An Enhanced VMD with the Guidance of Envelope Negentropy Spectrum for Bearing Fault Diagnosis

Figure 10

Results of the simulated signal in Figure 6(b) by different ICF locating methods: (a) optimal mode extracted by the proposed method and (c) its envelope spectrum; (b) optimal mode extracted by EFS and (d) its envelope spectrum.

(a)

(b)

(c)

(d)