Robust Sampled-Data Control of Uncertain Switched Neutral Systems with Probabilistic Input Delay

This article focuses on the robust sampled-data control for a class of uncertain switched neutral systems based on the average dwell-time approach. In particular, the system is considered with probabilistic input delay using sampled state vectors, which are described by the stochastic variables with a Bernoulli distributed white sequence and time-varying norm-bounded uncertainties. By constructing a novel Lyapunov-Krasovskii functional which involves the lower and upper bounds of the delay, a new set of sufficient conditions are derived in terms of linear matrix inequalities for ensuring the robust exponential stability of the uncertain switched neutral system about its equilibrium point. Moreover, based on the stability criteria, a state feedback sampled-data control law is designed for the considered system. Finally, a numerical example based on the water-quality dynamic model for the Nile River is given to illustrate the effectiveness of the proposed design technique. (C) 2015 Wiley Periodicals, Inc.