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

Figure 6

Time domain waveforms of the nine operating states: (a) fault type I, (b) fault type II, (c) fault type III, (d) fault type IV (normal state), (e) fault type V, (f) fault type VI, (g) fault type VII, (h) fault type VIII, and (i) fault type IX.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)