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

Figure 9

Outputs of different models with driving frequency of 200 Hz: (a) original waveform and its power spectrum with 𝐴=0.8,√2𝐷=1.5, (b) envelope signal and its spectrum filtered with [800 Hz and 1200 Hz], (c) output of bistable SR model and its spectrum with 𝑎=0.2, 𝑏=46, (d) output of WSGSR model and its power spectrum with 𝑉₁=8, 𝑅₁=0.45, 𝑎=0.7, and 𝑉₂=0 (WSSR), and (e) output of WSGSR model and its power spectrum with 𝑉₁=14, 𝑅₁=0.2, 𝑎=0.4, 𝑉₂=0.7, and 𝑅₂=0.5.

(a)

(b)

(c)

(d)

(e)