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

<div>The collected roller fault signal and its Hilbert envelope spectrum: (a) time-domain waveform and (b) Hilbert envelope spectrum of signal in (a).</div>

Shock and Vibration

fig18

Figure 18

Figure 18: A Feature Extraction Method of Wheelset-Bearing Fault Based on Wavelet Sparse Representation with Adaptive Local Iterative Filtering 