Design of Congestion Control Scheme for Uncertain Discrete Network Systems
Keywords:
sliding mode control, network systems, linear matrix inequality(LMI)Abstract
For a class of uncertain discrete network systems, a sliding mode control algorithm is presented for active queue management (AQM) in order to solve the problem of congestion control in transmission control protocol (TCP) communication. First, the sliding surface is designed based on linear matrix inequality (LMI) technique. Then, we analyze the mechanism of chattering for the discrete-time exponential approximation law, a modified one is presented and applied to the network systems. Simulation results demonstrate that the proposed controller has good stability and robustness with respect to the uncertainties of the number of active TCP
sessions, link capacity and the round-trip time.
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