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
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