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| Application of resonance demodulation in rolling bearing fault feature extraction based on Infogram |
| XIA Jun-zhong1，YU Ming-qi1，HUANG Cai2，WANG Zhi-an1，LVQi-peng1 |
1. Military Vehicle Engineering Technology Research Center, Military Transportation Academy， Tianjin 300161, China;
2. Dongguan TR Bearing Co., Ltd., Dongguan 523000, China |
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Abstract Selecting proper parameters (center frequency and bandwidth) of a bandpass 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.
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Received: 12 January 2017
Published: 15 June 2018
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