Journal
ISA TRANSACTIONS
Volume 89, Issue -, Pages 131-138Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2018.12.021
Keywords
TCP/AQM network; H-infinity; Tracking control; Integral backstepping; Uncertainty
Categories
Funding
- China Scholarship Council [201606080044]
- NSERC (in Canada)
- National Natural Science Funds of China [61773108, 61503222]
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An H-infinity congestion tracking control problem for nonlinear transmission control protocol/active queue management (TCP/AQM) network is proposed in this paper. Inspired by the existing network models, a modified TCP/AQM network model with external disturbance and modelling uncertainty is first introduced. And then, a novel function for the desired queue length is defined for the first time, which can simulate the changes in the queue length during a day. Next, a novel AQM scheme is presented to control network congestion by combining H-infinity theory and integral backstepping technique. The proposed method guarantees that the better tracking performance of the queue is achieved, and all the signals are asymptotically stable in the closed-loop system in probability. Finally, the effectiveness of the presented algorithm is tested by simulation results. (C) 2019 ISA. Published by Elsevier Ltd. All rights reserved.
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