Stochastic Resonance in a Time-Delayed Mono-Stable System with Multiplicative and Additive Noise  

作　　者：郭锋 黄志奇 范勇 李少甫 张宇 

机构地区：[1]School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010 [2]School of Automation Engineering, University of Electronic Science and Technology, Chengdu 610054 [3]School of Computer Science and Technology, Southwest University of Science and Technology, Mianyang 621010 [4]College of Economics and Management, Southwest University of Science and Technology, Mianyang 621010

出　　处：《Chinese Physics Letters》2009年第10期53-56,共4页中国物理快报（英文版）

摘　　要：The stochastic resonance （SR） in a time-delayed mono-stable system driven by multiplicative white noise, additive white noise, additive dichotomous noise as well as a periodic square-wave signal is considered from the view of the signal-to-noise ratio （SNR）. It is found that the SNR increases monotonically with the increase of the delay time. The SNR exhibits the SR behavior when it is plotted as a function of intensities of the noises, displaying the asymmetry of the dichotomous noise. The SNR varies non-monotonically with the increase of the system parameter and the amplitude of the input square-wave signal.The stochastic resonance （SR） in a time-delayed mono-stable system driven by multiplicative white noise, additive white noise, additive dichotomous noise as well as a periodic square-wave signal is considered from the view of the signal-to-noise ratio （SNR）. It is found that the SNR increases monotonically with the increase of the delay time. The SNR exhibits the SR behavior when it is plotted as a function of intensities of the noises, displaying the asymmetry of the dichotomous noise. The SNR varies non-monotonically with the increase of the system parameter and the amplitude of the input square-wave signal.

关 键 词：Computational physics Statistical physics and nonlinear systems 

分 类 号：O223[理学—运筹学与控制论] TU990.3[理学—数学]