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Article Dans Une Revue Optics Express Année : 2006

Optimal control, observers and integrators in adaptive optics

Résumé

The fundamental issue of residual phase variance minimization in adaptive optics (AO) loops is addressed here from a control engineering perspective. This problem, when suitably modeled using a state-space approach, can be broken down into an optimal deterministic control problem and an optimal estimation problem, the solution of which are a linear quadratic (LQ) control and a Kalman filter. This approach provides a convenient framework for analyzing existing AO controllers, which are shown to contain an implicit phase turbulent model. In particular, standard integrator-based AO controllers assume a constant turbulent phase, which renders them prone to the notorious wind-up effect.
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hal-04511034 , version 1 (19-03-2024)

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  • HAL Id : hal-04511034 , version 1

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Caroline Kulcsár, Henri-François Raynaud, Cyril Petit, Jean-Marc Conan, Patrick Viaris de Lesegno. Optimal control, observers and integrators in adaptive optics. Optics Express, 2006, 14 (17), pp.7464-7476. ⟨hal-04511034⟩
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