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Extended state observer-based composite-system control for trajectory tracking of underactuated AUVs
Highlights A novel control law for trajectory tracking of underactuated AUVs is given, by combining the high gain technique,singular perturbation theory, backstepping technique and composite-system method.
Abstract In this paper, an alternative design method is presented for the horizontal trajectory tracking of underactuated autonomous underwater vehicles (AUVs) subject to unknown internal and external disturbances. In the guidance loop, a kinematic control law of the desired surge speed and trajectory angle is derived. To meet the previous convergence requirement, a kinetic control law is developed. It consists of two terms: the disturbance rejection and the stabilizing controller. The former is given by using an extended state observer (ESO) based on the high gain technique. In this process, the singular perturbation theory is applied to analyze the extended state system via order reduction. Then the latter is designed in the reduced model independently, in term of the backstepping technique and a composite-system method. Moreover, this paper also proves that the proposed controller makes the closed-loop system asymptotically stable. Finally, simulation results are presented to illustrate the control performance.
Extended state observer-based composite-system control for trajectory tracking of underactuated AUVs
Highlights A novel control law for trajectory tracking of underactuated AUVs is given, by combining the high gain technique,singular perturbation theory, backstepping technique and composite-system method.
Abstract In this paper, an alternative design method is presented for the horizontal trajectory tracking of underactuated autonomous underwater vehicles (AUVs) subject to unknown internal and external disturbances. In the guidance loop, a kinematic control law of the desired surge speed and trajectory angle is derived. To meet the previous convergence requirement, a kinetic control law is developed. It consists of two terms: the disturbance rejection and the stabilizing controller. The former is given by using an extended state observer (ESO) based on the high gain technique. In this process, the singular perturbation theory is applied to analyze the extended state system via order reduction. Then the latter is designed in the reduced model independently, in term of the backstepping technique and a composite-system method. Moreover, this paper also proves that the proposed controller makes the closed-loop system asymptotically stable. Finally, simulation results are presented to illustrate the control performance.
Extended state observer-based composite-system control for trajectory tracking of underactuated AUVs
Lei, Ming (author) / Li, Ye (author) / Pang, Shuo (author)
Applied Ocean Research ; 112
2021-04-27
Article (Journal)
Electronic Resource
English
British Library Online Contents | 2006