Yan Tianxiao, Zhang Ruiliang, Wang Tie, et al. Research of Bearing Compound Fault Diagnosis based on EEMD and Hilbert Envelope Analysis[J]. 2016,40(6):132-135.
Yan Tianxiao, Zhang Ruiliang, Wang Tie, et al. Research of Bearing Compound Fault Diagnosis based on EEMD and Hilbert Envelope Analysis[J]. 2016,40(6):132-135. DOI: 10.16578/j.issn.1004.2539.2016.06.029.
In view of bearing compound fault of the low signal-to-noise ratio of the gear transmission system,firstly,the fault signal is decomposed to the order of IMFs and residue. Taking the kurtosis as characteristic index,the kurtosis value of the IMF components is calculated and the IMF component which has the maximum kurtosis is demodulated by Hilbert envelope. The final result shows that the method can effectively improve the signal-to-noise ratio,the bearing fault characteristic frequency can be extracted from strong background noise of gear transmission system.
关键词
滚动轴承复合故障诊断集合经验模式分解希尔伯特变化包络
Keywords
Rolling bearingCompound fault diagnosisEnsemble empirical mode decompositionHilbert transformEnvelope