4.6 Article

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

期刊

IEEE ACCESS
卷 9, 期 -, 页码 109335-109343

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2021.3101483

关键词

Dynamic surface control; adaptive control; high-gain observer; dead-zone; nonlinear systems

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

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