Output-feedback MRAC of networked systems with network-induced delays and packet dropout

In this paper, an output-feedback model reference adaptive controller for networked control systems is developed. The problems of networked control systems such as; transmission delays and data-packets dropout induced by the insertion of data networks in the feedback adaptive control loops are considered. The novelty of the paper consists in the combination of different aspects in networked control systems; output-feedback model reference control of systems with unknown parameters, unknown network-induced delays, and unknown data-packets dropout. Sufficient conditions for Lyapunov stability criterion are derived in the case of uncertainty due to delays, and data-packets dropout. Simulation results are given to illustrate the effectiveness of our design approach.