Robust H∞ performance analysis for continuous-time networked control systems

This paper studies the problems of robust H _infin performance analysis and controller design for continuous-time networked control systems (NCSs). A new type of Lyapunov functionals is exploited to derive sufficient conditions for guaranteeing the robust exponential stability and H _infin performance of the considered system, and robust H _infin controller design is presented. It is shown that the newly obtained result is less conservative than the existing corresponding ones. Meanwhile, by using a method of eliminating redundant variables, the computation complexity is reduced. Numerical examples are given to illustrate the effectiveness of the proposed methods.