Suppressing low-order eigenmodes with local control for deformable mirrors

Rikard Heimsten; Mette Owner-Petersen; Thomas RuppelDouglas G. MacMynowskiTorben Andersen

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Suppressing low-order eigenmodes with local control for deformable mirrors

机译：Suppressing low-order eigenmodes with local control for deformable mirrors

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摘要

To improve the mechanical characteristics of actively controlled continuous faceplate deformable mirrors in adaptive optics, a strategy for reducing crosstalk between adjacent actuators and for suppressing low-order eigenmodes is proposed. The strategy can be seen as extending Saint-Venant's principle beyond the static case, for small local families of actuators. An analytic model is presented, from which we show the feasibility of the local control. Also, we demonstrate how eigenmodes and eigenfrequencies are affected by mirror parameters, such as thickness, diameter, Young's modulus, Poisson's ratio, and density. This analysis is used to evaluate the design strategy for a large deformable mirror, and how many actuators are needed within a family.

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来源
《Optical Engineering》 |2012年第2期|026601-1-026601-9|共9页
作者
Rikard Heimsten; Mette Owner-Petersen; Thomas RuppelDouglas G. MacMynowskiTorben Andersen;
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作者单位

Lund University Lund Observatory Box 43, SE-221 00 Lund Sweden;

University of Stuttgart Institute for System Dynamics, Postfach 80 11 40 D-70511 Stuttgart Germany;

California Institute of Technology Control and Dynamical Systems, 1200 East California Boulevard Pasadena, California 91125;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
distributed control; adaptive optics; large deformable mirror; dimensionless mode analysis;

Suppressing low-order eigenmodes with local control for deformable mirrors

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