ℌ∞ tracking control design for networked output-feedback control systems

This paper tackles the observer-based ℌ_∞ tracking problem of networked output-feedback control systems (T-NOCSs) with consideration of data transmission delays, data-packet dropouts, and sampling effects. Based on the reciprocally convex representation method, a compatible synthesis condition for T-NOCSs is systematically derived from the Lyapunov-Krasovskii functional approach. Moreover, the single step procedure is proposed to overcome the drawback of the two-step LMI approach of handling inherited non-convex terms that appear when deriving the synthesis condition. Finally, two numerical examples are given to illustrate the effectiveness of our result.