Adaptive Dynamic Surface Control for a Class of Dead-Zone Nonlinear Systems via Output Feedback

The paper aims to address output feedback problem for a class of nonlinear systems subjected unknown dead-zone. High-gain K-filters is firstly designed such that unavailable states system can be reconstructed. Then, with the help dynamic surface control (DSC) method, an adaptive controller design established, which alleviate undesired influence dead-zone and guarantee semi-global stability system. Furthermore, $\mathcal {L_{\infty }}$ performance tracking error achieved by means initialization technique. Ultimately, numerical practical examples clarify efficiency proposed solution.