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SCHNEIDER MTN681829
上例即在測完此圖后兩小時轉(zhuǎn)子抱軸。在診斷這些假冒偽劣軸承故障時，要注意多積累平時優(yōu)質(zhì)軸承在設(shè)備上正常運行的頻譜和振動時域情況，便于在出現(xiàn)此類異常頻譜時能及時判斷出軸承故障，避免設(shè)備事故。實用的滾動軸承快速診斷技巧我們在實際狀態(tài)監(jiān)測中，往往只需判斷滾動軸承好壞，能用多長時間，而精密分析及診斷中診斷軸承某個部位故障往往實用性不大。實用中精密診斷由于受工況等因素影響，時常找不出滾動軸承對應(yīng)的特征頻率。雖然近幾年發(fā)展出的小波分析與快速共振動解調(diào)分析技術(shù)比較準確，但所需設(shè)備投入較大，還需進行較多分析，現(xiàn)場故障診斷人員一般較少應(yīng)用。
