Frequency based design of modal controllers for adaptive optics systems

被引:16
作者
Agapito, Guido [1 ]
Battistelli, Giorgio [2 ]
Mari, Daniele [2 ]
Selvi, Daniela [2 ]
Tesi, Alberto [2 ]
Tesi, Pietro [3 ]
机构
[1] Osserv Astrofis Arcetri, I-50125 Florence, Italy
[2] Univ Florence, DSI, Dipartimento Sistemi & Informat, I-50139 Florence, Italy
[3] Univ Genoa, DIBRIS, I-16145 Genoa, Italy
关键词
CONTROL LAW; VARIANCE;
D O I
10.1364/OE.20.027108
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper addresses the problem of reducing the effects of wavefront distortions in ground-based telescopes within a "Modal-Control" framework. The proposed approach allows the designer to optimize the Youla parameter of a given modal controller with respect to a relevant adaptive optics performance criterion defined on a "sampled" frequency domain. This feature makes it possible to use turbulence/vibration profiles of arbitrary complexity (even empirical power spectral densities from data), while keeping the controller order at a moderate value. Effectiveness of the proposed solution is also illustrated through an adaptive optics numerical simulator. (C) 2012 Optical Society of America
引用
收藏
页码:27108 / 27122
页数:15
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