Stochastic resonance in a time-delayed bistable system subject to multiplicative and additive noise  

作　　者：郭锋 周玉荣 张宇 

机构地区：[1]School of Information Engineering,Southwest University of Science and Technology [2]School of Information and Electric Engineering,Panzhihua University [3]College of Economics and Management,Southwest University of Science and Technology

出　　处：《Chinese Physics B》2010年第7期86-90,共5页中国物理B（英文版）

基　　金：supported by the Doctor Foundation of Southwest University of Science and Technology of China (Grant No. 08zx7108)

摘　　要：This paper investigates the stochastic resonance in a time-delayed bistable system subjected to multiplicative and additive white noise and asymmetric dichotomous noise. Under the adiabatic approximation condition, the expression of the signal-to-noise ratio （SNR） is obtained. It finds that the SNR is a non-monotonic function of the delayed times, of the amplitude of the driving square-wave signal, as well as of the asymmetry of the dichotomous noise. In addition, the SNR varies non-monotonously with the intensities of the multiplicative and additive noise as well as the system parameters. Moreover, the SNR depends non-monotonically on the correlate rate of the dichotomous noise.This paper investigates the stochastic resonance in a time-delayed bistable system subjected to multiplicative and additive white noise and asymmetric dichotomous noise. Under the adiabatic approximation condition, the expression of the signal-to-noise ratio （SNR） is obtained. It finds that the SNR is a non-monotonic function of the delayed times, of the amplitude of the driving square-wave signal, as well as of the asymmetry of the dichotomous noise. In addition, the SNR varies non-monotonously with the intensities of the multiplicative and additive noise as well as the system parameters. Moreover, the SNR depends non-monotonically on the correlate rate of the dichotomous noise.

关 键 词：stochastic resonance time-delayed bistable system signal-to-noise ratio 

分 类 号：N93[自然科学总论]