电动机

This paper introduces the control principle of the direct torque control system of an asynchronous motor,and proposes a new strategy to solve the problem of the large torque ripple and current ripple.

本文介绍了直接转矩控制系统的控制原理，并针对基于直接转矩控制的异步电动机运行时存在较大的电流及转矩脉动问题，提出一种新的控制方案，并基于Matlab 6。

This paper introduces the control principle of the direct torque control system of an asynchronous motor, and proposes a new strategy to solve the problem of the large torque ripple and current ripple. The Matlab 6.5 simulation shows that it can solve the problem efficiently.

本文介绍了直接转矩控制系统的控制原理，并针对基于直接转矩控制的异步电动机运行时存在较大的电流及转矩脉动问题，提出一种新的控制方案，并基于Matlab 6.5对这种新方法进行仿真，仿真结果表明该方案能有效的解决电流及转矩脉动的问题。

Put forward permanent magnetic synchronous servo system replaces induction motor and mechanical cam so as to realize digital winding in ring spinning machine.

摘 要：提出利用永磁同步电动机伺服系统取代异步电机和机械凸轮，实现细纱机的数字卷绕方案。

The utility model relates to a double-purpose driving apparatus of medical X-ray machine with remote-control and direct-control, which belongs to medical equipment.The driving apparatus comprises a direct-current speed reducing motor whose output terminal is fixed with a ring electromagnet; an armature iron is arranged on the motor output shaft whose end is provided with a driven wheel meshes with the armature iron and rotates around the motor shaft.As the electromagnet is electrified, the armature iron is attracted and disengages from the driven wheel.With the driving apparatus, the remote control and the direct control of a non-remote controlled X-ray machine can achieve, increasing the working efficiency by 3 to 4 times and the economical benefits.

该实用新型涉及双重用途的驾驶仪器的医用X光机的远程控制程序，并进行直接控制，属于医疗equipment.the驾驶仪组成，直接电流减速电机，其输出端是固定的一个环电磁铁；电枢铁是安排在电动机输出轴，其终点就是提供一台四轮驱动的网格与电枢铁和周围旋转电机shaft.as电磁铁通电，电枢铁是吸引和脱离接触，从驱动轮随着驾驶仪器，远程控制，并直接控制的一个非遥控X光机，能做到的事，提高工作效率3至4倍和经济效益。

In light of experience, the brushless self-control motor starter is superior to the frequency sensitive rheostat, but it's slightly inferior to liquid resistance box with larger capacity.

在调整前应确定电源（10KV，6KV，380V ）无缺相，起动柜及电动机无故障且过流整定值合适情况下再调整液体的阻值。

Torque motor have a quikly feedback and low rotate speed wave, can running smoothly in high torque and low speed situation.

力矩电动机反应速度快，转速波动小，能在高转矩低转速下稳定运行，机械特性和调节特性线性度好，具有高耦合刚度。

They're using everything imaginable, from old motorcycle engines to electric motors to even their own legs, like Mao Yiqing and his human-powered airplane shown above.

他们利用你能想象得到的任何东西，从旧摩托车引擎到电动机，甚至自己的腿，就像照片中的毛一清和他的人力飞行器所展示的。

In recent decades, with power electronic technology, microelectronics technology and the development of modern control theory, the medium and small power motors in industrial and agricultural production and People's Daily life are extremely extensive application.

近几十年来，随着电力电子技术、微电子技术及现代控制理论的发展，中、小功率电动机在工农业生产及人们的日常生活中都有极其广泛的的应用。

In recent decades, with the power electronics technology, microelectronic technology and the development of modern control theory, medium and small-power electric motors in the industrial and agricultural production and people's daily lives, there are very wide range of applications.

内容摘要：近几十年来，随着电力电子技术、微电子技术及现代控制理论的发展，中、小功率电动机在工农业生产及人们的日常生活中都有极其广泛的的应用。

Electric motors are used in tape recorders, toys, robots and thousands of other appliances and tools.

我们经常能在录象机、玩具、机器人以及其他数以千记的设备中找到电动机的身影。

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。