Comptes Rendus
no. 10
MCAO for very large telescopes/OAMC pour les très grands télescopes
Optimal control for Multi-Conjugate Adaptive Optics
[Contrôle optimal pour l'optique adaptative multi-conjuguée]
Cyril Petit1 ; Jean-Marc Conan1  ; Caroline Kulcsár2 ; Henri-François Raynaud2 ; Thierry Fusco1 ; Joseph Montri1 ; Didier Rabaud3
1 Office national d'études et de recherches aérospatiales, BP 72, 92322 Châtillon cedex, France
2 Université Paris 13, institut Galilée, L2TI, 93430 Villetaneuse, France
3 Shaktiware, 27, boulevard C. Moretti, 13014 Marseille, France
Comptes Rendus. Physique, Volume 6 (2005) no. 10, pp. 1059-1069.

L'Optique Adaptative (OA) classique est aujourd'hui une technique éprouvée permettant une correction temps réel en boucle fermée des effets de la turbulence. Généralement, elle se base sur des lois de commande simples et efficaces. Cependant, les futures générations d'OA (Optique Adaptative Multi-conjuguée (OAMC) dans ces diverses formes et l'OA Extreme), nécessiteront des lois de contrôle plus sophistiquées en particulier dans le cas de l'OA grand champ. Nous présentons dans cet article une solution de contrôle optimal pour l'OA en général, et mettons en évidence ses atouts comparativement aux approches standard. Une première validation expérimentale de cette approche est présentée.

Classic adaptive optics (AO) is now a proven technique that provides a closed loop real time correction of the turbulence. It is generally based on simple and efficient control algorithms. The next AO generation (Multi-Conjugate AO (MCAO) in its various forms and Extreme AO (XAO)) will require more sophisticated control approaches, especially in the case of wide field AO. We present here the concepts behind optimal control. The advantages compared to more standard approaches are stressed. A first experimental validation is presented.

Publié le :
DOI : 10.1016/j.crhy.2005.10.013
Keywords: Adaptive optics, Kalman filter, Control theory
Mot clés : Optique adaptative, Filtre de Kalman, Automatique
Cyril Petit 1 ; Jean-Marc Conan 1 ; Caroline Kulcsár 2 ; Henri-François Raynaud 2 ; Thierry Fusco 1 ; Joseph Montri 1 ; Didier Rabaud 3

1 Office national d'études et de recherches aérospatiales, BP 72, 92322 Châtillon cedex, France
2 Université Paris 13, institut Galilée, L2TI, 93430 Villetaneuse, France
3 Shaktiware, 27, boulevard C. Moretti, 13014 Marseille, France 
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Cyril Petit; Jean-Marc Conan; Caroline Kulcsár; Henri-François Raynaud; Thierry Fusco; Joseph Montri; Didier Rabaud. Optimal control for Multi-Conjugate Adaptive Optics. Comptes Rendus. Physique, Volume 6 (2005) no. 10, pp. 1059-1069. doi : 10.1016/j.crhy.2005.10.013. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2005.10.013/

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