The Study of Incipient Fault Diagnosis Method Based on Phase Space Independent Component Analysis and Contribution Coefficient of Kurtosis

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (12) : 155-159.

CHEN Jian-guo 1 WANG Zhen1 LI Hong-kun2

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Abstract

Independent component analysis method has the characteristics of the vibration source separation in the analysis of signal, But because coefficient fault signal of mechanical equipment has the characteristics of strong background noise and complex vibration source, independent component analysis method can't obtain satisfied effect on which applied to extract coefficient fault from single channel strong background noise signal. Therefore, The phase space of independent component method is proposed to separate and reconstruct the incipient fault signal, the contribution coefficient of kurtosis is proposed to extract the incipient fault characteristic information from reconstructed signal. This method is applied into the incipient fault signal of bearing in extruder's gearbox, the incipient fault character information is extracted successfully and the faulty component is identified accurately. The experiments show that the phase space of independent component analysis and the contribution coefficient of kurtosis method in the put forward a feasible research direction for incipient fault detection.

Key words

phase space of independent component analysis / kurtosis / contribution coefficient of kurtosis / incipient fault

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CHEN Jian-guo 1 WANG Zhen1 LI Hong-kun2 . The Study of Incipient Fault Diagnosis Method Based on Phase Space Independent Component Analysis and Contribution Coefficient of Kurtosis[J]. Journal of Vibration and Shock, 2016, 35(12): 155-159

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