Predictive Modeling of a Two-Stage Gearbox towards Fault Detection

Figure 8

Spectrum analysis of experimental data and model results for 820 rpm constant speed test: (a) healthy data, (b) healthy model, (c) damaged (missing tooth) data, and (d) damaged model. ①: 1st-stage gear mesh frequency; ②: 2nd-stage gear mesh frequency.

(a)

(b)

(c)

(d)