Internal Combustion Engine Fault Identification Based on FBG Vibration Sensor and Support Vector Machines Algorithm

Table 4

Feature vector based on Wavelet decomposition and reconstruction.

Operating state	No.	vibration energy feature vector
			1	29171.56	125.61	419.31	190.47	916.02
Fault type I	2	28467.95	314.92	536.79	310.96	615.85
	3	29162.03	657.91	1198.32	743.29	1532.70
	1	34728.80	157.96	446.43	203.43	305.95
Fault type II	2	37501.9	442.93	787.90	364.83	757.68
	3	41248.90	604.38	1035.80	783.93	1459.29
	1	51984.62	2601.75	2774.43	440.82	774.74
Fault type III	2	66161.88	3606.90	4286.53	2143.04	3459.64
	3	55689.37	10129.43	4527.10	3965.93	7854.19
Fault type IV	1	86067.38	133.12	327.000	195.39	288.40
(Normal)	2	84843.81	267.18	464.92	343.86	844.38
	3	84297.88	542.58	1182.75	710.60	2152.55
	1	70662.03	155.80	281.01	201.87	520.20
Fault type V	2	70043.63	302.41	671.87	496.92	1467.39
	3	70177.78	611.64	1671.62	703.10	1696.39
	1	66528.25	338.03	491.06	398.17	1325.69
Fault type VI	2	66243.20	673.17	1596.44	839.55	1802.04
	3	67345.94	956.43	1467.58	1159.19	2497.36
Fault type VII	1	187.27	824.61	876.71	328.32	4278.87
	2	176.31	387.19	104.38	477.13	4155.92
	3	208.67	741.50	100.80	341.36	3565.39
Fault type VIII	1	115.19	304.61	353.27	367.06	4727.75
	2	173.00	608.37	891.72	459.13	3843.63
	3	136.02	962.09	780.94	932.79	4177.78
Fault type IX	1	275.42	163.24	194.65	550.57	5338.03
	2	200.03	109.90	118.59	400.76	4896.44
	3	231.09	130.74	178.99	557.56	6101.87