Controlling chaos faster

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Christian Bick - , Max Planck Institute for Dynamics and Self-Organization, University of Göttingen, Bernstein Center for Computational Neuroscience Göttingen (Author)
  • Christoph Kolodziejski - , Max Planck Institute for Dynamics and Self-Organization, University of Göttingen (Author)
  • Marc Timme - , Max Planck Institute for Dynamics and Self-Organization, University of Göttingen (Author)

Abstract

Predictive feedback control is an easy-to-implement method to stabilize unknown unstable periodic orbits in chaotic dynamical systems. Predictive feedback control is severely limited because asymptotic convergence speed decreases with stronger instabilities which in turn are typical for larger target periods, rendering it harder to effectively stabilize periodic orbits of large period. Here, we study stalled chaos control, where the application of control is stalled to make use of the chaotic, uncontrolled dynamics, and introduce an adaptation paradigm to overcome this limitation and speed up convergence. This modified control scheme is not only capable of stabilizing more periodic orbits than the original predictive feedback control but also speeds up convergence for typical chaotic maps, as illustrated in both theory and application. The proposed adaptation scheme provides a way to tune parameters online, yielding a broadly applicable, fast chaos control that converges reliably, even for periodic orbits of large period.

Details

Original languageEnglish
Article number033138
JournalChaos
Volume24
Issue number3
Publication statusPublished - 19 Sept 2014
Peer-reviewedYes
Externally publishedYes

External IDs

ORCID /0000-0002-5956-3137/work/142242471