四川师范大学学报（自然科学版）2012，Vol.35Issue(6)：821-825,5.DOI:10.3969/j.issn.1001-8395.2012.06.021
延迟和色噪声对方波信号驱动双稳系统的影响
Effect of Time-delay and Colored Noise on a Bistable System Driven by Square-wave Signal
摘要
Abstract
The effect of time-delay and noise color on a bistable system subjected to constant force, dichotomous noise and square-wave signal is investigated. Under the adiabatic limit condition, by using the small delay-time approximation, the expression of the signal-to-noise ratio( SNR) of the system is obtained. It is found that the SNR varies non-monotonously with the delayed-time and the correlation of the colored noise. Moreover, the SNR curves present stochastic resonance phenomenon as a function of the intensity of dichotomous noise, the colored noise, the constant force and the amplitude of square-wave. The influence of the system parameters on the SNR is also studied.关键词
随机共振/时间延迟/色噪声/信噪比Key words
stochastic resonance/ time-delay/ colored noise/ signal-to-noise ratio分类
数理科学引用本文复制引用
李凤保,雷晓燕,朱福成,郭锋..延迟和色噪声对方波信号驱动双稳系统的影响[J].四川师范大学学报（自然科学版）,2012,35(6):821-825,5.基金项目
四川省教育厅自然科学重点基金(11ZA003)资助项目 （11ZA003）
