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玩家100
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樓主  發(fā)表于: 2018-05-15 16:01
各位伺服走脈沖定位控制時(shí),有用到伺服驅動(dòng)器伺服定位完成信號嗎。這個(gè)信號我的理解是為了實(shí)現閉環(huán)控制即plc發(fā)出脈沖,伺服驅動(dòng)器收到plc發(fā)出的脈沖,驅動(dòng)電機走對應的數量的脈沖(通過(guò)伺服電機上的編碼器讀取電機實(shí)際走了多少脈沖),把接收到的脈沖數與編碼器值對比,當它們幾乎(偏差是一個(gè)范圍)相等,則輸出定位完成信號。那么實(shí)際應用時(shí)問(wèn)題來(lái)了,定位信號不是這種方式輸出,而是在在電機啟停時(shí)就有輸出(仿佛沒(méi)有對比的過(guò)程)。想在論壇上請教下有哪些方式能實(shí)現閉環(huán)控制。
nightblueblu
道阻且長(cháng),窮且益堅。
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1樓  發(fā)表于: 2018-05-16 11:38
不應該是把編碼器接收到的脈沖數通過(guò)高速計數反饋到PLC   再跟PLC內部脈沖發(fā)出的脈沖數進(jìn)行比較嗎
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