Fault Diagnosis of Planetary Gearbox Based on Motor Current Signal Analysis

Figure 4

Amplitude spectrum analysis of different types of faults. (a) Bearing inner race fault, (b) bearing outer race fault, (c) bearing ball fault, (d) planet gear fault, (e) planet bearing inner race fault, (f) sun gear fault. (g) ring gear fault, and (h) no fault.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)