噪声与振动控制Issue(5)：144-149,6.DOI:10.3969/j.issn.1006-1335.2013.05.031
信号相关性和EEMD-Hilbert包络在滚动轴承故障诊断中的应用
Application of Signal Correlation and EEMD-Hilbert Envelope in Fault Diagnosis of Roller Bearings
佟雨燕 1陆森林1
作者信息
- 1. 江苏大学 汽车与交通工程学院,江苏 镇江,212013
- 折叠
摘要
Abstract
The uncertainty of the center frequency and band width of the band-pass filter in the traditional signal envelope, and the mode aliasing problem of the empirical mode decomposition (EMD) in processing of the nonlinear and non-stationary signal were studied. A new method for earlier fault diagnosis of roller bearings was put forward. In this method, the signal correlation was used as a criterion to get the optimal IMF component of the ensemble empirical mode decomposition (EEMD). Then, the Hilbert envelop demodulation was applied to the IMF component to derive the characteristic frequency of the fault. The experimental results show that the fault patterns of the roller bearing in the earlier stage can be identified accurately and effectively by this method. Therefore, this method can be applied to machinery-equipment fault-processing system.关键词
振动与波/信号相关性/总体经验模态分解/Hilbert包络/滚动轴承/故障诊断Key words
vibration and wave/signal correlation/ensemble empirical mode decomposition/Hilbert envelope/roller bearing/fault diagnosis分类
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佟雨燕,陆森林..信号相关性和EEMD-Hilbert包络在滚动轴承故障诊断中的应用[J].噪声与振动控制,2013,(5):144-149,6.
