This research focused on lightweight, in plane actuated, deformable mirrors, with the ultimate goal of developing a 20 meter light gathering aperture for space telescopes The 0.127 meter diameter deformable mirror small scale testbed was modelled in finite elements using MSC Nastran software and then used as a basis for a quasi static controller Experi mental tracking of Zernike tip, tilt, and defocus modes was accomplished The analytical solutions to plate membrane and beam string ordinary differential equations were developed A simplified approach to modelling the axisymmetric cases was also presented A novel static control strategy, the Modal Transformation Method, was developed to form Zernike surfaces within an interior, or clear aperture, region using a number of statically actuated Bessel based vibration modes The scaling problem for membrane optics is addressed Significantly, it is shown linear modelling may correctly explain the behavior of small scale models, but only non linear models will account for the important terms which govern the full scale large aperture membrane telescopes....
|Title||:||Lightweight tn-Plane Actuated Deformable Mirrors for Space Telescopes|
|Publisher||:||BiblioScholar November 21, 2012|
|Number of Pages||:||242 pages|
|File Size||:||877 KB|
|Status||:||Available For Download|
|Last checked||:||21 Minutes ago!|