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id="oi374l3" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會</a></div><div id="82drhpi" class="clearfix searchWrap"><div id="qoz3kvq" class="searchInput"><input type="text" name="keywords" placeholder="請輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="kkfnw9h" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a 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src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282689248047/1940273.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="oitoe9q" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282689248047/1940273.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="luffqyd" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo),相位差測量儀</p><p><span>***更新：</span>2020-11-18 11:06:43</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rk3bhze" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州千宇光學(xué)科技有限公司</a></p><p><span>聯(lián)系人：</span>密先生</p><p><span>郵箱: </span>cimi@oec-tech.com</p><p><span>電話: </span>18662198664</p><p><span>傳真: </span>0512_69388290</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0512-69388290</p><p><span>地址: </span>蘇州工業(yè)園區(qū)東旺路8號7B-302室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="reuppch" class="page-proshow02"><p class="title">詳細說明</p><div id="dxni32s" class="box"><p><p> 光譜儀參數(shù) </p> <p> 探測器類型: HAMATSU光電二極管陣列 </p> <p> 像素點： 2048 </p> <p> 光柵：全息平場凹面衍射光柵 </p> <p> 狹縫：可選擇狹縫寬度（25um、50um、100um、200um） </p> <p> 光譜范圍： VIS：400--800nm </p> <p> UV-VIS:190--800nm </p> <p> 光學(xué)分辨率： VIS：1.5nm（100um狹縫） </p> <p> UV-VIS:1.5nm（100um狹縫） </p> <p> 波長精度： ±0，江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo).2nm </p> <p> 光譜雜散光： <0.05%（400nm） </p> <p> 信噪比： 2000：1 </p> <p> AD分辨率： 16bit </p> <p> 積分時間： 0.1ms--60s </p> <p> 供電： 5V/220mA </p> <p> 通訊接口： USB2.0（480Mbps） </p> <p> 解析多層相位差：相位差（0~20000nm） </p> <p> <br /> </p> <p> 吸收軸角度/偏光軸角度 </p> <p> 透過率，江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo)，色度（La，江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo)、b），偏光度 </p> <p> <br /> </p> <p> 快軸慢軸角度 </p> <p> 單波段（550nm為主）/多波段測試（380nm~nm為主） </p> <p> 內(nèi)應(yīng)力（此功能軟件開發(fā)中）軸角度測量范圍：0°~180° 。江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo),相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282689248047/1940273.png"></div><p> 相位差測試儀測試小科普： </p> <p> 1.Q：軸角度是吸收軸角度嗎？ </p> <p> A：否。①吸收軸角度，是指透過光線在某一方向呈現(xiàn)吸收狀態(tài)（透光率比較低），此光軸跟基準邊的夾角。通常同偏光軸（透過軸）垂直相交。 ②軸角度定義適用于雙折射樣品（產(chǎn)生相位差的樣品），在國際上普遍定義為慢軸與基準邊的夾角。 </p> <p> 2. Q：配向角（取向角）是指軸角嗎？ </p> <p> A：否。配向角是軸角在垂直方向的投影。當水平放置樣品時，配向角=軸角。當樣品傾斜時，配向角會隨著樣品的翻轉(zhuǎn)而變化，所以在測量配向角時候，需要知道樣品與水平面的夾角。江蘇國產(chǎn)相位差測量儀專業(yè)服務(wù)軸角度精度：±0.05°（精度業(yè)內(nèi)比較高）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo),相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304283297490234/9619687.png"></div><p style="text-indent:25px">來間接的測定信號傳播的時間，從而求得被測距離的。因此，信號相位測量的精度也就決定了測距的精度。相位測量技術(shù)的研究由來已久，**早的研究和應(yīng)用是在數(shù)學(xué)的矢量分析和物理學(xué)的圓周運動以及振動學(xué)方面，隨之在電力部門、機械部門、航空航天、地質(zhì)勘探、海底資源等方面也相應(yīng)得到重視和發(fā)展。隨著電子技術(shù)和計算機技術(shù)的發(fā)展，相位測量技術(shù)得到了迅速的發(fā)展，目前相位測量技術(shù)已較完善，測量方法及理論也比較成熟，相位測量儀器已系列化和商品化?，F(xiàn)代相位測量技術(shù)的發(fā)展可分為三個階段：第一階段是在早期采用的諸如阻抗法、和/差法、三電壓法、比對法和平衡法等，雖然方法簡單，但測量精度較低；第二階段是利用數(shù)字專用電路、微處理器、FPGA/CPLD、DSP等構(gòu)成測相系統(tǒng)，使測量精度得以大大提高；第三階段是充分利用計算機及智能化虛擬測量技術(shù)，從而大大簡化設(shè)計程序，增強功能，使得相應(yīng)的產(chǎn)品精度更高、功能更全。同時，各種新的算法也隨之出現(xiàn)。相位測量是正弦信號經(jīng)過不同的時間或不同的網(wǎng)絡(luò)后可以有不同的相位。通常所謂相位測量是指對兩個同頻率信號之間相位差的測量。**常見的是對網(wǎng)絡(luò)輸入與輸出信號的相位差，即網(wǎng)絡(luò)相移的測量。</p><p> 相位差測量是兩同周期正弦電量對應(yīng)點間角度差值的測量。 </p> <p> 此兩正弦電量可以同為電壓、電流，或一為電壓、一為電流等。對應(yīng)點常取正弦電量由負到正的過零點，相當于正弦電量函數(shù)的初相角。相位差的單位是度或弧度，正、負號表示領(lǐng)先或滯后關(guān)系。 </p> <p> 待測相位差的正弦電量的頻率范圍很廣，因此采用的測量方法和儀器一般隨頻率的高低來選擇。 </p> <p> 常用的方法： </p> <p> 直接法使用專用的儀表如指針式相位表、數(shù)字相位表，或采用陰級示波器來測量相位差。采用陰極示波器時，將兩同頻正弦電壓信號分別加到示波器的X、Y軸，得到如圖1所示的橢圓圖形，則兩正弦電壓之間的相位差∮=arc sin(b/α)。這一方法不能判斷兩信號哪一個領(lǐng)先或滯后，并且在∮值接近零時，橢圓也退化接近成為一條直線，即b值很小，所以∮值很難測準 </p> <p> 間接法通常采用三電壓表法。一般要求兩電壓信號有一公共點（設(shè)為a點），當分別測出兩信號電壓Uab、Uca，以及兩電壓的差值Ubc后，可畫出電壓三角形。按余弦定理，兩信號電壓間的相位差當∮很小時，可將Uab或Uca中較大的一個信號電壓分壓，使分壓后兩信號的數(shù)值相等。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 對應(yīng)樣品尺寸：可定制。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo),相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304283752412109/9298150.png"></div><p style="text-indent:25px">相位差測量兩個正弦電量可以是電壓和電流，或者一個是電壓，一個是電流等，對應(yīng)點通常是從負到正的過零點，相當于正弦電函數(shù)的初始相位角。相位差的單位是度或弧度，正負號表示超前或滯后關(guān)系。一種由于被測相位差正弦電量的頻率范圍很寬，所以通常根據(jù)頻率選擇測量方法和儀器。常用的方法有直接法和間接法。一種直接法：用指針式相位計、數(shù)字相位計等專用儀器或用負示波器測量相位差。當使用陰極示波器時，將兩個相同頻率的正弦電壓信號分別加到示波器的X軸和Y軸上。然后兩個正弦電壓之間的相位差為∮=電弧正弦（B/α）。高精度軸角度相位差測量儀相位差(0 20000nm)。江蘇國產(chǎn)相位差測量儀專業(yè)服務(wù)</p><p style="text-indent:25px">軸角度精度精度業(yè)內(nèi)** 高。江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo)</p><p style="text-indent:25px">若我們將一個信號周期看作是?360，則相差的范圍就在0°～360°。：兩個同頻信號之間的移相，?是電子行業(yè)繼電保護領(lǐng)域中模擬、分析問題的一個重要手段，利用移?相原理可以制作校驗各種有關(guān)相位的儀器儀表、繼電保護裝置的信號?源。因此，移相技術(shù)有著很廣的實用價值。我們知道，將參考信號整?形為方波信號，并以此信號為基準，延時產(chǎn)生另一個同頻的方波信號，?再通過波形變換電路將方波信號還原成正弦波信號。以延時的長短來?決定兩信號間的相位值。這種處理方式的實質(zhì)是將延時的時間映射為?信號間的相位值。也就是說，只要能夠測量出該延遲時間，我們就可?以推算出其相位差值。江蘇質(zhì)量相位差測量儀技術(shù)指導(dǎo)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2043036.html</p></div></div></div></div></div><div id="kzfasxn" class="page-right twoColRt"><div id="shx7tje" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="apfqgg3" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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