Output feedback tracking control for switched nonlinear systems with unknown output function

For switched nonlinear systems with unknown parameters, unknown output uncertainties, and external disturbances, we develop an adaptive output feedback controller based on dynamic high-gain technique to track the reference signal under arbitrary switching scheme in this study. To be specific, the developed output feedback controller may ensure the boundedness of all closed-loop system signals by selecting the appropriate common Lyapunov function, while the tracking error converges to an arbitrarily tiny residual set. A numerical example is given to demonstrate the effectiveness of the proposed scheme.