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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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>福建電動(dòng)缸優(yōu)缺點(diǎn)</p><p><span>***更新：</span>2020-06-10 14:23:24</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="vwmnza3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-61637356</p><p><span>地址: </span>大葉公路5225號(hào)1幢2370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="7ja8kgu" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3xyughs" class="box"><p><p style="text-indent:25px">電動(dòng)缸的工作原理是以電力作為直接動(dòng)力源，采用各種類型的電機(jī)(如AC伺服電機(jī)、步進(jìn)伺服電機(jī)、DC伺服電機(jī)）帶動(dòng)不同形式的絲杠(或螺母)旋轉(zhuǎn)，福建電動(dòng)缸優(yōu)缺點(diǎn)，并通過構(gòu)件間的螺旋運(yùn)動(dòng)轉(zhuǎn)化為螺母(或絲杠)的直線運(yùn)動(dòng)，再由螺母(或絲杠)帶動(dòng)缸筒或負(fù)載做往復(fù)直線運(yùn)動(dòng)，福建電動(dòng)缸優(yōu)缺點(diǎn)，福建電動(dòng)缸優(yōu)缺點(diǎn)。傳統(tǒng)的電動(dòng)缸一般采用電動(dòng)機(jī)驅(qū)動(dòng)絲杠旋轉(zhuǎn)，并通過構(gòu)件間的螺旋運(yùn)動(dòng)轉(zhuǎn)化為螺母的直線運(yùn)動(dòng)。近些年新興的“螺母反轉(zhuǎn)型”電動(dòng)缸(如整體式行星滾柱絲杠電動(dòng)缸)采用相反的驅(qū)動(dòng)方式，即驅(qū)動(dòng)螺母旋轉(zhuǎn)，并通過構(gòu)件間的螺旋運(yùn)動(dòng)轉(zhuǎn)化為絲杠的直線運(yùn)動(dòng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建電動(dòng)缸優(yōu)缺點(diǎn)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129743811601563/1451955.jpg"></div><p> 匯率結(jié)算風(fēng)險(xiǎn)，又稱匯率交易風(fēng)險(xiǎn)，是一般企業(yè)以外幣計(jì)價(jià)進(jìn)行貿(mào)易及非貿(mào)易交易時(shí)，因?qū)斫Y(jié)算時(shí)所適用的外匯匯率未確定而產(chǎn)生的匯率風(fēng)險(xiǎn)。 </p> <p> <br /> </p> <p> 企業(yè)在從事貿(mào)易及非貿(mào)易業(yè)務(wù)的過程中，從雙方達(dá)成協(xié)議，到結(jié)清債權(quán)債務(wù)，一般需要幾個(gè)月甚至1年或更長的時(shí)間，而在此期間，若計(jì)價(jià)貨幣匯率發(fā)生變動(dòng)，必將使交易雙方中的某一方蒙受損失，這便產(chǎn)生了匯率結(jié)算風(fēng)險(xiǎn)。例如，美國某企業(yè)從日本進(jìn)口一批機(jī)械設(shè)備。雙方于某年3月1日簽約，約定以日元計(jì)價(jià)，貨款為l400萬日元，支付日期為同年6月1日。假定3月1日美元與日元的匯率為l美元=140日元，則美國需要支付10萬美元購買l400萬日元。 </p> <p> <br /> </p> <p> 如果到了6月1日實(shí)際付款時(shí)，日元升值，美元貶值，匯率變?yōu)閘美元=l20日元，則美國企業(yè)需要支付約11.667萬美元來購買l400萬日元，比原來多付1.667萬美元。美國企業(yè)進(jìn)口成本因日元升值而相應(yīng)地增加。匯率結(jié)算風(fēng)險(xiǎn)從簽訂匯率交易合同確定以外幣計(jì)價(jià)交易金額時(shí)產(chǎn)生，一直持續(xù)到實(shí)際結(jié)算時(shí)消除。一般而言，結(jié)算風(fēng)險(xiǎn)中受險(xiǎn)部分是確定的，無論是出口還是進(jìn)口，從簽訂合同到貨物裝船及**終結(jié)算為止，所有未結(jié)算的余額即為受險(xiǎn)部分。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建電動(dòng)缸優(yōu)缺點(diǎn)" src="http://tyunfile.71360.com/UploadFile/shdign/637129649286884766/8565990.jpg"></div><p style="text-indent:25px">本測驗(yàn)渠道現(xiàn)在首要用于軸線方向運(yùn)動(dòng)參數(shù)的測驗(yàn)，所以方位檢查選用磁柵尺。測驗(yàn)體系原理圖如圖1所示。IPC與運(yùn)動(dòng)操控卡經(jīng)過PCI總線進(jìn)行數(shù)據(jù)通信，IPC作為上位機(jī)，經(jīng)過開發(fā)的依據(jù)WINDOWS的測驗(yàn)軟件完結(jié)人機(jī)界面的交互，首要擔(dān)任一些實(shí)時(shí)性請(qǐng)求不是很高的作業(yè)，如界面交互、圖形顯現(xiàn)、操控指令發(fā)送、接收運(yùn)動(dòng)操控卡收集到的現(xiàn)場數(shù)據(jù)、數(shù)據(jù)處理等。運(yùn)動(dòng)操控卡作為下位操控器，首要擔(dān)任一些實(shí)時(shí)性請(qǐng)求較高的使命，如伺服電機(jī)運(yùn)動(dòng)操控、方位檢查脈沖計(jì)數(shù)、緊急狀況處理等。圖1所示為單個(gè)電動(dòng)缸的測驗(yàn)狀況，假如為多個(gè)電動(dòng)缸一起測驗(yàn)，則可相應(yīng)地添加伺服驅(qū)動(dòng)器和伺服電機(jī)，并依據(jù)狀況挑選相應(yīng)的運(yùn)動(dòng)操控卡。體系選用性價(jià)對(duì)比高的研華工控機(jī)IPC-610-H和國內(nèi)對(duì)比有名的雷賽DMC5480運(yùn)動(dòng)操控卡。DMC5480是一款依據(jù)PCI總線的脈沖式運(yùn)動(dòng)操控卡，同一計(jì)算機(jī)體系**多可支撐8塊卡一起運(yùn)轉(zhuǎn)，**多可一起操控32軸。DMC5480開發(fā)了Windows環(huán)境下的設(shè)備驅(qū)動(dòng)程序和運(yùn)動(dòng)操控函數(shù)動(dòng)態(tài)鏈接庫，用戶只需用VC或VisualBasic規(guī)劃程序并調(diào)用DMC5480函數(shù)庫中的有關(guān)運(yùn)動(dòng)操控函數(shù)即可。DMC5480的函數(shù)庫處理了一切與運(yùn)動(dòng)操控有關(guān)的復(fù)雜問題，這么程序開發(fā)者能夠?qū)Ｐ挠趹?yīng)用程序自身的開發(fā)上。</p><div 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