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机械设备的组合故障由于其故障的多样性、强弱的不平衡、故障间的相互影响等特性,给全面准确的诊断造成困难。根据机械设备中故障诊断机理,将Hilbert-Huang及EMD方法应用于具有组合缺陷的滚动轴承故障诊断实验中。验证了信号边际谱与故障特征之间的联系,辨析出滚动轴承外圈缺陷和滚动体缺陷的特征量,证明了其分析轴承组合故障的可行性。
The combination of mechanical equipment due to the diversity of its failure, the strength of the imbalance, the interaction between failures and other characteristics, to a comprehensive and accurate diagnosis of difficulties. According to the fault diagnosis mechanism of mechanical equipment, Hilbert-Huang and EMD methods are applied to the fault diagnosis experiment of rolling bearing with combined defects. The relationship between the signal marginal spectrum and the fault features was verified. The characteristics of rolling bearing outer ring defects and rolling elements defects were analyzed. The feasibility of the bearing assembly failure analysis was proved.