Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises

doi:10.1088/1674-1056/21/8/080502

中国物理B ›› 2012, Vol. 21 ›› Issue (8): 80502-080502.doi: 10.1088/1674-1056/21/8/080502

Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises

郭锋^a, 程晓锋^b, 李少甫^a, 曹文^a, 黎恒^a

a School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
b Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

收稿日期:2011-11-23 修回日期:2012-02-29 出版日期:2012-07-01 发布日期:2012-07-01
基金资助:
Project supported by the Open Fund of Key Laboratory of Education-Ministry Collaboration-Built (Southwest University of Science and Technology)-Manufacturing Process Test Technology, China (Grant No. 11zxzk08).

Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises

Guo Feng (郭锋)^a, Cheng Xiao-Feng (程晓锋)^b, Li Shao-Fu (李少甫)^a, Cao Wen (曹文)^a, Li Heng (黎恒)^a

a School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
b Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

Received:2011-11-23 Revised:2012-02-29 Online:2012-07-01 Published:2012-07-01
Contact: Cheng Xiao-Feng E-mail:cxf67@163.com
Supported by:
Project supported by the Open Fund of Key Laboratory of Education-Ministry Collaboration-Built (Southwest University of Science and Technology)-Manufacturing Process Test Technology, China (Grant No. 11zxzk08).

摘要/Abstract

摘要： The entropic stochastic resonance (ESR) in a confined system subjected to dichotomous noise and white noise and driven by a periodic sinusoidal force along the x axis of the structure and a time-dependent force in the declining direction, is investigated. Under the adiabatic approximation condition and based on two-state theory, the expression of the output signal-to-noise ratio (SNR) is obtained. The results show that the SNR is a non-monotonic function of the strengths of dichotomous noise, white noise, and correlated strength of correlated noise. In addition, the SNR varies non-monotonically with the increase of the shape parameters of the confined structure, and also with the increase of the constant force along the y axis of the structure. The influence of the correlation rate of the dichotomous noise, and that of the frequency of the periodic force on the SNR are discussed.

关键词: entropic stochastic resonance, dichotomous noise, correlated noise, square-wave signal, signal-to-noise ratio

Abstract: The entropic stochastic resonance (ESR) in a confined system subjected to dichotomous noise and white noise and driven by a periodic sinusoidal force along the x axis of the structure and a time-dependent force in the declining direction, is investigated. Under the adiabatic approximation condition and based on two-state theory, the expression of the output signal-to-noise ratio (SNR) is obtained. The results show that the SNR is a non-monotonic function of the strengths of dichotomous noise, white noise, and correlated strength of correlated noise. In addition, the SNR varies non-monotonically with the increase of the shape parameters of the confined structure, and also with the increase of the constant force along the y axis of the structure. The influence of the correlation rate of the dichotomous noise, and that of the frequency of the periodic force on the SNR are discussed.

Key words: entropic stochastic resonance, dichotomous noise, correlated noise, square-wave signal, signal-to-noise ratio

中图分类号: (Fluctuation phenomena, random processes, noise, and Brownian motion)

05.40.-a

02.50.-r (Probability theory, stochastic processes, and statistics)

郭锋, 程晓锋, 李少甫, 曹文, 黎恒. Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises[J]. 中国物理B, 2012, 21(8): 80502-080502.

Guo Feng (郭锋), Cheng Xiao-Feng (程晓锋), Li Shao-Fu (李少甫), Cao Wen (曹文), Li Heng (黎恒). Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises[J]. Chin. Phys. B, 2012, 21(8): 80502-080502.

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Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises

Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises

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