title: Robust control of a bimorph mirror for adaptive optics systems.
abstract: We apply robust control techniques to an adaptive optics system including a dynamic model of the deformable mirror. The dynamic model of the mirror is a modification of the usual plate equation. We propose also a state-space approach to model the turbulent phase. A continuous time control of our model is suggested, taking into account the frequential behavior of the turbulent phase. An H(infinity) controller is designed in an infinite-dimensional setting. Because of the multivariable nature of the control problem involved in adaptive optics systems, a significant improvement is obtained with respect to traditional single input-single output methods.
authors.affiliation: LAAS-CNRS, Université de Toulouse, 7 Avenue du Colonel Roche, 31077 Toulouse Cedex 4, France. baudouin@laas.fr
authors.forename: Lucie
authors.initials: L
authors.lastname: Baudouin
authors.forename: Christophe
authors.initials: C
authors.lastname: Prieur
authors.forename: Fabien
authors.initials: F
authors.lastname: Guignard
authors.forename: Denis
authors.initials: D
authors.lastname: Arzelier