Controlling Delay-induced Hopf bifurcation in Internet congestion control system

Details Controlling Delay-induced Hopf bifurcation in Internet congestion control system Controlling Delay-induced Hopf bifurcation in Internet congestion control system

2007-12-21

arxiv.org/abs/0712.3641v1

Computer Science

Networking and Internet Architecture

20 pages, 8 figures

Scientific paper

This paper focuses on Hopf bifurcation control in a dual model of Internet congestion control algorithms which is modeled as a delay differential equation (DDE). By choosing communication delay as a bifurcation parameter, it has been demonstrated that the system loses stability and a Hopf bifurcation occurs when communication delay passes through a critical value. Therefore, a time-delayed feedback control method is applied to the system for delaying the onset of undesirable Hopf bifurcation. Theoretical analysis and numerical simulations confirm that the delayed feedback controller is efficient in controlling Hopf bifurcation in Internet congestion control system. Moreover, the direction of the Hopf bifurcation and the stability of the bifurcating periodic solutions are determinated by applying the center manifold theorem and the normal form theory.

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