UGTMEM-06LSF61

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UGTMEM-06LSF61
??步進(jìn)電機(jī)的運(yùn)行性能與它的步進(jìn)驅(qū)動(dòng)器有密切的聯(lián)系，可以通過(guò)驅(qū)動(dòng)技術(shù)的改進(jìn)來(lái)克服步進(jìn)電機(jī)的缺點(diǎn)。相對(duì)于其他的驅(qū)動(dòng)方式，細(xì)分驅(qū)動(dòng)方式不僅可以減小步進(jìn)電機(jī)的步距角，提高分辨率，而且可以減少或消除低頻振動(dòng)，使電機(jī)運(yùn)行更加平穩(wěn)均勻。
? ? 總體來(lái)說(shuō)，細(xì)分驅(qū)動(dòng)的控制效果最好。因?yàn)槌Ｓ玫投瞬竭M(jìn)電機(jī)伺服系統(tǒng)沒(méi)有編碼器反饋，所以隨著電機(jī)速度的升高其內(nèi)部控制電流相應(yīng)減小，從而造成丟步現(xiàn)象。所以在速度和精度要求不高的領(lǐng)域，其應(yīng)用非常廣泛細(xì)分驅(qū)動(dòng)精度高，細(xì)分是驅(qū)動(dòng)器將上級(jí)裝置發(fā)出的每個(gè)脈沖按驅(qū)動(dòng)器設(shè)定的細(xì)分系數(shù)分成系數(shù)個(gè)脈沖輸出，比喻步進(jìn)電機(jī)每轉(zhuǎn)一圈為200個(gè)脈沖，如果步進(jìn)電機(jī)驅(qū)動(dòng)器細(xì)分為32，那么步進(jìn)電機(jī)驅(qū)動(dòng)器需要輸出6400個(gè)脈沖步進(jìn)電機(jī)才轉(zhuǎn)一圈。通常細(xì)分有2、4、8、16、32、62、128、256、512….
? ? 在國(guó)外，對(duì)于步進(jìn)系統(tǒng)，主要采用二相混合式步進(jìn)電機(jī)及相應(yīng)的細(xì)分驅(qū)動(dòng)器。但在國(guó)內(nèi)，廣大用戶對(duì)“細(xì)分”還不是特別了解，有的只是認(rèn)為，細(xì)分是為了提高精度，其實(shí)不然，細(xì)分主要是改善電機(jī)的運(yùn)行性能。
? ? 現(xiàn)說(shuō)明如下：
? ??步進(jìn)電機(jī)的細(xì)分控制是由驅(qū)動(dòng)器精確控制步進(jìn)電機(jī)的相電流來(lái)實(shí)現(xiàn)的，以二相電機(jī)為例，假如電機(jī)的額定相電流為3A，如果使用常規(guī)驅(qū)動(dòng)器(如常用的恒流斬波方式)驅(qū)動(dòng)該電機(jī)，電機(jī)每運(yùn)行一步，其繞組內(nèi)的電流將從0突變?yōu)?A或從3A突變到0，相電流的巨大變化，必然會(huì)引起電機(jī)運(yùn)行的振動(dòng)和噪音。
? ? 如果使用細(xì)分驅(qū)動(dòng)器，在10細(xì)分的狀態(tài)下驅(qū)動(dòng)該電機(jī)，電機(jī)每運(yùn)行一微步，其繞組內(nèi)的電流變化只有0.3A而不是3A，且電流是以正弦曲線規(guī)律變化，這樣就大大的改善了電機(jī)的振動(dòng)和噪音，因此，在性能上的優(yōu)點(diǎn)才是細(xì)分的真正優(yōu)點(diǎn)。由于細(xì)分驅(qū)動(dòng)器要精確控制電機(jī)的相電流，所以對(duì)步進(jìn)電機(jī)驅(qū)動(dòng)器要有相當(dāng)高的技術(shù)要求和工藝要求，成本亦會(huì)較高。
? ? 注意，國(guó)內(nèi)有一些驅(qū)動(dòng)器采用“平滑”來(lái)取代細(xì)分，有的亦稱為細(xì)分，但這不是真正的細(xì)分，望廣大用戶一定要分清兩者的本質(zhì)不同：
? ? 1.“平滑”并不精確控制電機(jī)的相電流，只是把電流的變化率變緩一些，所以“平滑”并不產(chǎn)生微步，而細(xì)分的微步是可以用來(lái)精確定位的。
? ? 2.電機(jī)的相電流被平滑后，會(huì)引起電機(jī)力矩的下降，而細(xì)分控制不但不會(huì)引起電機(jī)力矩的下降，相反，力矩會(huì)有所增加。

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15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營(yíng)：本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測(cè)速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。

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