电动机

The application of motor has spread all kinds of fields of national economy and people's daily life as the main mechanic-electronic energy conversion device for a century or more.

一个多世纪以来，电动机作为最主要的机电能量转换装置，其应用范围已遍及国民经济的各个领域和人们的日常生活。

But because of some disadvantages such as their complex configuration, costliness, inconvenience of maintenance, they are gradually replaced by asynchronous machines.

传统的电梯采用直流电动机驱动，存在着结构复杂、制造成本高、可维护性差等系列不足，采用异步电机取代直流电机已是大势所趋。

Later models included a double-step pulley for the motor and a proper countershaft assembly, thus doubling the number of available speeds and giving, according to the handbook, a range from 55 to 465 RPM in backgear and from 380 to 3050 in direct drive, which was a much more satisfactory arrangement.

稍后模型包括一个双步滑轮为电动机和一个适当的countershaft大会，因此，人数增加一倍，现有的速度和给予，根据手册，射程从55至465每分钟转速在backgear和从380到3050 ，在直接驱动，这是一个更理想的安排。

Experimental design of the circuit - the transistor triggered by a single node of the single-phase half-controlled bridge rectifier circuit, through the step-down, rectifier, output waveform, circuit design including DC motors, Thyristor, single crystal, such as rectifier circuits.

实验设计电路-由单结晶体管触发的单相半控桥式整流电路，通过降压、整流、输出波形，电路设计包括直流电动机，晶闸管，单结晶，整流电路等。

In this paper, the mathematical model of BLDCM drive system using current inverter has been analyzed.

本文分析了无刷直流电动机在电流型变频器下的系统数学模型。

We analyze the varying situation of current in a chopping period, and give the analytical expression of current.

在此基础上，对正交圆柱结构三自由度电动机系统的绕组电流进行了研究。

The main point of this project is to research the digital control system of DC motor.

本课题研究的重点就是数字式直流电动机的控制系统。

Decelerator and three parts of cylinder , is linked by the shaft

电动机是动力源，减速器是传动系统，滚筒为

The air load of beam style pumping unit is one of the important parameters, which is the first sign of the work capacity, and see it whether energy-saving, the technical indicators are the size of the electromotor consumption power and the work state of the decelerator.

游梁式抽油机驴头的悬点载荷标志抽油机的工作能力的重要参数之一，而看它是否节能，其技术指标是抽油机的电动机实耗功率的大小及减速器的工作状态。

MDP/CQG Magnetic-driving pipeline pumps are designed in magnetic-driving technology, and the vertical pipeline pumps lay the foundation for it, the application of which is to solve the problem of conveying of flammable, explosive, severely poisonous, mordant, precious liquids, the viscosity of which is similar to water, and no solid grains in it, and applied to petroleum, chemical engineering, metallurgy, electric power, deckle, food and pharmacy and so on.

MDP/CQG磁力驱动管道泵是在立式管道离心泵的基础上，应用磁力驱动技术组合设计而成，主要特点是利用磁传动器的外磁钢旋转时，磁力线穿过间隙和隔离套，作用于内磁钢上，使泵轴与电动机同步旋转，无接触地传递扭矩。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。