Research on the Sparse Representation for Gearbox Compound Fault Features Using Wavelet Bases

<div>The measured signal and its spectral analysis: (a) the measured signal with compound fault, (b) its frequency spectrum, and (c) its envelope spectrum analysis.</div>

Shock and Vibration

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Figure 12

Figure 12: Research on the Sparse Representation for Gearbox Compound Fault Features Using Wavelet Bases 