Rate-based flow controllers for communication networks in the presence of uncertain time-varying multiple time-delays


Quet P., Ataslar B. , Iftar A., Ozbay H., Kalyanaraman S., Kang T.

AUTOMATICA, cilt.38, ss.917-928, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 38 Konu: 6
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0005-1098(01)00276-x
  • Dergi Adı: AUTOMATICA
  • Sayfa Sayıları: ss.917-928

Özet

An H-infinity based robust controller is designed for a rate-feedback flow-control problem in single-bottleneck communication networks. The controller guarantees stability robustness to uncertain time-varying multiple time-delays in different channels. It also brings the queue length at the bottleneck node to the desired steady-state value asymptotically and satisfies a weighted fairness condition. Lower bounds for stability margins for uncertainty in the time-delays and for the rate of change of the time-delays are derived. A number of simulations are included to demonstrate the time-domain performance of the controller. Trade offs between robustness and time-domain performance are also discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.