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zcm2009
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樓主  發(fā)表于: 2009-06-25 16:10
請問(wèn)膜卷傳動(dòng)過(guò)程中,因從動(dòng)軸逐漸變小,主動(dòng)軸逐漸變大但還要勻速傳動(dòng),有什么好的辦法,謝謝!
mechatronics
即使很緩慢,但起碼有一點(diǎn)一點(diǎn)的和目標靠近。
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1樓  發(fā)表于: 2009-11-24 08:07
引用
引用第10樓jiouling于2009-11-23 22:29發(fā)表的  :
個(gè)人認為:收卷和驅動(dòng)都要用帶編碼器的變頻電機 ,用矢量變頻器控制這兩臺電機,放卷用磁粉離合器控制張力,在驅動(dòng)軸上加裝一個(gè)增量形的編碼器,用來(lái)計數。放卷也要加一個(gè),用來(lái)計算膜卷當前的數據。再能過(guò)膜的參數:厚度等,膜轉一圈就是兩上厚數,從編碼器上的數據可以知道轉了多少?這樣就可以求出當前的直徑變化,從而減小,增大放卷,收卷張力。最終達到恒張力的目的

我看我們公司絕大部分的設備都是使用此中辦法實(shí)現~
非淡泊無(wú)以明志
非寧靜無(wú)以致遠

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