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

Figure 6

Simulated bearing fault signal and outputs of different models: (a) periodic unilateral attenuation impulse signal of 100 Hz and mixed signal with noise intensity of 1.8, (b) envelope signal and power spectrum filtered with [600 Hz, 1800 Hz], (c) output of traditional bistable SR model and its power spectrum with 𝑎=1, 𝑏=16, and (d) output of WSGSR model and its power spectrum with 𝑉₁=3, 𝑅₁=0.5, 𝑎=0.4, 𝑉₂=1/64, and 𝑅₂=0.4.

(a)

(b)

(c)

(d)