H ∞ control of networked control systems based on event-time-driven model

Abstract

This article considers the H ∞ control problem for a class of networked control systems (NCSs) based on the event-time-driven model, under which the considered NCS can be changed into a class of switched delay systems including an unstable subsystem. The Lyapunov functional exponential estimation method is adopted to solve the problem of H ∞ control for such systems. The switching controller is designed to make the considered system exponentially stable with an H ∞ norm bound in terms of linear matrix inequalities. The obtained results are less conservative than existing ones. Finally, one example is given to illustrate the effectiveness and benefit of the proposed method.