| João Belfo |
GNC Engineer, DEIMOS Engenharia SA, GNC Competence Center, 1070-061, Lisbon, Portugal. | | Nicola Somma |
GNC Engineer, DEIMOS Engenharia SA, GNC Competence Center, 1070-061, Lisbon, Portugal. | | Alejandro Montero |
GNC Engineer, DEIMOS Space UK, GNC Competence Center, Harwell Oxford Didcot, United Kingdom. | | Paulo Rosa |
Head of the Avionics Business Unit, DEIMOS Engenharia SA, 1070-061, Lisbon, Portugal. | | João Santos |
Instrumentation Engineer, OMNIDEA Lda, 2825-149 Caparica, Portugal. | | Tiago Moreira |
System Engineer, OMNIDEA Lda, 2825-149 Caparica, Portugal. | | Pedro Simplício |
GNC Engineer, Aurora Technology for the European Space Agency, ESTEC, Noordwijk, The Netherlands. | | António Rinalducci |
GNC System Engineer, European Space Agency, ESTEC, Noordwijk, The Netherlands. | | Yohann Torres |
Chemical Propulsion Engineer, European Space Agency, Noordwijk, The Netherlands. |
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| Abstract:
This paper addresses the attitude tracking control problem for an experimental sub-orbital vehicle, with destabilizing fuel sloshing dynamics and limited actuation bandwidth. As part of the control design process, a Linear Time-Invariant (LTI) model, including the rigid-body translational and rotational dynamics, as well as fuel sloshing dynamics, is thoroughly formulated, validated, and then ultimately used for controller synthesis and analysis. A stability analysis is performed confirming the destabilizing sloshing dynamics present in the vehicle considered. To address this problem, a set of filters is included in the structure of the controller, with the associated parameters being tuned by solving a non-smooth optimization problem. Gain and phase margins, as well as Monte-Carlo (MC) results obtained by using a high-fidelity Functional Engineering Simulator (FES), demonstrate that the controller meets the desired levels of performance and robustness.
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View PDF CEAS-GNC-2024-044