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

Figure 4

Analyzed results of the simulated signal shown in Figure 2(b) by the proposed method: (a) power spectrum obtained by VMD; (b) the number of iterations with central frequencies; (c) kurtosis curve of five decomposed modes; (d) waveform of the second mode; (e) enhanced waveform of the second mode by MTEO; (f) power spectrum of the enhanced waveform by MTEO; (g) enhanced waveform of the second mode by TEO.

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