Shifted feedback suppression of turbulent behavior in advection-diffusion systems.
Phys Rev Lett
; 102(13): 134501, 2009 Apr 03.
Article
em En
| MEDLINE
| ID: mdl-19392357
ABSTRACT
In spatiotemporal systems with advection, suppression of noise-sustained structures involves questions that are outside of the framework of deterministic dynamical systems control (such as Ott-Grebogi-Yorke-type methods). Here we propose and test an alternate strategy where a nonlocal additive feedback is applied, with the objective to create a new deterministic solution that becomes robust to noise. As a remarkable fact-though the needed parameter perturbations required have essentially a finite size-they turn out to be extraordinarily small in principle 10;{-8} in the free-electron laser experiment presented here.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article