Stochastic resonance in an asymmetric bistable system driven by mixed periodic force and noises

Zhou Bing-Chang; Xu Wei

doi:10.7498/aps.56.5623

Abstract
The phenomenon of stochastic resonance (SR) in an asymmetric bistable system driven by correlated multiplicative and additive noise and two periodic fields is investigated. Analytic expressions of the signal-to-noise ratio (SNR) for fundamental and higher harmonics are derived using the two-state theory. The SR appears in both fundamental and higher harmonics. Moreover, the suppression exists for higher harmonics. The effects of static asymmetry and the noise intensity and the strength of coupling between noises on the SNR are studied.

Keywords:
asymmetric bistable system /

stochastic resonance /

signal-to-noise ratio /

mixing period signals
Authors and contacts
Zhou Bing-Chang,

Xu Wei

1.
西北工业大学应用数学系,西安 710072
References

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Vol. 56, Issue 10 - 2007-05-20

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