Robust Control of a Deformable Mirror for Adaptive Optics Systems

DOI

10.2991/caai-17.2017.9How to use a DOI?

Keywords

H synthesis; adaptive optics; atmospheric correction

Abstract

To improve the robust stability of adaptive optics system, H synthesis has been introduced to design the controller. H synthesis has advantages to deal with unmodelled dynamic of plant and to ensure the optimal performance in tracking the desired input. To simplify the design of controller, Singular Value Decomposition is adopted to uncouple the channels. This paper first analyzes the frequency responses of the H synthesis and integrator in uncoupled channels. The results indicate that H synthesis can increase the phase margin, which explain that the stability of adaptive optics is improved. Then the simulation of atmospheric turbulence correction is analyzed to testify the performance of adaptive optics. The results show that both integrator and H synthesis can obtain a nearly same satisfying performance, but the former achieves a lower control voltage to correct wavefront than the latter. It validates that H synthesis has a better robustness to deal with the disturbance than integrator. That is to say, H synthesis is able to improve the stability of adaptive optics system.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Dingan Song
AU  - Xinyang Li
AU  - Zhenming Peng
PY  - 2017/06
DA  - 2017/06
TI  - Robust Control of a Deformable Mirror for Adaptive Optics Systems
BT  - Proceedings of the 2017 2nd International Conference on Control, Automation and Artificial Intelligence (CAAI 2017)
PB  - Atlantis Press
SP  - 42
EP  - 52
SN  - 1951-6851
UR  - https://doi.org/10.2991/caai-17.2017.9
DO  - 10.2991/caai-17.2017.9
ID  - Song2017/06
ER  -