Sliding Plane Design for Congestion Control in Multi-Source Connection-Oriented Data Transmission Networks

In this paper the problem of congestion control in connection-oriented data transmission networks is addressed from a control-theoretic perspective, and new sliding-mode controllers are designed. The main emphasis is placed on the selection of the switching function, which is shown to have a decisive impact on the performance of the considered system with delay. For the first controller the parameters of the switching function are obtained by minimizing a quadratic cost functional, while for the second one, the concept of reaching law is employed. The nonlinear controller based on the reaching law shows improved dynamical performance and smaller cost index with respect to the first, optimal one.