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樓主  發(fā)表于: 2012-10-20 13:00
伺服電機做位置控制定位不準,如何處理?

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① 首先確認控制器實(shí)際發(fā)出的脈沖當前值是否和預想的一致,如不一致則檢查并修正程序;

② 監視伺服驅動(dòng)器接收到的脈沖指令個(gè)數是否和控制器發(fā)出的一致,如不一致則檢查控制線(xiàn)電纜;

③ 檢查伺服指令脈沖模式的設置是否和控制器設置得一致,如CW/CCW還是脈沖+方向;

④ 伺服增益設置太大,嘗試重新用手動(dòng)或自動(dòng)方式調整伺服增益;

⑤ 伺服電機在進(jìn)行往復運動(dòng)時(shí)易產(chǎn)生累積誤差,建議在工藝允許的條件下設置一個(gè)機械原點(diǎn)信號,在誤差超出允許范圍之前進(jìn)行原點(diǎn)搜索操作;

⑥ 機械系統本身精度不高或傳動(dòng)機構有異常(如伺服電機和設備系統間的聯(lián)軸器部發(fā)生偏移等)。

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