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arXiv · 1405.7877

Controlling cluster synchronization by adapting the topology

Judith Lehnert·Philipp Hövel·Anton Selivanov·Alexander Fradkov·Eckehard Schöll
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Abstract

We suggest an adaptive control scheme for the control of zero-lag and cluster synchronization in delay-coupled networks. Based on the speed-gradient method, our scheme adapts the topology of a network such that the target state is realized. It is robust towards different initial condition as well as changes in the coupling parameters. The emerging topology is characterized by a delicate interplay of excitatory and inhibitory links leading to the stabilization of the desired cluster state. As a crucial parameter determining this interplay we identify the delay time. Furthermore, we show how to construct networks such that they exhibit not only a given cluster state but also with a given oscillation frequency. We apply our method to coupled Stuart-Landau oscillators, a paradigmatic normal form that naturally arises in an expansion of systems close to a Hopf bifurcation. The successful and robust control of this generic model opens up possible applications in a wide range of systems in physics, chemistry, technology, and life science.

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Judith Lehnert, Philipp Hövel, Anton Selivanov, Alexander Fradkov, Eckehard Schöll. 2014-05-30. Controlling cluster synchronization by adapting the topology. https://doi.org/10.1103/physreve.90.042914

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