Dynamic output feedback for nonlinear networked control system with state delay

Focusing on networked control systems with state delay, a state feedback controller for a class of nonlinear networked control systems with state delay is presented. Then an observer is designed to estimate the system state. Finally, we achieve stabilization of this class of systems through an output feedback without augmentation of the state space model. From an appropriate Lyapunov-Krasovskii function, sufficient conditions which guarantee the convergence of the state variables and state estimation errors to the origin are deduced and expressed in terms of simple LMIs. Usability and simplicity are the advantages of this method. We confirm these advantages through a numerical example.