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

<div>Vibration signal of the time domain and frequency domain under the normal state with 5 dB white noise. (a) Original signal. (b) Filtered signal.</div>

Shock and Vibration

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Figure 6

Figure 6: Research on Feature Extraction Method of Engine Misfire Fault Based on Signal Sparse Decomposition 