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src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637447611112563818/794120.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="s29jyzz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637447611112563818/794120.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8oowog9" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>江蘇光軸測量儀供應(yīng)商,光軸測量儀</p><p><span>***更新：</span>2021-01-24 11:05:12</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="zjdurd4" 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="qprjqsh" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vzgifcr" class="box"><p><p> 相位差測量是兩同周期正弦電量對應(yīng)點(diǎn)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(diǎn)常取正弦電量由負(fù)到正的過零點(diǎn)，相當(dāng)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(fù)號表示**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**的儀表如指針式相位表，江蘇光軸測量儀供應(yīng)商、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(shí)，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(gè)**或滯后，并且在∮值接近零時(shí)，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(zhǔn) </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(diǎn)（設(shè)為a點(diǎn)），江蘇光軸測量儀供應(yīng)商，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(shí)，可將Uab或Uca中較大的一個(gè)信號電壓分壓，江蘇光軸測量儀供應(yīng)商，使分壓后兩信號的數(shù)值相等。對應(yīng)樣品尺寸：可定制，數(shù)據(jù)輸出：電腦連接。江蘇光軸測量儀供應(yīng)商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇光軸測量儀供應(yīng)商,光軸測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637447611112563818/794120.png"></div><p> 相位差測試儀是工業(yè)領(lǐng)域中是常常用到的一般測量東西，比如在電力系統(tǒng)中電網(wǎng)并網(wǎng)合閘時(shí)，需求兩電網(wǎng)的電信號相同,這就需求準(zhǔn)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討網(wǎng)絡(luò)、系統(tǒng)的頻率特性中具備重要意義。相位測量的方法許多，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，我們規(guī)劃了-種數(shù)字相位差測量儀,完成了兩列信號相位差的自動測量及數(shù)顯。近年來，跟著科學(xué)技術(shù)的迅速開展，許多測量儀逐步向“智能儀器”和“自動測試系統(tǒng)”開展，這使得儀器的運(yùn)用比較簡單,功能越越多。 </p> <p> 相位差測試儀應(yīng)用于電力線路、變電所的相位校驗(yàn)和相序校驗(yàn)，具有核相、測相序、驗(yàn)電等功能。具備很強(qiáng)的抗煩擾性，習(xí)氣各種電磁場煩擾場合。被測高電壓相位信號由采集器取出，通過處理后直接發(fā)射出去。由***接收并進(jìn)行相位比較,對核相后的成果定性。因本產(chǎn)品是無線傳輸，真實(shí)到達(dá)安全可靠、快速準(zhǔn)確，習(xí)氣各種核相場合。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 江蘇光軸測量儀供應(yīng)商測量波段可根據(jù)客戶要求定制波段。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇光軸測量儀供應(yīng)商,光軸測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637447611822251505/9649013.png"></div><p> 相位測量技術(shù)的研究由來已久。**早的研究和應(yīng)用領(lǐng)域是數(shù)學(xué)矢量分析、物理圓周運(yùn)動和振動。隨著電子技術(shù)和計(jì)算機(jī)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)更加完善，測量方法和理論更加成熟，相位測量儀器已經(jīng)實(shí)現(xiàn)了系列化和商品化。一種現(xiàn)代相位測量技術(shù)的發(fā)展可分為三個(gè)階段：***階段是早期的阻抗法、和差法、三電壓法、對比法和平衡法。雖然方法簡單，但測量精度較低，第二階段是數(shù)字化，第三階段是充分利用計(jì)算機(jī)和智能虛擬測量技術(shù)，使設(shè)計(jì)過程**簡化，功能增強(qiáng)，使相應(yīng)的產(chǎn)品更加精確和實(shí)用。同時(shí)，各種新的算法也出現(xiàn)了。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p><p> 相位噪聲通常界說為在某-給定偏移頻率處的dBc/Hz值，其中，dBc是以dB為單位的該頻率處功率與總功率的比值。- -個(gè)振蕩器在某一偏移頻率處的相位噪聲界說為在該頻率處1Hz帶寬內(nèi)的信號功率與信號的總功率比值。 </p> <p> 相位差兩個(gè)頻率相同的溝通電相位的差叫做相位差，或許叫做相差。這兩個(gè)頻率相同的溝通電，可所以兩個(gè)溝通電流，可所以兩個(gè)溝通電壓，可所以兩個(gè)溝通電動勢，也可所以這三種量中的任何兩個(gè)。 </p> <p> 例如研究加在電路上的溝通電壓和經(jīng)過這個(gè)電路的溝通電流的相位差。假如電路是純電阻，那么溝通電壓和溝通電流的相位差等于零。也就是說溝通電壓等于零的時(shí)分，溝通電流也等于零，溝通電壓變到比較大值的時(shí)分，溝通電流也變到比較大值。這種情況叫做同相位，或許叫做同相。假如電路含有電感和電容,溝通電壓和溝通電流的相位差一般是不等于零的，也就是說一般是不同相的，或許電壓超前于電流，或許電流超前于電壓。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 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)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇光軸測量儀供應(yīng)商,光軸測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637447611766030633/7564110.png"></div><p style="text-indent:25px">相位是關(guān)于一個(gè)波，特定的時(shí)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(diǎn)的標(biāo)度。相位描繪信號波形改動的衡量，通常以度(視點(diǎn))作為單位，也稱作相角。當(dāng)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(yīng)用在科學(xué)領(lǐng)域，如數(shù)學(xué)、物理學(xué)等。例如:在函數(shù)y=Acos(∞x+φ)中，Wx+中稱為相位。在astrolog32中點(diǎn)擊ALTIFT+A可以顯示相位設(shè)定菜單。在溝通電中，相位是反映溝通電任何時(shí)刻的情況的物理量。溝通電的大小和方向是隨時(shí)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(shí)值，I是溝通電流的比較大值，f是溝通電的頻率，t是時(shí)刻。跟著時(shí)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(fù)的比較大值,從負(fù)的比較大值變到零。在三角函數(shù)中2Jft相當(dāng)于弧度，它反映了溝通電任何時(shí)刻地點(diǎn)的情況，是在增大仍是在減小，是正的仍是負(fù)的等等。因而把2兀ft叫做相位，或許叫做相。軸角度精度：±0.05°（精度業(yè)內(nèi)比較高）。江蘇光軸測量儀供應(yīng)商</p><p style="text-indent:25px">可溯源性:可提供計(jì)量檢測報(bào)告。江蘇光軸測量儀供應(yīng)商</p><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(diǎn)（設(shè)為a點(diǎn)），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(shí)，可將Uab或Uca中較大的一個(gè)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(diǎn)（設(shè)為a點(diǎn)），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(shí)，可將Uab或Uca中較大的一個(gè)信號電壓分壓，使分壓后兩信號的數(shù)值相等。江蘇光軸測量儀供應(yīng)商</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2990341.html</p></div></div></div></div></div><div id="dxzbif4" class="page-right twoColRt"><div id="wgspmys" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jy3jlnr" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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