直流的

In the light of the trapezoidal back electromotive force and square phase current of brushless DC motor,a novel strategy of matrix converter driving BLDCM is presented in this paper.

针对无刷直流电机反电势为梯形波、相电流为方波的特点，提出一种用于驱动无刷直流电机的矩阵变换器的控制策略。

The method based on un balanced bridge and balance bridge principle to check direct-current system insulation situation at the same time was designed.

分析了采用常规平衡电桥原理的直流绝缘监察技术存在的问题，提出了采用不平衡与平衡电桥原理相结合来检测直流系统的绝缘状况，并给出了设计方法。

In this paper, based on fuzzy logic theory, bringing up a subjoining fuzzy-DC control, and simulate the Tianshengqiao-Guangzhou AC/DC system, obtain the satisfying aftermath.

基于模糊逻辑推理，提出了一种附加模糊直流控制方法，并对天生桥—广州交直流互联系统进行了仿真，得到了满意的结果，表明这种方法具有一定的理论价值和实际意义。

This paper introduces the operation principle and a travel fault accident of variable-speed DC drives system for the car puller of car dumper system in Jiangxi Fengcheng power plant,finds and analyses the potential reason,summarize it was caused by the wrong of PLC analog output module,and proposes some suggestion about variable-speed DC drives system maintenance.

简要介绍了丰城电厂翻车机系统拨车机直流调速系统工作原理及一次拨车机行走异常故障，对各种可能故障因素进行查找分析，归纳出由于PLC模拟量输出模块故障导致拨车机异常行走的结论，并对同类直流调速系统的维护工作提出了建议。

A new technology of controllable dynamic hybrid DC contactor was developed based on the functional advantages of fully-controlled power electronic switch and DC contactor.

基于全控型电力电子开关与直流接触器的性能优势互补，开发了一种动态行为可控的混合型直流接触器新技术。

Simulation of DC flash butt welding by coupling with electricity, heat, and mechanics will be instrumental in designing and drawing out technical specification.

本文首先采用有限元模拟方法对超细晶粒钢直流电阻闪光对焊的焊接过程进行了研究，建立了直流电阻闪光对焊过程的电、热、力耦合模型。

The research of FuXing substation De_ icer demonstrate project must be favorable for the popularization and application of De_ icer installation in power system

复兴变电站直流融冰示范工程的研究，必将有利于直流融冰装置在电力系统的推广与应用

Power-Servo by the Sino-German joint-venture companies operating in the professional CD-ROM production equipment electronic circuit systems, CNC systems, industrial control systems, SCM, and so on Research and Development, maintenance, automation project design, programming and debugging as one of the installation of automated Technology high-tech companies, such as: AE Power, Honle, UV-Tech UV lamp power, Pfeiffer Pfeiffer pumps, Leybold molecular pump, alcatel Alcatel pumps, WDP controller, AC-DC servo amplifier, servo drives, Drives, Light-foot signal processors, digital sensors, industrial motherboards, industrial switching power supply, I / O board, DC governor, PLC, touch screen monitors, human-computer interface, multi-axis controller, etc. China is the first CD-ROM industry CD production equipment maintenance center Microelectronics, Germany Spectairs authorized by China's optoelectronics and sophisticated technical support center.

Power-Servo公司是由中德合资经营专业从事光盘生产设备电子电路系统、数控系统、工控系统、单片机等等开发研究、维修、自动化项目设计、编程、安装调试为一体的自动化技术高科技公司，如： AE电源、Honle、UV-Tech UV灯电源、Pfeiffer普发分子泵、Leybold分子泵、alcatel阿尔卡特分子泵、WDP控制器、交直流伺服放大器、伺服驱动器、变频器、光尺信号处理器、数字感应器、工控主板、工控开关电源、I/O板、直流调速器、PLC、触摸屏显示器、人机界面、多轴控制器等等是中国光盘行业首家光盘生产设备微电子维修中心，德国Spectairs授权的中国光电子和精密技术支援中心。

These pulsations are known as the ac component of the rectifier output.

但是整流器的输出并不是纯粹的直流，而是脉动直流。

The features of DC transmission circuit magnetic field in the magnetic map are also discussed.

对直流输电线路磁场在磁测图中的特点也做了讨论，列举了直流输电线路影响的实例。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。