A Novel Method for Adaptive Multiresonance Bands Detection Based on VMD and Using MTEO to Enhance Rolling Element Bearing Fault Diagnosis

Figure 19

Analyzed results of vibration signal in Figure 15(a) by EMD-based demodulation method: (a) kurtosis curve of 17 IMF; (b) envelope waveform of IMF3; (c) envelope spectrum of IMF3; (d) envelope waveform of IMF4; (e) envelope spectrum of IMF4; (f) envelope waveform of IMF5; (g) envelope spectrum of IMF5; (h) envelope waveform of IMF6; (i) envelope spectrum of IMF6; (j) envelope waveform of IMF7; (k) envelope spectrum of IMF7.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)