Robust stability for a class of networked control systems based on state observer

Abstract. The problem of robust stability for a class of networked control systems (NCSs) based on state observer is studied in this paper. Considering time-driven sensors, event-driven actuators and the controller, and the uncer-tain time-delay less than and equal to one sampling period, an augmented mathematical model for the NCSs based on state observer is developed. The conditions of the robust stabilization for the NCSs are derived by using linear matrix inequality formulations. Furthermore, the designs for the robust con-trol law and the state observer are presented. A numerical simulation example shows that the analysis method and the results are valid and feasible. Key Words. networked control systems; robust controller design; states ob-server; linear matrix inequality; uncertain time-dela