Adaptive optics <i>&#919;</i><sub>2</sub>-optimal control design applied on an experimental setup

Karel Hinnen; Michel Verhaegen; Niek Doelman

doi:10.1117/12.672126

28 June 2006 Adaptive optics Η₂-optimal control design applied on an experimental setup

Karel Hinnen, Michel Verhaegen, Niek Doelman

Proceedings Volume 6272, Advances in Adaptive Optics II; 62722S (2006) https://doi.org/10.1117/12.672126
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

Most adaptive optics systems (AO) are based on a simple control law that is unable to account for the temporal evolution of the wavefront. In this paper, a recently proposed data-driven Η₂-optimal control approach is demonstrated on an AO laboratory setup. The proposed control approach does not assume any form of decoupling and can therefore exploit the spatio-temporal correlation in the wavefront. The performance of the optimal control approach is compared with a conventional method. An analysis of the dominant error sources shows that the optimal control approach leads to a significant reduction in the temporal error. Since the temporal error grows with the Greenwood to sampling frequency ratio, the performance gain is especially large at large ratios.

Citation Download Citation

Karel Hinnen, Michel Verhaegen, and Niek Doelman "Adaptive optics Η₂-optimal control design applied on an experimental setup", Proc. SPIE 6272, Advances in Adaptive Optics II, 62722S (28 June 2006); https://doi.org/10.1117/12.672126

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