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Abstract
We demonstrate a method for tracking the onset of nonlinear oscillations (Hopf bifurcation) in nonlinear dynamical systems. Our method does not require a mathematical model of the dynamical system but instead relies on feedback controllability. This makes the approach potentially applicable in an experiment. The main advantage of our method is that it allows one to vary parameters directly along the stability boundary. In other words, there is no need to observe the transient oscillations of the dynamical system for a long time to determine their decay or growth. Moreover, the procedure automatically tracks the change of the critical frequency along the boundary and is able to continue the Hopf bifurcation curve into parameter regions where other modes are unstable. We illustrate the basic ideas with a numerical realization of the classical autonomous dry friction oscillator.
| Original language | English |
|---|---|
| Publication status | Published - 10 Apr 2006 |
Bibliographical note
Additional information: This is the preprint version of a contribution to the 6th InternationalConference on Modern Practice in Stress and Vibration Analysis, Bath (United
Kingdom), 2006.
Sponsorship: The research of Jan Sieber is supported by EPSRC grant GR/R72020/01.
Keywords
- unstable nonlinear oscillation
- Hopf bifurcation
- continuation
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Dive into the research topics of 'Tracking nonlinear oscillations with time-delayed feedback'. Together they form a unique fingerprint.Research output
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Tracking nonlinear oscillations with time-delayed feedback
Sieber, J. & Krauskopf, B., Apr 2006, 6th International Conference on Modern Practice in Stress and Vibration Analysis 2006.Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)