Structural Analysis Of An Adaptive Primary Mirror

D L Niemiec

doi:10.1117/12.939277

5 January 1984 Structural Analysis Of An Adaptive Primary Mirror

D L Niemiec

Author Affiliations +

Proceedings Volume 0450, Structural Mechanics of Optical Systems I; (1984) https://doi.org/10.1117/12.939277
Event: 1983 Cambridge Symposium, 1983, Cambridge, United States

Abstract

An adaptive primary mirror design containing four mirror segments and 56 push-pull actuators is examined for optical correction capability and compatibility with control system dynamics. To perform this analysis and design effort, a finite element model of a primary mirror, its backup structure, a set of tangent bars, and 14 actuators was developed. Influence functions were obtained for motion at the various actuator armature locations. To satisfy dynamic control bandwidth requirements, a mirror modal frequency of 32 Hz (approximately one magnitude higher than the required bandwidth) had to be met for the structural system modelled with unpowered actuators. This paper details the finite element model and model results, as well as addresses the residual error resulting from a best static fit to various aberrations utilizing the influence functions.

Citation Download Citation

D L Niemiec "Structural Analysis Of An Adaptive Primary Mirror", Proc. SPIE 0450, Structural Mechanics of Optical Systems I, (5 January 1984); https://doi.org/10.1117/12.939277

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE