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clearfix"><h1>江蘇光學(xué)膜相位差測量儀服務(wù)保障蘇州千宇光學(xué)科技供應(yīng)</h1><div id="r7amtsj" class="proBig"><div id="hdfht9l" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282455625000/5909694.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="l3qx88g" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282455625000/5909694.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gi27ry8" 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>江蘇光學(xué)膜相位差測量儀服務(wù)保障,相位差測量儀</p><p><span>***更新：</span>2020-12-02 12:06:05</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="uipmdht" 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(jī): </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(dāng)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="8nrda9z" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="osz8jlx" class="box"><p><p style="text-indent:25px">兩個頻率相同的溝通電相位的差叫做相位差，或者叫做相差。這兩個頻率相同的溝通電，可所以兩個溝通電流，可所以兩個溝通電壓，可. 所以兩個溝通電動勢，也可所以這三種量中的任何兩個。兩個同頻率正弦量的相位差就等于初相之差。是一個不隨時刻改變的常數(shù)。也可所以一個元件_上的電流與電壓的相位改變。兩正弦電量可以同為電壓、電流，或一為電壓、-為電流等。對應(yīng)點常取正弦電量由負(fù)到正的過零點，相當(dāng)于正弦電量函數(shù)的初相角。相，江蘇光學(xué)膜相位差測量儀服務(wù)保障. 位差的單位是度或弧度，正、負(fù)號表示搶先或滯后聯(lián)系，江蘇光學(xué)膜相位差測量儀服務(wù)保障。待測相位差的正弦電量的頻率規(guī)模很廣，江蘇光學(xué)膜相位差測量儀服務(wù)保障，因此選用的丈量辦法和儀器一般隨頻率的高低來挑選。常用的辦法是直接法和間接法。高精度軸角度相位差測量儀吸收軸角度/偏光軸角度。江蘇光學(xué)膜相位差測量儀服務(wù)保障</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇光學(xué)膜相位差測量儀服務(wù)保障,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282455625000/5909694.png"></div><p style="text-indent:25px">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(dāng)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(dāng)∮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。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(dāng)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(dāng)∮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。江蘇先進(jìn)相位差測量儀質(zhì)量推薦軸角度測量范圍：0°~180° 。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇光學(xué)膜相位差測量儀服務(wù)保障,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282372529297/3872049.png"></div><p style="text-indent:25px">相位差，物理學(xué)概念。兩個頻率相同的交流電相位的差叫做相位差，或者叫做相差。這兩個頻率相同的交流電，可以是兩個交流電流，可以是兩個交流電壓，可以是兩個交流電動勢，也可以是這三種量中的任何兩個。一臺高精度相位差測量儀對相位差的測量尤為重要。相位差與相位的關(guān)系（1）當(dāng)j12>0時，稱***個正弦量比第二個正弦量的相位越前（或超前）j12；（2）當(dāng)j12<0時，稱***個正弦量比第二個正弦量的相位滯后（或落后）|j12|；（3）當(dāng)j12=0時，稱***個正弦量與第二個正弦量同相，如圖7-1(a）所示；（4）當(dāng)j12=±π或±180°時，稱***個正弦量與第二個正弦量反相；（5）當(dāng)j12=±π/2或±90°時，稱***個正弦量與第二個正弦量正交。