Integral terminal sliding-mode integral backstepping adaptive control for trajectory tracking of unmanned surface vehicle

Jiayu Dong, Meijiao Zhao, Min Cheng and Yueying Wang

Cyber-Physical Systems, 2023, vol. 9, issue 1, 77-96

Abstract: The trajectory tracking method for an unmanned surface vehicle (USV) using integral terminal sliding mode integral backstepping adaptive control (ITSMIBAC) scheme is presented in this paper, which takes into account external disturbances and uncertain model parameters. Furthermore, finite-time convergence and excellent track tracking effect are guaranteed by the differential equations that is made up of the integral terminal sliding mode function. In particular, a backstepping method adding integral term is used to ensure the globally asymptotic stability of system and make the differential equations to converge to zero. The upper bound of the disturbances including external disturbances and uncertain model parameters is estimated by an adaptive control law. Finally, the effectiveness and the feasibility of the proposed controller are demonstrated by numerical example and comparison result through tracking circular orbit.

Date: 2023
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DOI: 10.1080/23335777.2021.1924285

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