Robust flow control in data-communication networks with multiple time-delays

Date
2009-11-20
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Source Title
International Journal of Robust and Nonlinear Control
Print ISSN
1049-8923
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Publisher
WILEY
Volume
20
Issue
13
Pages
1529 - 1548
Language
English
Type
Article
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Abstract

Robust controller design for a flow control problem where uncertain multiple time-varying time-delays exist is considered. Although primarily data-communication networks are considered, the presented approach can also be applied to other flow control problems and can even be extended to other control problems where uncertain multiple time-varying time-delays exist. Besides robustness, tracking and fairness requirements are also considered. To solve this problem, an H∞ optimization problem is set up and solved. Unlike previous approaches, where only a suboptimal solution could be found, the present approach allows to design an optimal controller. Simulation studies are carried out in order to illustrate the time-domain performance of the designed controllers. The obtained results are also compared to the results of a suboptimal controller obtained by an earlier approach.

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Keywords
Datacommunication networks, Flow control, H ∞-based control, Multiple time-delays, Robust control, Time-delay systems
Citation
Published Version (Please cite this version)