Magnetorquers-based satellite attitude control using interval type-II fuzzy terminal sliding mode control with time delay estimation

This paper presents a novel robust attitude controller for satellite applications with magnetic actuation. First, at the kinematical level, a terminal sliding mode (TSM)-based sliding surface is proposed to achieve attitude tracking. Next, at the dynamical level, a controller is designed for robust stabilization of the sliding surface. Time delay estimation (TDE) is used to estimate the uncertainty caused by parametric uncertainty and external disturbances in the satellite dynamics. The TDE output is then combined with an interval type-2 fuzzy logic (IT2FL)-based robust TSM controller. The main merits of this control strategy are fast convergence of the tracking errors and strong robustness against disturbances/parametric uncertainty. The closed-loop stability and convergence of the tracking errors are proved by Lyapunov analysis. Software simulations confirm the effectiveness of the proposed control method. (C)& nbsp;2022 COSPAR. Published by Elsevier B.V. All rights reserved.

Automated summary

This paper presents a novel robust attitude controller for satellite applications with magnetic actuation. At the kinematical level, a terminal sliding mode (TSM)-based sliding surface is proposed for attitude tracking. At the dynamical level, a controller is designed for robust stabilization of the sliding surface. Time delay estimation (TDE) is used to estimate the uncertainty caused by parametric uncertainty and external disturbances. The TDE output is combined with an interval type-2 fuzzy logic (IT2FL)-based robust TSM controller. The control strategy shows fast convergence of tracking errors and strong robustness against disturbances/parametric uncertainty.