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Robust Active Mirror Control Based on Hybrid Sensing for Spacecraft Line-of-Sight Stabilization

Sanfedino, Francesco and Preda, Valentin and Pommier-Budinger, Valérie and Alazard, Daniel and Boquet, Fabrice and Bennani, Samir Robust Active Mirror Control Based on Hybrid Sensing for Spacecraft Line-of-Sight Stabilization. (2021) IEEE Transactions on Control Systems Technology, 29 (1). 220-235. ISSN 1063-6536

(Document in English)

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Official URL: https://doi.org/10.1109/TCST.2020.2970658


Modern space-observation missions demand stringent pointing requirements that motivated a significant amount of research on the topic of microvibration isolation and line-of-sight stabilization systems. While disturbances can be reduced by mounting some of the noisy equipment on various isolation platforms, residual vibrations can still propagate through and be amplified by the flexible structure of the spacecraft. In order to alleviate these issues, the line of sight must also be actively controlled at the payload level. However, such systems typically have to rely solely on low-frequency sensors based on image processing algorithms. The goal of this article is to present a model-based control methodology that can increase the bandwidth of such systems by making use of additional rate sensors mounted on the main disturbance elements impacting the optical path. Following a comprehensive model identification and uncertainty quantification part, the robust control strategy is designed to account for plant uncertainty and provide formal worst case performance guarantees. Excellent agreement between theoretical prediction and experimental results are obtained on a test bench developed at the European Space Agency.

Item Type:Article
HAL Id:hal-02908183
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > ESA - ESTEC (NETHERLANDS)
Laboratory name:
Deposited On:28 Jul 2020 12:52

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