Persistent disturbance attenuation properties for networked control systems

Abstract

In this paper, both the asymptotic stability and l/sup /spl infin// persistent disturbance attenuation issues are investigated for a class of networked control systems (NCSs) under bounded uncertain access delay and packet dropout effects. The basic idea is to formulate such NCSs as discrete-time switched systems with arbitrary switchings. Then the NCSs' stability and performance problems can be reduced to the corresponding problems of such switched systems. The asymptotic stability problem is considered first, and a necessary and sufficient condition is derived for the NCSs' asymptotic stability based on robust stability techniques. Secondly, the NCSs' l/sup /spl infin// persistent disturbance attenuation properties are studied, and an algorithm is proposed to calculate the l/sup /spl infin// induced gain of the NCSs. The decidability issue of the algorithm is also discussed.