Micro-voltmeter Capable of measuring either alternating or direct current voltage within an accuracy of 2%.

能測量交流或直流電壓在精確度2%之內(nèi)的微型伏特表欧美精品综合性久久影院。

Data communication ; IDC Internet data center ; Alternating UPS ; High voltage direct current UPS power supply system

數(shù)據(jù)通信在线免费观看欧美性爱； IDC互聯(lián)網(wǎng)數(shù)據(jù)中心搜毛片索毛片搜黄片搜黄片色毛片；交流UPS供電系統(tǒng)亚洲色大网站www永久网站；高壓直流UPS供電系統(tǒng)

During the electrodes buryied beneath the shallow earth surface were supplied with direct current, the electric-field distribution in anisotropic earth crust could be calculated by applying image method and electrostatic analogue method in electromagnetics.

以垂直于介質(zhì)主軸方向的平面作為兩種介質(zhì)的分界面研究视频一区欧美，對埋在較淺地表中的直流電極，以及其向大地供電而引起的各向異性地殼中的電場分布人人干人人操人人舔。

The algorithm used to implement fast Fourier transform of real-valued with complex-valued Fourier algorithm and the algorithm used to compensate the decaying direct current with arbitrary decay time parameter are deduced in detail.

對其中的一種用復(fù)序列DFT算法分析實數(shù)序列的算法和一種用來對具有任意衰減時間參數(shù)的衰減直流分量進行補償?shù)乃惴ㄟM行了詳細(xì)推導(dǎo)欧美色图图区。

Develop along with the technical high speed in arithmetic figure; the direct current servocontrol system expresses an unprecedented advantage.

隨著數(shù)字技術(shù)的高速發(fā)展，直流伺服控制系統(tǒng)表現(xiàn)出前所未有的優(yōu)勢韩国午夜理论片在线观看手机。

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.

本文首先對無刷直流電機進行了概述无码观看一区，并對其相關(guān)控制方法進行了討論，說明本文所采用反電動勢法的背景和意義自拍日韩中文无码视频；接著論述了無刷直流電機基本組成環(huán)節(jié)av性爱毛片在线播放、基本工作原理、運行特性和傳遞函數(shù)特级性爱图，然后是詳述本文研究的重點：基于反電動勢法的MATLAB調(diào)速系統(tǒng)的仿真以及基于反電動勢法的DSP控制系統(tǒng)的實現(xiàn)一级欧美AA片免费观看厕所偷拍。

In order to eliminate direct current drift and saturation problems of pure integrator for back electromotive force,an improved programmable low-pass filter rotor flux estimator was proposed to replace the pure integrator.

為了有效抑制反電動勢積分環(huán)節(jié)所存在的直流偏移和積分飽和問題天天狠天天透天干天干2020，采用一個截止頻率可根據(jù)輸出頻率進行自調(diào)整的低通濾波器來代替?zhèn)鹘y(tǒng)電壓模型磁鏈觀測器中的反電動勢積分環(huán)節(jié)。

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.Then the thesis expounds the basic component parts,the basic running principle,the running characteristic and transfer function of the BLDCM.And then the thesis detailedly dissertates its research pivot: the simulation of BLDCM system in MATLAB based on the method of Back-EMF and the control system of Digital Signal Processor based on the method of Back-EMF.

本文首先對無刷直流電機進行了概述国产精品福利午夜久久香蕉，并對其相關(guān)控制方法進行了討論a成人黄色网站视频免费，說明本文所采用反電動勢法的背景和意義；接著論述了無刷直流電機基本組成環(huán)節(jié)玖玖相交视频、基本工作原理色色色色色色色色色色色色网、運行特性和傳遞函數(shù)，然后是詳述本文研究的重點：基于反電動勢法的MATLAB調(diào)速系統(tǒng)的仿真以及基于反電動勢法的DSP控制系統(tǒng)的實現(xiàn)亚州黄色网址。

In recent years, high voltage direct current system is rapidly developed, but harmonic pollution is produced and becomes badly, harmonic measurement by true is the precondition and sticking point of restraining harmonic.

近些年來亚洲一级爱做视频，高壓直流輸電得到了快速的發(fā)展，電網(wǎng)的諧波污染也日趨嚴(yán)重国产丝袜调教a片免费视频，實時欧美图片性爱视频、準(zhǔn)確地測量諧波電流信號是有效抑制諧波電流的前提與關(guān)鍵。

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

分析了采用常規(guī)平衡電橋原理的直流絕緣監(jiān)察技術(shù)存在的問題欧美日韩乱码视频夫妇野外，提出了采用不平衡與平衡電橋原理相結(jié)合來檢測直流系統(tǒng)的絕緣狀況亚洲激情毛片网站，并給出了設(shè)計方法。