Abstract:Background and Objectives: The paper presents the results of theoretical study of the coherence resonance phenomenon in the modified Vyshkind – Rabinovich model. The model describes the chaotic dynamics of three parametrically interacting modes one of that (a high-frequency mode) is amplified and the other two (the low-frequency modes) are linearly damped. Materials and Methods: To observe the coherence resonance, one of the parameters of the modified Vyshkind – Rabinovich model (the high-frequency mode nonlinear increment) is modulated by noise possessing a uniform spectrum in a bounded frequency band. Results: The calculation results demonstrate an autocorrelation time maximum of the chaotic high-frequency mode envelope that is observed at an optimal level of external noise influence. Conclusion: The proposed method for coherence resonance implementation can be extended to noise-suppressed chaotic systems of another type.
Fulltext:
PDF file (799 kB)