Search Results for author: Valentin Preda

Found 6 papers, 1 papers with code

Modeling, robust control synthesis and worst-case analysis for an on-orbit servicing mission with large flexible spacecraft

no code implementations16 Jun 2022 Ricardo Rodrigues, Valentin Preda, Francesco Sanfedino, Daniel Alazard

This paper outlines a complete methodology for modeling an on-orbit servicing mission scenario and designing a feedback control system for the attitude dynamics that is guaranteed to robustly meet pointing requirements, despite model uncertainties as well as large inertia and flexibility changes throughout the mission scenario.

LPV Modeling of the Atmospheric Flight Dynamics of a Generic Parafoil Return Vehicle

no code implementations19 May 2022 Matthis H. de Lange, Chris Verhoek, Valentin Preda, Roland Tóth

Obtaining models that can be used for control is of utmost importance to ensure the guidance and navigation of spacecraft, like a Generic Parafoil Return Vehicle (GPRV).

Optimal Science-time Reorientation Policy for the Comet Interceptor Flyby via Sequential Convex Programming

no code implementations19 May 2021 Valentin Preda, Andrew Hyslop, Samir Bennani

This paper introduces an algorithm to perform optimal reorientation of a spacecraft during a high speed flyby mission that maximizes the time a certain target is kept within the field of view of scientific instruments.

Integrated modelling of microvibrations induced by Solar Array Drive Mechanism for worst-case end-to-end analysis and robust disturbance estimation

no code implementations7 May 2021 Francesco Sanfedino, Daniel Alazard, Valentin Preda, Davide Oddenino

A Linear Parameter-Varying observer, scheduled by the solar array rotor angle, is finally proposed in order to estimate the disturbance torques induced by the gearbox imperfections just using the measurements coming from a classical attitude control system: a star tracker and a gyrometer.

Autonomous parafoil precision landing using convex real-time optimized guidance and control

1 code implementation3 May 2021 Antoine Leeman, Valentin Preda, Irene Huertas, Samir Bennani

To overcome the limitations of current parafoil precision landing capabilities, an efficient real-time convex optimized guidance and control strategy is presented.

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