Robust disturbance attenuation for uncertain nonlinear networked control systems

摘要

This paper considers the problem of robust disturbance attenuation for a class of uncertain nonlinear networked control systems.Takagi-Sugeno fuzzy models are firstly employed to describe the nonlinear plant.Markov processes are used to model the random network-induced delays and data packet dropouts.The Lyapunov-Razumikhin method has been used to derive such a controller for this class of nonlinear systems such that it is stochastically stabilizable with a disturbance attenuation level.Sufficient conditions for the existence of such a controller are derived in terms of the solvability of bilinear matrix inequalities.An iterative algorithm is proposed to change this non-convex problem into quasi-convex optimization problems,which can be solved effectively by available mathematical tools.The effectiveness of the proposed design methodology is verified by a numerical example.