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      • Department of Electrical and Electronics Engineering
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      Robust flow control in data-communication networks with multiple time-delays

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      Author
      Ünal, H. U.
      Ataşlar-Ayyildiz, B.
      Iftar, A.
      Özbay, Hitay
      Date
      2009-11-20
      Source Title
      International Journal of Robust and Nonlinear Control
      Print ISSN
      1049-8923
      Publisher
      WILEY
      Volume
      20
      Issue
      13
      Pages
      1529 - 1548
      Language
      English
      Type
      Article
      Item Usage Stats
      124
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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.
      Keywords
      Datacommunication networks
      Flow control
      H ∞-based control
      Multiple time-delays
      Robust control
      Time-delay systems
      Permalink
      http://hdl.handle.net/11693/22218
      Published Version (Please cite this version)
      http://dx.doi.org/10.1002/rnc.1535
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      • Department of Electrical and Electronics Engineering 3524
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