电动机

This thesis make a study on Vector-contorl WVF system of asynchronous motor. In the course of study, making use of the mathematical model of asynchomous motor in MT axes. Then both open-loop control system and close-loop vector-control system are respectively simulated with simulation block SIMULINK in MATLAB.

本文对异步电动机变频调速系统进行了研究，利用异步电动机在二相同步旋转MT坐标系下的数学模型，使用MATLAB中的仿真工具箱SIMULINK分别对开环控制系统和闭环矢量控制变频调速系统进行了仿真。

According to the current, motor protection are divided into overcurrent,negative and zero sequence protection.

基于MSP430的电动机保护装置是在传统的电机保护装置上集成了多种保护措施，实现了对低压电动机故障的判断和保护。

The phase EMF vector figure and winding structure of motor are given, and the cause of the radial imbalance electromagnetic force is analyzed base on it.

给出了电动机相电势矢量图及绕组构成，分析了电动机径向不平衡电磁力产生的原因。

Power control is the basic control strategy of the electric power steering and determines characteristics of the electric power steering.

着重讨论了电动助力控制的一般过程、电动机目标电流的决策方法、电动机电流的控制策略等问题。

The results have good reference for the design of BLDCM and the performance enhancement of the BLDCM speed regulation system.

分析结果对无刷直流电动机设计和提高无刷直流电动机调速系统性能均有很好的参考价值。

The invention concerns a vibration damping device comprising an element converting mechanical energy into electrical power mounted on a base designed to be fixed on a structure to be damped. Said converting element comprises an electrodynamic motor including a coil (20) mechanically connected to the base (1) and a magnetic circuit suspended by at least a spring (22), and the coil (20) is coupled with an electric charge having a resistive component and it includes a control device for varying the value of said resistive component based on at least two values.

本发明涉及一减震装置，所述装置包括一种把机械能转换为电能的能量转换装置，所述装置可安装在待减震结构的底座上，其特征在于，所述转换装置包括一电动机，所述电动机有一线圈(20)及一磁路，所述线圈采用机械方式连接底座(1)，所述磁路通过至少一根弹簧(22)悬置着，线圈(20)耦合着一具有一电阻元件的电载荷，并具有一控制装置，用于按至少两个值来改变所述电阻元件的阻值。

This paper introduces the principle of electromotor based on single chip computer 8051PWM,and the realization process of reversible control and non- reversible control .

介绍了基于单片机8051PWM控制的电动机原理，阐述了8051与直流电动机构成的电机可逆控制和不可逆控制的实现过程。

The results obtained from the simulation testing by double digital signal processing system confirm that the DTC system fits for synchronous motor with screw propeller by three level inverter and the system operation performance is perfect.

采用双DSP系统对电动机带螺旋桨负载的推进系统进行了半实物仿真，结果表明文中提出的控制策略能对三电平逆变器供电的同步电动机实施高性能的调速控制。

Single phase induction motor, three phase asrnchron/AUS induction motor, grinder, sander, scroll saw, dust collector.

8E53 8E55 单相异步电动机，三相异步感应电动机，砂轮机，砂带机，线锯机，集尘器。

The motor's dynamic model, which is generally employed for speed control and parameter estimation applications, is improved for the purpose of improving the parameter estimation accuracy by the assumption that the stator self inductance Ls is identical to the rotor self inductance Lr. The motor's dynamic response to a direct on line start is used to estimate the parameters.

详细给出了遗传算法应用于动态数学模型参数识别问题的一般步骤，在Kron动态数学模型基础上，假定定子自电感Ls和转子自电感Lr相等，利用异步电动机直接空载起动的特性，对异步电动机动态数学模型和简化模型的参数进行了识别，给出了识别参数及有关结果。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。