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28 July 2010 Classical adaptive optics: disturbance rejection control
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This paper addresses the residual wavefront variance minimization by means of a linear quadratic gaussian control methodology. The proposed approach emphasizes the ability of the adaptive optics loop to reject the atmospheric aberration. We derive a diagonal state space system which clearly separates the dynamics of the plant (deformable mirror & wavefront sensor) from the disturbance dynamics (atmospheric model). This representation facilitates the numerical resolution of the problem. A frequency analysis is carried out to check performance and robustness specifications of the multiple-input multiple-output feedback system. The effectiveness of the approach is demonstrated through numerical experiments using wavefronts generated with the Software Package CAOS.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-Pierre Folcher, Andrea Abelli, André Ferrari, and Marcel Carbillet "Classical adaptive optics: disturbance rejection control", Proc. SPIE 7736, Adaptive Optics Systems II, 77364F (28 July 2010);

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