Numerical and experimental modal analysis of a 1-meter deformable mirror

被引：0
|
作者：
Gasmi, R. [1 ]
Dournaux, J. L. [1 ]
Cousty, R. [2 ]
Le Bihan, D. [3 ]
Crepy, B. [2 ]
Jagourel, P. [1 ]
机构：
[1] Univ Paris Diderot, GEPI, Observ Paris, CNRS, F-92195 Meudon, France
[2] Cilas, F-45100 Orleans, France
[3] Off Natl Etud & Rech Aerosp, F-92322 Chatillon, France
来源：
PROCEEDINGS OF ISMA2010 - INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING INCLUDING USD2010 | 2010年
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The future E-ELT (European Extremely Large Telescope), an ESO's project whose first light is planned for 2017, will have a 42-meter primary mirror. It will integrate a 2.5-meter deformable mirror to correct the effects of atmospheric turbulence. French deformable mirror's manufacturer CILAS has proposed a concept for this deformable mirror where the deformable mirror is made of a reflective membrane supported by actuators fixed in a rigid base plate. Because of its large size, vibrations due to dynamic mechanical behaviour may occur when working. This paper presents modal analysis led on a 1-meter prototype of this deformable mirror and how experimental modal analysis was used to determine the eigenmodes of this structure. Computed and measured eigenmodes are compared.
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页码：4463 / 4470
页数：8
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