Decentralized H∞ robust stability for switched uncertain nonlinear time-delay composite systems

The paper mainly studies the problem of H_infin robust stability for a new type of uncertain nonlinear time-delay composite systems. Switched uncertain nonlinear time-delay composite systems. Based on single Lyapunov function and multiple Lyapunov function, respectively, two design schemes of decentralized switching laws are obtained, under which the systems are shown to be asymptotically stable with H_infin-norm bound. As a direct application, the problem of H_infin robust stabilization for general composite systems is studied by utilizing decentralized hybrid state feedback control strategy. All the results presented in this paper can be taken as an extension of some existing results for both switched and non-switched composite systems.