An improved approach to robust H∞ stabilization for networked control systems

This paper is concerned with the problem of robust H_infin stabilization for networked control systems (NCSs) with both network-induced delay and packet dropout. To obtain a robust H_infin stability criterion with the reduced conservatism, first, this paper presents a useful approach that can non-conservatively represent some time-varying terms encountered in the analysis and synthesis of controllers. Then, based on the obtained stability criterion, this paper proposes an improved H_infin stabilization condition under consideration of norm-bounded uncertainty. A numerical example is exploited to illustrate the effectiveness of the proposed conditions.