电动机

A set of equivalent three-phase windings was established based on the same magnetomotive force and power. A dual three-phase PMSM was substituted equivalently by a three-phase PMSM after a winding transformation.

基于产生相同磁动势和功率不变的原则，构建了一个等效的三相绕组，绕组变换后，原双三相永磁同步电动机等效为普通的三相永磁同步电动机。

The cascade speed regulation for AC motor can effectively and economically utilize the slip power of wound rotor asynchronous moter to regulate the speed.

交流电动机的串级调速是一种将绕线式异步电动机的转差功率利用起来的一种高效、济的调速方法。

3 AC motor 15kw 1/set 1.4 Speed regulator 15kw 1/set 1.5 Detailed requirement:--thermal treatment and quench for gear surface Feeding base 6 Auto feeder --mode vacuum suction model 7 Dry with hopper type --mode auto control temp.hot wind for heating --mode AC motor 2、Composite die head with changeable core and mouth mould ф11~ф32mm one unit moule --mode spiral type,with changeable mouth moule and core moule --heating control zone stainless steel heating ring --power Each set for changeable calibrator、mouth moule and core rod

1.3交流电动机十五千瓦1/set 1.4调速器一十五千瓦1/set 1.5详细的要求：-热处理和淬火齿轮表面喂养基地 6 ）自动接驳-模式真空吸管模型 7 ）干燥，漏斗型-模式的自动化控制t emp.hot风加热-模式交流电动机 2 ，复合模头与复杂多变的核心和口模ф11 ф32毫米一个单位moule -模式，螺旋型，与复杂多变的口m oule和核心m oule -暖气管制区不锈钢暖气响动-电源每套为复杂多变的校准，口moule和核心杆

Because of the high cost of permanent magnet, optimizing for brushless DC motor design is an inevitable choice, which is a comparatively mature and multiplicate technique after these years developing.

因为永磁材料的成本较高，所以对无刷直流电动机进行优化就成了必然的选择，无刷直流电动机的优化发展至今，已经是一项比较成熟的技术，优化方法也多种多样，各有优异。

By changing the connection of stator windings to change the pole number,the Mixed pole-changing simplex winding multispeed asynchronous motor can obtain two kinds or above rotational speeds with one set of winding.

混相变极的单绕组多速异步电动机是利用改变定子绕组的接法，以改变电机的极数，从而使电机用一套绕组获得两种或两种以上转速的异步电动机。

However, the polytrope of power supply state and mechanical load makes higher hazard rate of the electromotor, which not only damages the electromotor, but also influences the total manufacture, and causes enormous economic losses.

然而，由于供电状态和机械负荷的多变性，使得电动机的故障率较高，不仅会损坏电动机本身，而且会影响整个生产，造成较大的经济损失。

The present invention relates to an automatic AC motor protector, namely a multifunctional protecting switch for triphase motors.

三相电动机多功能保护开关属于交流电动机的自动保护装置。

Point—to—point machines use unsynchronized motors,with the result that the position of the machining head Can be assured only upon completion of a movement,or while only one motor is running.

点位控制机床采用异步电动机，因此，主轴的定位只能通过完成一个运动或一个电动机的转动来实现。

When stepping motor works in some pulse frequency, it may have the problem of oscillation and miss of synchronization, so it should be avoided at full steam.

在一定控制脉冲频率下，步进电动机可能出现振荡与失步现象，严重影响步进电动机的运行，要严格防止这种情况发生。

Furthermore, through the linearization model, the control laws of the aped tracking and feedback is designed and so the observer is designed and it can improve the velocity and accuracy of the speed-tracking under the condition which guaranteed the stability of the whole closed loop system.

本文正是为解决此类非线性限制问题而进行了深入的理论研究，在综合分析三相交流直线永磁同步伺服电动机非线性动态数学模型的基础上，采用反馈线性化控制理论，建立了三相交流直线永磁同步电动机速度跟踪闭环系统动态的输入—输出模型，进而通过该线性化模型设计反馈控制律、速度跟踪控制律和负载阻力扰动观测器，在保证整个闭环系统稳定的前提下，提高伺服跟踪的快速性和精确性。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。