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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>江蘇先進相位差測量儀價格實惠,相位差測量儀</p><p><span>***更新：</span>2020-10-21 10:08:18</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="2autkrn" 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(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="jia0lkg" class="page-proshow02"><p class="title">詳細說明</p><div id="7rocjfr" class="box"><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(zhuǎn)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(jīng)過各自的衰減電路被衰減成為振幅在0.6V到2.0V的基準(zhǔn)電壓，然后送至相應(yīng)的整形電路整形為方波，此時對稱調(diào)整電路會對這兩個信號進行對稱調(diào)整，使得測量結(jié)果更準(zhǔn)確，這樣就得到了兩個同頻方波信號，再經(jīng)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，江蘇先進相位差測量儀價格實惠，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(nèi)所填充的脈沖個數(shù), n2為T時間內(nèi)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，江蘇先進相位差測量儀價格實惠，江蘇先進相位差測量儀價格實惠,才能保證整個電路的安全和測量的準(zhǔn)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(nèi)的基準(zhǔn)信號，這就需要通過衰減器來實現(xiàn).偏光片吸收軸角度、偏振片偏振方向。江蘇先進相位差測量儀價格實惠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇先進相位差測量儀價格實惠,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304281612314453/3724707.png"></div><p style="text-indent:25px">滯后的相位值都為π的一半，或者說90°.在計算電路電流有效值時，電容電流超前90，電感落后90，可用矢量正交分解加合.加在晶體管放大器基極上的交流電壓和從集電極輸出的交流電壓，這兩者的相位差正好等于180°.這種情況叫做反相位，或者叫做反相.正弦量正交（90°）和反相（180°）都是特殊的相位差.目前，國內(nèi)相位差測量儀生產(chǎn)廠家或研究單位明顯存在著技術(shù)老化問題，其采用的器件、方法和技術(shù)與技術(shù)先進國家有較大的的差距。而**近發(fā)展的先進的計算機技術(shù)、電子技術(shù)等卻由技術(shù)、資金、管理等方面的原因未能應(yīng)用于相位測量技術(shù)，因此國內(nèi)相位測量的水平與國外水平有著相當(dāng)大的差距。同時，隨著**和科教等領(lǐng)域的發(fā)展，迫切需要高精度高性能的相位測量系統(tǒng)，而且在一些特殊工程領(lǐng)域，還需要測量儀器具備其它特殊功能。由此可見，為縮小這些差距，對高精度相位測量算法的研究和相位測量系統(tǒng)的設(shè)計刻不容緩。本文介紹的是一套較完整的高精度相位差測量儀，提高相位及頻率參數(shù)的測量精度，并擴展測相系統(tǒng)功能，由移相網(wǎng)絡(luò)模塊、相位差測量模塊及頻率測量模塊三大部分構(gòu)成，其系統(tǒng)功能主要是進行相位差測量及頻率和幅度測量。江蘇國產(chǎn)相位差測量儀售后服務(wù)偏光片吸收軸角度、偏振片偏振方向、波片快軸方向。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇先進相位差測量儀價格實惠,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282372529297/3872049.png"></div><p style="text-indent:25px">相位調(diào)整相位調(diào)整是指在有些**聲響箱上加裝的一個操控機構(gòu)。用于對**聲響箱所重放出的聲響稍許加以推遲，從而讓**聲響箱的輸出能夠和前置主音箱同相位，即具有相同的時間聯(lián)系。相位噪聲相位噪聲是頻率域的概念，是對信號時序改變的另-種測量方法，其結(jié)果在頻率域內(nèi)顯示。如果沒有相位噪聲，那么振蕩器的整個功率都應(yīng)集中在頻率f=fo處。但相位噪聲的出現(xiàn)將振蕩器的一部分功率擴展到相鄰的頻率中去，產(chǎn)生了邊帶(si deband)。從圖2中能夠看出，在離中心頻率-定合理距離的偏移頻率處，邊帶功率滾降到1/fm，fm是該頻率偏離中心頻率的差值。相位噪聲通常界說為在某-給定偏移頻率處的dBc/Hz值，其間，dBc是以dB為單位的該頻率處功率與總功率的比值。一個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 style="text-indent:25px">相位的概念? 相位(phase)是對于一個波，特定的時刻在它循環(huán)中的位置：一種它是否在波峰、波谷或它們之間的某點的標(biāo)度。相位描述信號波形變化的度量，通常以度?（角度）作為單位，也稱作相角。?當(dāng)信號波形以周期的方式變化，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(ωx+φ)中，ωx+φ稱為相位。在astrolog32中點擊ALT+SHIFT+A可以顯示相位設(shè)定菜單。? 在交流電中，相位是反映交流電任何時刻的狀態(tài)的物理量。交流電的大小和方向是隨時間變化的。比如正弦交流電流，它的公式是i=Isin2πft。相位差測亮范圍: 0-20000nm 相位差重復(fù)性精度: 3σ≤ 0.1 nm。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇先進相位差測量儀價格實惠,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304283374638672/8786600.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，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、變電所的相位校驗和相序校驗，具有核相、測相序、驗電等功能。具備很強的抗煩擾性，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。由接收器接收并進行相位比較,對核相后的成果定性。因本產(chǎn)品是無線傳輸，真實到達安全可靠、快速準(zhǔn)確，習(xí)氣各種核相場合。 </p> <p> <br /> </p> <p> <br /> 測量重復(fù)性：0.02° （精度業(yè)內(nèi)比較高）。江蘇先進相位差測量儀價格實惠</p><p style="text-indent:25px">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)。江蘇先進相位差測量儀價格實惠</p><p> 相位差測試儀的發(fā)展與現(xiàn)狀 </p> <p> 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。現(xiàn)代相位測量技術(shù)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(gòu)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(shù)，從而**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)。 </p> <p> <br /> </p> <p> <br /> 江蘇先進相位差測量儀價格實惠</p><p style="text-indent:25px">蘇州千宇光學(xué)科技有限公司主要經(jīng)營范圍是機械及行業(yè)設(shè)備，擁有一支專業(yè)技術(shù)團隊和良好的市場口碑。千宇光學(xué)科技致力于為客戶提供良好的高低溫光電綜合系統(tǒng)，彎折機，，，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事機械及行業(yè)設(shè)備多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。千宇光學(xué)科技立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: 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