| Issue |
Europhys. Lett.
Volume 56, Number 3, November 2001
|
|
|---|---|---|
| Page(s) | 347 - 353 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2001-00526-5 | |
| Published online | 01 December 2003 | |
Coherence resonance in chaotic systems
1
Departament de Física, Universitat de les Illes Balears
E-07071 Palma de Mallorca, Spain
2
Instituto Mediterráneo de Estudios Avanzados (IMEDEA),
CSIC-UIB E-07071 Palma de Mallorca, Spain
Received:
19
March
2001
Accepted:
4
August
2001
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.
PACS: 05.40.Ca – Noise / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems / 05.45.Ac – Low-dimensional chaos
© EDP Sciences, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.