摘要
By the method of the stochastic energetics,we investigate the stochastic resonance (SR) phenomenon of anoverdamped Brown particle in an asymmetric bistable potential,driven by external periodical signal and multiplicativenoise.The expressions have been obtained for the quasi-steady-state probability distribution function.It is found thatthe input energy (IE) pumped into the system by the external driving shows an SR-like behavior as a function of thenoise strength,whereas the IE turns to be a monotonic function of the correlation time of the noise.The effect ofpotential asymmetry is also studied on SR and IE.
By the method of the stochastic energetics,we investigate the stochastic resonance (SR) phenomenon of an overdamped Brown particle in an asymmetric bistable potential,driven by external periodical signal and multiplicative noise.The expressions have been obtained for the quasi-steady-state probability distribution function.It is found that the input energy (IE) pumped into the system by the external driving shows an SR-like behavior as a function of the noise strength,whereas the IE turns to be a monotonic function of the correlation time of the noise.The effect of potential asymmetry is also studied on SR and IE.
作者
ZHOU Yu-Rong~(1,2)GUO Feng~3 and PANG Xiao-Feng~1~1 School of Life Science and Technology,University of Electronic Science and Technology of China,Chengdu 610054,China~2 School of Information and Electric Engineering,Panzhihua University,Panzhihua 617000,China~3 School of Automation Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China
基金
The project supported by Doctor Foundation of Panzhihua University under Grant No.B2006-1
