The Study of Incipient Fault Diagnosis Method Based on Phase Space Independent Component Analysis and Contribution Coefficient of Kurtosis
CHEN Jian-guo 1 WANG Zhen1 LI Hong-kun2
1.college of mechanical engineering, Dalian University, Dalian，116622
2. Institute of vibration engineering, Dalian University of Technology, Dalian, 116023
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.
陈建国1 王珍1 李宏坤2. 基于相空间独立分量分析及峭度贡献系数的早期故障分析方法研究[J]. 振动与冲击, 2016, 35(12): 155-159.
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. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(12): 155-159.
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