FANUC A06B-6151-H045#H580撤掉直流電源,進行對齊驗證:
1.用示波器觀察旋變的SIN信號和電機的UV線反電勢波形;
2.轉(zhuǎn)動電機軸,驗證旋變的SIN信號包絡(luò)過零點與電機的UV線反電勢波形由低到高的過零點重合。
這個驗證方法,也可以用作對齊方法。
此時SIN信號包絡(luò)的過零點與電機電角度相位的-30度點對齊。
FANUC A06B-6151-H045#H580 如果想直接和電機電角度的0度點對齊,可以考慮:
1.用3個阻值相等的電阻接成星型,然后將星型連接的3個電阻分別接入電機的UVW三相繞組引線;
2.以示波器觀察電機U相輸入與星型電阻的中點,就可以近似得到電機的U相反電勢波形;
3.依據(jù)操作的方便程度,調(diào)整編碼器轉(zhuǎn)軸與電機軸的相對位置,或者編碼器外殼與電機外殼的相對位置;
4.一邊調(diào)整,一邊觀察旋變的SIN信號包絡(luò)的過零點和電機U相反電勢波形由低到高的過零點,終使這2個過零點重合,鎖定編碼器與電機的相對位置關(guān)系,完成對齊。
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