Application of resonance demodulation in rolling bearing fault feature extraction based on Infogram

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (12) : 29-34.

XIA Jun-zhong1，YU Ming-qi1，HUANG Cai2，WANG Zhi-an1，LVQi-peng1

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Abstract

Selecting proper parameters (center frequency and bandwidth) of a bandpass filter is crucial to resonance demodulation. However, those parameters selected by the fast kurtogram were not satisfactory; therefore, Infogram was proposed. Firstly, its concept and peculiarity were investigated. Then to compare the application effect of the Infogram with the fast kurtogram, the simulated signals with the impulsive noise and high repetition rate were designed. The Infogram was better than the fast kurtogram for identification ability of resonance frequency bands. Finally the Infogram was applied to resonance demodulation of the vibration signals of faulted bearings, and the feature parameters (fault characteristic frequency and its harmonics, sidebands, and etc.) of faulted bearings were clearly observed. The result shows the bands selected by the Infogram have two obvious advantages: fault characteristics are highlighted and fault information is rich.

Key words

rolling element bearing;fault feature extraction / resonance demodulation / fast kurtogram / infogram

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XIA Jun-zhong1，YU Ming-qi1，HUANG Cai2，WANG Zhi-an1，LVQi-peng1. Application of resonance demodulation in rolling bearing fault feature extraction based on Infogram[J]. Journal of Vibration and Shock, 2018, 37(12): 29-34

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