Study and application of typical fast kurtogram

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 109-114.

Ma Xinna 1 Yang Shaopu 2

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Abstract

In practical engineering, the causes and types of faults occurred on the specific mechanical components are typical. On the basis of analyzing fast kurtogram, the typical fast kurtogram is presented in the paper. With the fast kurtogram idea of hierarchy and selection of center frequency, the typical fast kurtogram takes three times harmonic of the characteristic frequency as bandwidth to quickly find the frequency range with the maximum spectral kurtosis. This algorithm is used to automatically select filter’s parameters of demodulated resonance. In order to verify the validity of the typical fast kurtogram, experiments are carried out on rolling bearing with the experiment platform of freight car. Demodulated resonance based on typical fast kurtogram is used to fault diagnosis and recognition. The results demonstrate the proposed algorithm is reliable and can meet the engineering application.

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Typical fast kurtogram / fault diagnosis / rolling bearing / demodulated resonance

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Ma Xinna 1 Yang Shaopu 2 . Study and application of typical fast kurtogram[J]. Journal of Vibration and Shock, 2016, 35(15): 109-114

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