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

<div>Results obtained by EWT: (a) detected boundaries of Fourier spectrum, (b) the 17th subband signal, and (c) Hilbert envelope spectrum of signal in (b).</div>

Shock and Vibration

fig22

Figure 22

Figure 22: A Feature Extraction Method of Wheelset-Bearing Fault Based on Wavelet Sparse Representation with Adaptive Local Iterative Filtering 