Minimax Controller Design Based On Backstepping Sliding Mode For Tcp Network Systems

This paper proposes an active queue management (AQM) controller based on Backstepping Sliding Mode control for a class of nonlinear TCP network congestion systems in the presence of uncertain parameters and unknown external disturbances. At the same time, based on the idea of the Minimax method in game theory, a novel output feedback controller is specially designed. Considering the situation that the system got the max impact when being disturbed by Lyapunov stability theory, the controller is optimally designed to deal with the system under the worst condition. The simulation results show that the proposed control strategy is effective to improve the transient stability and robustness of the system.