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id="basiprt" class="leftbox clearfix"><h1>江蘇拉伸膜相位差測量儀質量推薦蘇州千宇光學科技供應</h1><div id="ap2cbik" class="proBig"><div id="sbszgnu" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282805332031/666775.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="rw2ctlc" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282805332031/666775.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3qo8jvs" 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>產品關鍵詞：</span>江蘇拉伸膜相位差測量儀質量推薦,相位差測量儀</p><p><span>***更新：</span>2020-10-24 04:07:42</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="qk3wrov" 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="dctvshe" class="page-proshow02"><p class="title">詳細說明</p><div id="3i3skho" class="box"><p><p style="text-indent:25px">所謂移相是指兩種同頻的信號，以其中的一路為參考，另一路相?對于該參考作超前或滯后的移動，即稱為是相位的移動。兩路信號的?相位不同，便存在相位差，簡稱相差。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相位的儀器儀表、繼電保護裝置的信號?源。因此，移相技術有著特別廣的實用價值。我們知道，江蘇拉伸膜相位差測量儀質量推薦，將參考信號整?形為方波信號，并以此信號為基準，江蘇拉伸膜相位差測量儀質量推薦，江蘇拉伸膜相位差測量儀質量推薦，延時產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。相位差測亮范圍: 0-20000nm 相位差重復性精度: 3σ≤ 0.1 nm。江蘇拉伸膜相位差測量儀質量推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇拉伸膜相位差測量儀質量推薦,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282805332031/666775.png"></div><p> 相位差測量是兩同周期正弦電量對應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**或滯后關系。 </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**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**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 /> 江蘇拉伸膜相位差測量儀質量推薦軸角度精度：±0.05°（精度業(yè)內比較高）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇拉伸膜相位差測量儀質量推薦,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282455625000/5909694.png"></div><p style="text-indent:25px">隨著科學技術突飛猛進的發(fā)展，電子技術比較廣的應用于工業(yè)、農業(yè)、交通運輸、航空航天、**建設等國民經濟的諸多領域中，而電子測量技術又是電子技術中進行信息檢測的重要手段，在現(xiàn)代科學技術中占有舉足輕重的作用和地位。實現(xiàn)了兩列信號相位差的自動測量及數(shù)顯。近年來，隨著科學技術的迅速發(fā)展，很多測量儀逐漸向“智能儀器”和“自動測試系統(tǒng)”發(fā)展，這使得儀器的使用比較簡單，功能越越多。? 相位差測試儀應用于電力線路、變電所的相位校驗和相序校驗，具有核相、測相序、驗電等功能。具備很強的抗干擾性，適應各種電磁場干擾場合。被測高電壓相位信號由采集器取出，經過處理后直接發(fā)射出去。接收并進行相位比較，對核相后的結果定性。</p><p> 相位差測試儀的發(fā)展與現(xiàn)狀 </p> <p> 相位測量技術的研究由來已久,**早的研究和應用是在數(shù)學的矢量分析和物理學的圓周運動以及振動學方面，隨之在電力部門、機械部門、航空航天、地質勘探、海底資源等方面也相應得到重視和發(fā)展。隨著電子技術和計算機技術的發(fā)展,相位測量技術得到了迅速的發(fā)展，目前相位測量技術已較完善，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)代相位測量技術的發(fā),展可分為三個階段:***個階段是早期采用的諸如阻抗法、和/差法、三電壓法、對比法和平衡法等，雖方法簡單，但測量精度較低，第二階段是利用數(shù)字 </p> <p> <br /> </p> <p> <br /> </p> <p> **電路，微處理器、FPGA/CPLD、 DSP 等構成測相系統(tǒng)，使測量精度得以**提高，第三階段是充分利用計算機及智能化虛擬測量技術，從而**簡化設計程序，增強功能，使得相應的產品精度更高，功能更全，同時各種新的算法也隨之出現(xiàn)。 </p> <p> <br /> </p> <p> <br /> 整機尺寸：根據(jù)客戶樣品尺寸定制。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇拉伸膜相位差測量儀質量推薦,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282689248047/1940273.png"></div><p style="text-indent:25px">相位是關于一個波，特定的時刻在它循環(huán)中的方位:-種它是否在波峰、波谷或它們之間的某點的標度。相位描繪信號波形改動的衡量，通常以度(視點)作為單位，也稱作相角。當信號波形以周期的辦法改動，波形循環(huán)一周即為360°。相位常應用在科學領域，如數(shù)學、物理學等。例如:在函數(shù)y=Acos(∞x+φ)中，Wx+中稱為相位。在astrolog32中點擊ALTIFT+A可以顯示相位設定菜單。在溝通電中，相位是反映溝通電任何時刻的情況的物理量。溝通電的大小和方向是隨時刻改動的。比方正弦溝通電流,它的公式是i=Isin2Tft。i是溝通電流的瞬時值，I是溝通電流的比較大值，f是溝通電的頻率，t是時刻。跟著時刻的推移，溝通電流可以從零變到比較大值,從比較大值變到零，又從零變到負的比較大值,從負的比較大值變到零。在三角函數(shù)中2Jft相當于弧度，它反映了溝通電任何時刻地點的情況，是在增大仍是在減小，是正的仍是負的等等。因而把2兀ft叫做相位，或許叫做相。PLM-100根據(jù)客戶樣品尺寸定制。江蘇日文王子相位差測量儀質量保證</p><p style="text-indent:25px">高精度軸角度相位差測量儀相位差(0 20000nm)。江蘇拉伸膜相位差測量儀質量推薦</p><p style="text-indent:25px">相位檢測儀器工作原理數(shù)字相位計一般采用相位-電壓轉換法的相位差數(shù)字化測量方法.它測量的是同頻信號的相位差，相位差為φ的兩個同頻信號U1(t)和 U2(t)分別經過各自的衰減電路被衰減成為振幅在0.6V到2.0V的基準電壓，然后送至相應的整形電路整形為方波，此時對稱調整電路會對這兩個信號進行對稱調整，使得測量結果更準確，這樣就得到了兩個同頻方波信號，再經過鑒相脈沖電路得到一個隨相位差變化而變化的脈沖信號 △t.相位差的數(shù)字化是采用填充計數(shù)法實現(xiàn)的，即用周期為τ的脈沖分別對△t和T進行計數(shù)，則相位差:φ=△tTX360° =n1 Tn2τ X360° =n1n2X360°式子中T為兩個被測信號的周期，n1為△t時間內所填充的脈沖個數(shù), n2為T時間內所填充的脈沖個數(shù)。由于不同的信號電壓大小不同，所以他們需要進入不同的衰減電路,才能保證整個電路的安全和測量的準確性,這就需要一個精確的自動換程電路.而后續(xù)的信號處理需要--個幅值穩(wěn)定在-一個范圍內的基準信號，這就需要通過衰減器來實現(xiàn).江蘇拉伸膜相位差測量儀質量推薦</p><p style="text-indent:25px">蘇州千宇光學科技有限公司致力于機械及行業(yè)設備，是一家其他型的公司。公司自成立以來，以質量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下高低溫光電綜合系統(tǒng)，彎折機，，深受客戶的喜愛。公司秉持誠信為本的經營理念，在機械及行業(yè)設備深耕多年，以技術為先導，以自主產品為重點，發(fā)揮人才優(yōu)勢，打造機械及行業(yè)設備良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1682860.html</p></div></div></div></div></div><div id="mldaxe7" class="page-right twoColRt"><div id="2j4o273" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3t48gsj" class="recomPic likePro"><a 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