AC motor.
采用机床主电动机功率法和声发射（AE）法来获取切削过程中发出的刀具磨损和破损信号，建立了刀具状态试验系统。
Experiments were implemented to obtain the motor power and AE signals under different cutting parameter condition(cutting velocity, feed velocity and cutting depth), tool wear and breakage conditions.
利用气隙比磁导法建立了混合式步进电动机的磁网络模型，推导出谐波反电动势的表达式。
In this paper, the magnetic network model of hybrid step motor is established according to the air gap rate permeance method, and the expression of the harmonic back EMF is deduced.
本文采用了近代控制理论常用的状态变量法研究了反应式步进电动机动特性及其最佳控制。
This paper deals with the research of dynamic characterises and optimal control of VR step motor with the state variable method in modern control theory.
介绍了三相笼型异步电动机负载杂散损耗的四种测试方法，包括三种实测法和推荐值法。
Four kinds of test methods for determining stray-load loss of three-phase cage asynchronous motors were introduced, including three kinds of procedures by measuring and by assuming.
本文采用有限元法对带铁氧体屏蔽罩的稀土永磁低惯量直流伺服电动机的磁场进行了计算。
The magnetic field of a low-inertia REPM DC servo motor with ferrite shielding case was calculated by the finite element method.
一般异步电动机起动电阻的计算方法，无论是作图法或解析法，往往都需要多次尝试。
As a normal calculation method for asynchronous motor starting resistance, whether diagram drawing or analytics, usually there should be many trials.
为避开三相交流异步电动机和变频器的数学模型，利用飞升曲线法简单近似确定各环节的数学模型。
For avoiding the math models of three-phase AC electromotor and frequency inverter, adopt the simple similarity of ascending curve method to ensure the math models of every loop.
介绍了凸极无刷直流电动机转子位置检测的电流注入法。
This paper describes a current injection method to detect the rotor flux position of the salient-pole brushless DC motor.
本文用参数变异法给出串激直流电动机在不同转速情况下的运动方程的解析解，以拓宽人们分析这类问题的思路。
In this paper, parametric variation method is used in kinematic equation of series excitation direct current motor with different turning velocities.
以直线感应电动机为例，将整个直线感应电动机模型作为求解域，采用有限元法对其磁场进行了数值计算。
In this paper, a linear induction motor is taken as an example, the whole motor model is solved, and its magnetic field is calculated by finite element method.
首先运用对称分量法将单相异步电动机分为正序系统和负序系统，然后分别用矩阵分析了这两个系统中各自的有功功率、无功功率和视在功率。
Using the method of symmetric components and matrix, this paper analyses instantaneous power and the operation parameters concerning one-phase asynchronous motor in dynamic state.
采用有限元法计算分析了定子偏心与转子偏心对无刷直流电动机的气隙磁场、定位力矩及单向磁拉力的影响。
The effects of stator and rotor eccentricity on the magnetic field distributions, cogging torque and unbalanced force were calculated in this paper by using finite element method (FEM).
根据交流感应电动机在两相静止坐标系上的数学模型，采用脉冲电流法、脉冲电压法实现了对交流电动机电气参数的静态测试。
On the basis of the mathematical model of AC induction motor in two phase axis system, the static measurement of electrical parameter for AC motor is completed using pulse voltage and pulse current.
介绍了一种新的无位置传感器无刷直流电动机的转子位置检测方法-速度无关位置函数法。
A novel method of rotor position detect for sensorless brushless DC motor was introduced, that was the method of speed-independent position function.
本文尝试用感应电动机的T型等效电路和能量比法，分析三相感应电机的工作特性。
The author tries to analyze the operational characteristics of three phase induction motor using the T-type equivalent circuit of induction motor and the energy ratio method.
基于凸极跟踪的思想，详细讨论了高频电压信号注入法在永磁同步电动机无位置传感器运行控制中的应用。
Based on the thought of salient pole tracking, the paper studied the application of this method in sensorless control of PMSM in detail.
应用有限单元法对电动机换向抽油机支架进行了静态分析，计算其静强度和刚度。
The static strength and stiffness of the framework of motor-reversing type pumping unit is analyzed by the finite element method.
针对同步电动机传统顺极性投励方式可靠性差的问题，提出了一种新型最佳顺极性投励方法——定子电量法。
In this paper, a new method called stator-electricity is proposed for the best exciting towards polarity by analyzing the reliability of synchronous motor's traditional exciting.
以某型同步电动机为例，采用三维有限元法计算了实心转子的温度场，计算结果与实测结果相接近。
A type of synchronous motor is taken for example and temperature field in rotor is calculated in use of 3d Finite Element Method.
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