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</li> <li id="quimsyk" class="yj"><a href="/ParentList-1496622.html" class="yja" onmouseover="showsubmenu('工頻放電自動(dòng)測(cè)試儀')">工頻放電自動(dòng)測(cè)試儀</a> <div class="quimsyk" id="submenu_工頻放電自動(dòng)測(cè)試儀" style="display:none"> <ul> <li id="quimsyk" class="ej"><a href="/SonList-1496623.html" class="eja">工頻放電自動(dòng)測(cè)試儀</a></li> </ul> </div> </li> <li id="quimsyk" class="yj"><a href="/ParentList-1935168.html" class="yja" onmouseover="showsubmenu('高壓無(wú)線核相儀')">高壓無(wú)線核相儀</a> <div class="quimsyk" id="submenu_高壓無(wú)線核相儀" style="display:none"> <ul> </ul> </div> </li> <li id="quimsyk" class="yj"><a href="/ParentList-1935169.html" class="yja" onmouseover="showsubmenu('高壓核相儀')">高壓核相儀</a> <div class="quimsyk" id="submenu_高壓核相儀" style="display:none"> <ul> </ul> </div> </li> </ul> </div> </div></div> <div id="quimsyk" class="inpage_right"> <div id="quimsyk" class="mbx2"><a href="/">首頁(yè)</a> > <a href="/article.html">技術(shù)文章</a> > 想知道什么是LCR數(shù)字電橋？本篇將為您解答</div> <div id="quimsyk" class="inpage_content"> <div id="quimsyk" class="nr_main_box"> <h1 class="inside_rnewtil">想知道什么是LCR數(shù)字電橋？本篇將為您解答</h1> <div id="quimsyk" class="inside_rnewtime">點(diǎn)擊次數(shù)：458 更新時(shí)間：2022-09-13</div> <div id="quimsyk" class="inside_rnewcon"><div>　　L：電感(為了紀(jì)念物理學(xué)家Heinrich Lenz)，C：電容(Capacitor)，R：電阻(Resistance)，數(shù)字電橋就是能夠測(cè)量電感，電容，電阻，阻抗的儀器，這是一個(gè)傳統(tǒng)習(xí)慣的說(shuō)法，最早的阻抗測(cè)量用的是真正的電橋方法<br /> </div><div>　　隨著現(xiàn)代模擬和數(shù)字技術(shù)的發(fā)展，早已經(jīng)淘汰了這種測(cè)量方法，但LCR電橋的叫法一直沿用至今。如果是使用了微處理器的LCR電橋則叫LCR數(shù)字電橋。一般用戶又稱這些為：LCR測(cè)試儀、LCR電橋、LCR表、LCR Meter等等。<br /> </div><div>　　采用數(shù)字技術(shù)測(cè)量阻抗參數(shù)的電橋。數(shù)字技術(shù)是將傳統(tǒng)的模擬量轉(zhuǎn)換為數(shù)字量，再進(jìn)行數(shù)字運(yùn)算、傳遞和處理等。<br /> </div><div>　　1972年，國(guó)際上出現(xiàn)帶微處理器的數(shù)字電容電橋，它將模擬電路、數(shù)字電路與計(jì)算機(jī)技術(shù)結(jié)合在一起，為阻抗測(cè)量?jī)x器開(kāi)辟了一條新路。<br /> </div><div>　　原理<br /> </div><div>　　<strong><a href="http://networx.cn/SonList-1338505.html" target="_blank">LCR數(shù)字電橋</a>的測(cè)量對(duì)象為阻抗元件的參數(shù)，包括交流電阻R、電感L及其品質(zhì)因數(shù)Q，電容C及其損耗因數(shù)D。</strong>因此，又常稱數(shù)字電橋?yàn)閿?shù)字式LCR測(cè)量?jī)x。其測(cè)量用頻率自工頻到約100千赫?；緶y(cè)量誤差為0.02%，一般均在0.1%左右。<br /> </div><div>　　Zx = Ux/Ix = Rr * Ux/Ur<br /> </div><div>　　此式為一相量關(guān)系式。如使用相敏檢波器(PSD)分別測(cè)出Ux和Ur對(duì)應(yīng)于某一參考相量的同相量分量和正交分量，然后經(jīng)模數(shù)轉(zhuǎn)換(A/D)器將其轉(zhuǎn)化為數(shù)字量，再由計(jì)算機(jī)進(jìn)行復(fù)數(shù)運(yùn)算，即可得到組成被測(cè)阻抗Zx的電阻值與電抗值。<br /> </div><div>　　LCR數(shù)字電橋只是繼承了電橋傳統(tǒng)的稱呼。實(shí)際上它已失去傳統(tǒng)經(jīng)典交流電橋的組成形式，而是在更高的水平上回到以歐姆定律為基礎(chǔ)的測(cè)量阻抗的電流表、電壓表的線路和原理中。<br /> </div><div>　　數(shù)字電橋可用于計(jì)量測(cè)試部門對(duì)阻抗量具的檢定與傳遞，以及在一般部門中對(duì)阻抗元件的常規(guī)測(cè)量。很多數(shù)字電橋帶有標(biāo)準(zhǔn)接口，可根據(jù)被測(cè)值的準(zhǔn)確度對(duì)被測(cè)元件進(jìn)行自動(dòng)分檔;<br /> </div><div>　　也可直接連接到自動(dòng)測(cè)試系統(tǒng)，用于元件生產(chǎn)線上對(duì)產(chǎn)品自動(dòng)檢驗(yàn)，以實(shí)現(xiàn)生產(chǎn)過(guò)程的質(zhì)量控制。80年代中期，通用的誤差低于0.1%的數(shù)字電橋有幾十種。數(shù)字電橋正向著更高準(zhǔn)確度、更多功能、高速、集成化以及智能化程度方面發(fā)展。</div></div> <div id="quimsyk" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-3132141.html">MG6002W+智能型三相多功能相位安表技術(shù)協(xié)議</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-3129042.html">干式試驗(yàn)變壓器【康登電氣】使用步驟</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="quimsyk" id="z_Footer"> <div id="quimsyk" class="pz_down"> <div id="quimsyk" class="w_1200"> <div id="quimsyk" class="footT"> <div id="quimsyk" class="footAddr"> <div id="quimsyk" class="footTit">上海康登電氣科技有限公司</div> <div id="quimsyk" class="dAddr"><img class="ico" src="/Skins/329197/images/icon_foot1.png">地址：上海市普陀區(qū)金通路1118弄6號(hào)</div> <div id="quimsyk" class="dAddr"><img class="ico" 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