Research on Feature Extraction Method of Engine Misfire Fault Based on Signal Sparse Decomposition

<div>The results of the engine single-cylinder misfire fault signal processed by wavelet decomposition. (a) Noiseless. (b) Under 5 dB noise.</div>

Shock and Vibration

Figure 13: Research on Feature Extraction Method of Engine Misfire Fault Based on Signal Sparse Decomposition 