Delay-dependent H∞ filtering for complex dynamical networks with time-varying delays in nonlinear function and network couplings

This paper investigates the H-infinity filtering problem for a class of continuous-time complex dynamical networks with time-varying delays in nonlinear function and network couplings. The aim of the addressed problem is to design a H-infinity filter against the exogenous disturbances, such that the filtering error system of complex dynamical networks is asymptotically stable and guarantees the desired H-infinity performance attenuation level. Based on the Lyapunov stability theory, suitable Lyapunov-Krasovskii functional is constructed in terms of Kronecker product, furthermore, new delay-dependent sufficient stability conditions are derived in terms of linear matrix inequalities by using reciprocal convex combination approach to obtain less conservative results. Finally, numerical examples are exploited to demonstrate the effectiveness of the proposed theoretical results. (C) 2015 Elsevier B.V. All rights reserved.