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Related Experiment Videos

Internal stochastic resonance in two coupled liquid membrane oscillators.

Qian Shu Li1, Ya Ping Li

  • 1School of Science, Beijing Institute of Technology, Beijing 100081, China. qsli@bit.edu.cn

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|April 20, 2004
PubMed
Summary

Internal stochastic resonance (ISR) in coupled oscillators is explored. Results show ISR enhancement or suppression depends on coupling strength, with synchronization at high coupling, and ISR occurring without tuning.

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Area of Science:

  • Nonlinear Dynamics
  • Complex Systems
  • Statistical Physics

Background:

  • Stochastic resonance is a phenomenon where noise enhances signal detection.
  • Internal stochastic resonance (ISR) occurs in systems with intrinsic noise sources.
  • Coupled oscillators exhibit complex behaviors influenced by interactions and noise.

Purpose of the Study:

  • To investigate internal stochastic resonance (ISR) in two coupled liquid membrane oscillators.
  • To analyze the influence of coupling strength on ISR in a system with one noisy oscillator.
  • To explore conditions for ISR occurrence and oscillator synchronization.

Main Methods:

  • Numerical simulations of two coupled nonlinear oscillators.
  • Analysis of system response under varying coupling strengths.

Related Experiment Videos

  • Comparison of oscillator dynamics when only one is subjected to noise.

    • Main Results:

    • ISR enhancement or suppression in each oscillator is dependent on coupling strength.
    • Synchronization of the two oscillators is observed exclusively at strong coupling strengths.
    • Internal stochastic resonance can occur without parameter tuning under specific conditions.

    Conclusions:

    • Coupling strength is a critical parameter modulating ISR in coupled systems.
    • Synchronization and ISR are distinct phenomena influenced by system parameters.
    • The study provides insights into noise-induced phenomena in coupled nonlinear systems.