CEAS EuroGNC 2024
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Linear Parameter-Varying gain-scheduled attitude controller for a spinning spacecraft involving large flexible booms
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| Ricardo Rodrigues |
Ph.D. student, Fédération de recherche ONERA - ENAC - ISAE SUPAERO, Université de Toulouse, 31055, Toulouse, France. | | Francesco Sanfedino |
Associate Professor, Fédération de recherche ONERA - ENAC - ISAE SUPAERO, Université de Toulouse, 31055, Toulouse, France. | | Daniel Alazard |
Professor, Fédération de recherche ONERA - ENAC - ISAE SUPAERO, Université de Toulouse, 31055, Toulouse, France. |
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| Abstract:
In this paper, a comprehensive methodology is presented for modeling a spinning flexible spacecraft mission scenario and designing a gain-scheduled feedback control system that can robustly meet performance requirements and adapt to the angular velocity of the spacecraft. This spacecraft is composed of a main central body, two flexible booms and two tip masses. The model of the satellite was designed to be compliant with the Two-Input-Two-Output Port (TITOP) approach, which offers the possibility to model complex multibody mechanical systems, while keeping the uncertain nature of the plant and condensing all the possible mechanical configurations in a single linear fractional representation (LFR). Furthermore, the model fully captures the impact of centrifugal stiffening and softening on the dynamics of the satellite's flexible rotating booms, as well as its dependence on the angular velocity. Ultimately, the control design considers the interactions between subsystems and uncertainties, as well as the time-varying and coupled flexible dynamics.
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| Keywords: Robust H-infinity Control; Flexible Structures; LFT Modeling; Spinning Satellites; Multibody Dynamics |
 View PDF CEAS-GNC-2024-008 |
| Ricardo Rodrigues, Francesco Sanfedino, Daniel Alazard: Linear Parameter-Varying gain-scheduled attitude controller for a spinning spacecraft involving large flexible booms. Proceedings of the 2024 CEAS EuroGNC conference. Bristol, UK. June 2024. CEAS-GNC-2024-008.
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| BibTeX entry:
@Incollection{CEAS-GNC-2024-008,
author = {Rodrigues, Ricardo and Sanfedino, Francesco and Alazard, Daniel},
title = {Linear Parameter-Varying gain-scheduled attitude controller for a spinning spacecraft involving large flexible booms},
booktitle = {Proceedings of the 2024 {CEAS EuroGNC} conference},
address = {Bristol, UK},
month = jun,
year = {2024},
note = {CEAS-GNC-2024-008}
}
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