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

Table 1

The simulation results of multiorder model parameters’ identification.

Parameter	1	2	3	4	5	6
Frequency (Hz)	2189	3996	5483	5969	7022	7901
Damping ratio	0.0737	0.0286	0.0475	0.0095	0.0992	0.0125