相位差示例1.已知u=311sin（314t-30°）V，I=5sin（314t+60°）A，則u與i的相位差為jui=(-30°）-(+60°）=-90°，即u比i滯后90°，或i比u超前90°。相位差的取值范圍和初相一樣，小于等于π（180°）.對于超出范圍的，同樣可以用加減2Nπ來解決.2.研究交流電路的相位差.如果電路含有電感和電容，對于純電容電路電壓相位滯后于電流（電壓滯后電流多少度也可以表述成電流超前電壓多少度），純電感電路電流相位滯后于電壓。</p><p style="text-indent:25px">隨著科學(xué)技術(shù)突飛猛進(jìn)的發(fā)展，電子技術(shù)比較廣的應(yīng)用于工業(yè)、農(nóng)業(yè)、交通運(yùn)輸、航空航天、國防建設(shè)等國民經(jīng)濟(jì)的諸多領(lǐng)域中，而電子測量技術(shù)又是電子技術(shù)中進(jìn)行信息檢測的重要手段，在現(xiàn)代科學(xué)技術(shù)中占有舉足輕重的作用和地位。? 相位差測試儀是工業(yè)領(lǐng)域中是經(jīng)常用到的一般測量工具，比如在電力系統(tǒng)中電網(wǎng)并網(wǎng)合閘時，需要兩電網(wǎng)的電信號相同，這就需要精確的測量兩工頻信號之間的相位差。更有測量兩列同頻信號的相位差在研究網(wǎng)絡(luò)、系統(tǒng)的頻率特性中具備重要意義。相位測量的方法很多，典型的傳統(tǒng)方法是通過顯示器觀測，這種方法誤差較大，讀數(shù)不方便。為此，我們設(shè)計了一種數(shù)字相位差測量儀，實現(xiàn)了兩列信號相位差的自動測量及數(shù)顯。測量波段：550nm單波段，上料方式：手動上料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇光學(xué)膜相位差測量儀服務(wù)保障,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304283662138672/3154010.png"></div><p> 相位差測量儀主要是由鎖相環(huán)產(chǎn)生360倍頻基準(zhǔn)信號和移相網(wǎng)絡(luò)的基準(zhǔn)信號與待測信號進(jìn)行異或后的信號作為顯示器的閘門電路和控制信號。頻率測量模塊主要是用計數(shù)法測量頻率的，它是有某個已知 </p> <p> 標(biāo)準(zhǔn)時間間隔Ts內(nèi)，測出被測信號重復(fù)出現(xiàn)的次數(shù)N，然后計算出頻率f=N/Ts.顯示電路模塊主要是由計數(shù)器、鎖存器、譯碼器和數(shù)碼管組成。 </p> <p> 相位差測試儀是工業(yè)領(lǐng)域中是經(jīng)常用到的一般測量工具，比如在電力系統(tǒng)中電網(wǎng)并網(wǎng)合閘時，需要兩電網(wǎng)的電信號相同,這就需要精確的測量兩工頻信號之間的相位差。軸角度精度精度業(yè)內(nèi)** 高。江蘇光學(xué)膜相位差測量儀服務(wù)保障</p><p style="text-indent:25px">軸角度精度：±0.05°（精度業(yè)內(nèi)比較高）。江蘇光學(xué)膜相位差測量儀服務(wù)保障</p><p style="text-indent:25px">相位測量技術(shù)的研討由來已久，**早的研討和應(yīng)用是在數(shù)學(xué)的矢量分析和物理學(xué)的圓周運(yùn)動以及振動學(xué)方面，隨之在電力部分、機(jī)械部分、航空航天、地質(zhì)勘探、海底資源等方面也相應(yīng)得到注重和展開。跟著電子技術(shù)和計算機(jī)技術(shù)的展開，相位測量技術(shù)得到了靈敏的展開，現(xiàn)在相位測量技術(shù)已較完善，測量方法及理論也比較老練，相位測量儀器已系列化和商品化?，F(xiàn)代相位測:量技術(shù)的展開可分為三個階段:***階段是在前期采用的諸如阻抗法、和/差法、三電壓法、比對法和平衡法等，雖然方法簡略，但測量精度較低;第二階段是運(yùn)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;第三階段是充分運(yùn)用計算機(jī)及智能化虛擬測量技術(shù)，然后大大簡化規(guī)劃程序，增強(qiáng)功用，使得相應(yīng)的產(chǎn)品精度更高、功用更全。一起，各種新的算法也隨之出現(xiàn)。江蘇光學(xué)膜相位差測量儀服務(wù)保障</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2236633.html</p></div></div></div></div></div><div id="vjlizta" class="page-right twoColRt"><div id="8tfc393" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="u7r7ryf" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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