Low-Dimensional Description of Pulses under the Action of Global Feedback Control

Y. Kanevsky¹ ; A. A. Nepomnyashchy¹

¹ Department of Mathematics, Technion – Israel Institute of Technology Haifa, 32000, Israel

Mathematical modelling of natural phenomena, Tome 7 (2012) no. 2, pp. 83-94.

Résumé

The influence of a global delayed feedback control which acts on a system governed by a subcritical complex Ginzburg-Landau equation is considered. The method based on a variational principle is applied for the derivation of low-dimensional evolution models. In the framework of those models, one-pulse and two-pulse solutions are found, and their linear stability analysis is carried out. The application of the finite-dimensional model allows to reveal the existence of chaotic oscillatory regimes and regimes with double-period and quadruple-period oscillations. The diagram of regimes resembles those found in the damped-driven nonlinear Schrödinger equation. The obtained results are compared with the results of direct numerical simulations of the original problem.

Détail

DOI : 10.1051/mmnp/20127208

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