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Experimental study of high frequency stochastic resonance in Chua circuits

AutorGomes, Iacyel; Mirasso, Claudio R. ; Toral, Raúl ; Calvo, Óscar
Palabras claveStochastic resonance
Noise
Forced oscillators
[PACS] Nonlinear dynamics and nonlinear dynamical systems
[PACS] Low-dimensional chaos
Fecha de publicación26-jun-2003
EditorElsevier
CitaciónPhysica A 327(1-2): 115-119 (2003)
ResumenWe study the stochastic resonance phenomenon occurring in electronic Chua circuits operating in the chaotic regime when the forcing signal is modulated at relatively high frequency, of the order of magnitude of the main Chua frequency in the absence of forcing (fo). In all the cases, a clear maximum in the signal-to-noise ratio for an intermediate noise level is observed. When modulating with a frequency smaller than fo we also observe a resonance at a harmonic of the external frequency which is closer to fo or to one of its harmonics. If the modulating frequency is larger than fo we only observe the resonance at the modulating frequency.
Descripción5 pages, 3 figures.-- PACS nrs.: 05.45.−a; 05.40.Ca; 05.45.Ac.-- Issue title: "Proceedings of the XIIIth Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics" (Colonia del Sacramento, Uruguay, Dec 9-13, 2002).
ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0302379
Versión del editorhttp://dx.doi.org/10.1016/S0378-4371(03)00461-8
URIhttp://hdl.handle.net/10261/14854
DOI10.1016/S0378-4371(03)00461-8
ISSN0378-4371
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