Robust controller design for ATM network with time - varying multiple time - delays

Abstract

For the congestion of the Asynchronous Transfer Mode (ATM) networks with time-varying multiple time-delays and changeful available bit-rate (ABR) bandwidth, an ABR flow controller is designed and the LMI-based delay-dependent stabilizability. criteria is proposed. The algorithm, which is independent of the derivative of varying delays, is less conservative and can be implemented easily. It also achieves two expectant goals, i.e. it satisfies a weighted fairness condition and ensures convergence of queue length to the desired steady-state value. Simulation results show that the control system is robust and rapid and the quality of service (QoS) is guaranteed.