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wljenlxl
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樓主  發(fā)表于: 2014-03-29 17:16
大蝦們 小弟又碰到問(wèn)題了 特此上來(lái)求教各位了  問(wèn)題如下
我在做一個(gè)項目 其中有一點(diǎn)是要紙張寬度達到要求則下一步動(dòng)作 而我現在是要如何才能測得這個(gè)紙張是否合格了  只用一個(gè)傳感器來(lái)做的  
先謝謝各位了
king_king2
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1樓  發(fā)表于: 2014-03-29 19:24
個(gè)人覺(jué)得看你要求的精度是多少了！可以用一對小孔徑的光電傳感器按裝在傳動(dòng)軸上，然后測量光電傳感沒(méi)遮蔽期間，傳動(dòng)軸的動(dòng)作距離
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