International Journal of Bifurcation and Chaos · 1992 · 76 citations · 0 references
EngineeringElectrical EngineeringPhysicsCircuit TheoryDynamical SystemsStochastic ProcessesBifurcation TheoryChaos TheoryNoise In Electronic DevicesNonlinear DynamicsResonance In CircuitsStochastic Differential EquationsChaos In CircuitsChaotic OscillatorsElectronic NoiseNoise AnalysisNoise-induced PhenomenaResonanceResonance FrequenciesStochastic Resonance
In this paper, we report numerical observations of the stochastic resonance (SR) phenomenon in a bistable chaotic electronic circuit (namely, Chua’s circuit) driven simultaneously by noise and a sinusoidal signal. It is shown that the noise-induced “chaos-chaos” type intermittency is a physical mechanism of the SR-phenomenon in chaotic systems. The resulting amplification of the sinusoidal signal intensity is due to a coherent interaction of three characteristic frequencies of the system. The SR-phenomenon can be controlled by a variation of either the noise intensity or the system parameters in the absence of noise.