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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！
jiouling
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1樓  發(fā)表于: 2009-11-23 22:29
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
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