A New Method for H_∞ Performance Analysis and Control of Networked Control Systems

摘要

In this paper the problems of H_∞ performance analysis and control of networked control systems with time vary-ing sampling intervals and delays are studied. A new impulsive system based method is introduced to deal with this problem. Moreover, a new Lyapunov-Krasovskii functional is proposed to establish sufficient conditions for exponential stability and H_∞control of networked control systems. The distinctive feature of the new Lyapunov-Krasovskii functional is that it has a negative derivative on update intervals and is non-increasing at input update instants, which leads to less conservatism of the proposed conditions. The theoretical predictions are verified by an illustrative example.