Wavelet Transform-based Higher-order Statistics for Fault Diagnosis in Rolling Element Bearings:
作者： Fucai Li , Guang Meng , Lin Ye , Peng Chen
关键词: Wavelet 、 Electronic engineering 、 Engineering 、 Wavelet packet decomposition 、 Stationary wavelet transform 、 Second-generation wavelet transform 、 Lifting scheme 、 Harmonic wavelet transform 、 Discrete wavelet transform 、 Wavelet transform 、 Algorithm
摘要: Signal processing plays a pivotal role in fault diagnostics of mechanical systems. An approach, viz. wavelet transform-based higher-order statistics, was developed this paper for diagnosis rolling element bearings. In the transform (discrete and packet transform) introduced into fourth-order statistic, kurtosis. Thereinto, discrete kurtosis (DWTK) applied to signals get higher resolution low-frequency bands1 on other hand, (WPTK) obtain relatively high high-frequency bands comparison with DWTK. DWTK, WPTK (WTK) curves were calibrate in-field benchmark signals, whereby non-stationary transients singularity vibration attributed damage detected. WTK collected from bearing different se...
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