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Predefined‐time guaranteed performance attitude tracking control for uncertain rigid spacecraft
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Predefined‐time guaranteed performance attitude tracking control for uncertain rigid spacecraft
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Journal Article
Predefined‐time guaranteed performance attitude tracking control for uncertain rigid spacecraft
2022
Overview
This paper addresses the predefined‐time guaranteed performance attitude tracking for rigid spacecraft with inertia uncertainties and bounded external disturbances. Firstly, a novel non‐singular predefined‐time terminal sliding mode (NPTSM) surface with the prescribed performance tracking errors is constructed. Secondly, a NPTSM control (NPTSMC) is designed to solve the robust predefined‐time attitude tracking problem. It is proved that the proposed control can ensure that the attitude tracking error satisfies the prescribed performance boundaries all the time and converges to a preset small region centred around the equilibrium point within predefined time and then converges to the equilibrium point asymptotically. The appealing feature of the proposed control is predefined‐time stability with faster transient performance quantified and higher steady‐state accuracy. Simulations verify the effectiveness and improved performance of the proposed approach.
Publisher
John Wiley & Sons, Inc
