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

<div>The simulated results using ALIF-OMPK with target sparsity: (a) extracted signal and (b) Hilbert envelope spectrum of signal in (a).</div>

Shock and Vibration

Figure 9: A Feature Extraction Method of Wheelset-Bearing Fault Based on Wavelet Sparse Representation with Adaptive Local Iterative Filtering 