Robust disturbance attenuation for uncertain networked control systems

This paper investigates the problem of robust stabilization and disturbance attenuation for a class of uncertain networked control systems (NCSs) with random communication network-induced delays. Based on the Lyapunov-Razumikhin method, a controller is designed such that both robust stability and a prescribed disturbance attenuation performance for the closed-loop NCS are achieved, irrespective of system uncertainties and network-induced delays. The controller design technique is given 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.