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Open Access item Coherence Resonance in Chaotic Systems
Mirasso, Claudio R.
Gunton, James D.
|Keywords:||Noise, Low-dimensional chaos|
|Citation:||Europhysics Letters 56: 347 (2001)|
|Abstract:||We show that it is possible for chaotic systems to display the main features
of coherence resonance. In particular, we show that a Chua model, operating in a chaotic
regime and in the presence of noise, can exhibit oscillations whose regularity is optimal for
some intermediate value of the noise intensity. We find that the power spectrum of the signal
develops a peak at finite frequency at intermediate values of the noise. These are all signatures
of coherence resonance. We also experimentally study a Chua circuit and corroborate the above
simulation results. Finally, we analyze a simple model composed of two separate limit cycles
which still exhibits coherence resonance, and show that its behavior is qualitatively similar to
that of the chaotic Chua system.|
|Description:||PACS. 05.40.Ca – Noise.
PACS. 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems.
PACS. 05.45.Ac – Low-dimensional chaos.|
|Publisher version (URL):||http://dx.doi.org/10.1209/epl/i2001-00526-5|
|E-ISSNmetadata.dc.identifier.doi = DOI:||1286-4854|
|Appears in Collections:||(IMEDEA) Artículos|
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