Stochastic Resonance with a Joint Woods-Saxon and Gaussian Potential for Bearing Fault Diagnosis

Figure 14

Optimal outputs of different models with inner-race fault signal: (a) original waveform and its power spectrum, (b) envelope signal and its spectrum filtered with [500 Hz and 2500 Hz], (c) output of bistable SR model and its spectrum with =0.8, 𝑏=38, (d) output of WSGSR model and its power spectrum with 𝑉₁=10, 𝑅₁=0.5, 𝑎=0.1, and 𝑉₂=0 (WSSR), and (e) output of WSGSR model and its power spectrum with 𝑉₁=12, 𝑅₁=1, 𝑎=0.2, 𝑉₂=1, and 𝑅₂=0.45.

(a)

(b)

(c)

(d)

(e)