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

• GENERAL • 上一篇    下一篇

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   

  1. 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   

  1. 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: 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)