Open AccessStochastic resonance in an asymmetric bistable system driven by correlated noise
Author(s) -
Zhou Bing-Chang,
Wei Xu
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.2035
Subject(s) - stochastic resonance , bistability , colors of noise , multiplicative function , white noise , multiplicative noise , asymmetry , physics , noise (video) , amplitude , signal (programming language) , monotonic function , colored , intensity (physics) , coupling (piping) , statistical physics , mathematical analysis , mathematics , optics , quantum mechanics , statistics , signal transfer function , computer science , materials science , telecommunications , artificial intelligence , analog signal , image (mathematics) , composite material , transmission (telecommunications) , metallurgy , programming language
The phenomenon of stochastic resonance (SR) in a bistable system subject to correlated multiplicative colored and additive white noises and a periodic rectangular signal with a constant component is investigated in the unified colored noise approximation and by applying the two-state theory. The expression of the signal-to-noise ratio (SNR) is obtained for arbitrary signal amplitude. The SNR is a non-monotonic function of intensities of multiplicative colored and additive white noisescorrelation time of multiplicative colored noise and the strength of the coupling between noises so SR appears in the bistable system. Meanwhile it is more effective to control SR through adjusting the additive white noise intensity than adjusting the multiplicative colored noise intensity. Moreoverthe effects of potential asymmetry and the strength of the coupling between noises on SNR are opposite.