A Feature Extraction Method of Wheelset-Bearing Fault Based on Wavelet Sparse Representation with Adaptive Local Iterative Filtering

<div>Results obtained by ALIF-OMPK: (a) extracted signal and (b) Hilbert envelope spectrum of signal in (a).</div>

Shock and Vibration

Figure 15: A Feature Extraction Method of Wheelset-Bearing Fault Based on Wavelet Sparse Representation with Adaptive Local Iterative Filtering 