Abstract
In this paper, we consider the phenomenon of stochastic resonance (SR) in an asymmetric bistable system with coloured noises and periodic rectangular signal. Expression of the signal-to-noise ratio (SNR) has been obtained under the adiabatic limit. We investigate the effect of any system parameter (such as p, q, r, τ 1, τ 2) on the SNR. The plot of SNR– τ 1 shows SR for some values of the additive noise self-correlation time τ 2, but not for the whole range of τ 2. The system bias r suppresses the SNR. When the intensity of additive noise q is increased, the SR phenomenon disappears in the plot of SNR– p, but the plot of SNR– q presents SR for almost all values of the multiplicative noise intensity p.
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