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Proceedings Paper

Electrostatic control with discrete area variation for beam steering and focusing using membrane mirrors
Author(s): Miles A. Wickersham; Brian C. Fehrman; Lisa K. Robinson; Andrew W. Downs; Umesh A. Korde
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Paper Abstract

This paper reports on the development and testing of electrostatically actuated deformable mirrors for optical correction. The system considered here is limited to the lower modes of aberration; namely, focus/defocus and tip/tilt. The main problem with using electrostatics is due to the nonlinear relationship between force and distance in such a system. Accordingly, this work uses a nonlinear control system in order to obtain greater deflection for a given voltage. The paper describes recent experimental results with closed loop control.

Paper Details

Date Published: 3 April 2009
PDF: 9 pages
Proc. SPIE 7286, Modeling, Signal Processing, and Control for Smart Structures 2009, 72860F (3 April 2009); doi: 10.1117/12.815564
Show Author Affiliations
Miles A. Wickersham, South Dakota School of Mines and Technology (United States)
Brian C. Fehrman, South Dakota School of Mines and Technology (United States)
Lisa K. Robinson, South Dakota School of Mines and Technology (United States)
Andrew W. Downs, South Dakota School of Mines and Technology (United States)
Umesh A. Korde, South Dakota School of Mines and Technology (United States)


Published in SPIE Proceedings Vol. 7286:
Modeling, Signal Processing, and Control for Smart Structures 2009
Douglas K. Lindner, Editor(s)

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