Bearing Fault Feature Extraction Method Based on GA-VMD and Center Frequency

Figure 10

The characteristic classification results of the center frequency of each IMF. (a) IMF1. (b) IMF2. (c) IMF3. (d) IMF4. (e) IMF5. (f) IMF6 (g). IMF7 (h). IMF8. (i) IMF9.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)