Adaptive optics H2-optimal control design applied on an experimental setup

Conference paper (2006)
Department
Delft Centre for Systems and Control (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: ©2006 Hinnen, K., Verhaegen, K., Doelman, N.
Adaptive optics Data-driven disturbance modeling H2-optimal control Spatioal-temporal correlation
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Published Date

31-07-2006

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Source:

Proceedings of SPIE, 2006 vol. 6272

ISSN:

0277-786X

Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Centre for Systems and Control

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 H2-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.

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