Structural Mechanics for Adaptive Optics
Abstract
The research performed under this grant developed the structural mechanics of an adaptive optic system consisting of a membrane reflective surface stretched over a pressurized cavity. The work presented here starts under the assumption that the quality of optical system is described by Zernike Polynomials and proceeded by coupling the Zernike Polynomials to the membrane dynamics and provide several methods to control the membrane surface and hence the optical quality. Two actuation approaches are presented: 1) using piezoelectric elements near the boundary of the membrane and one using control of the acoustic pressure in the cavity behind the membrane. Analytical models, experimental and numerical validation and closed loop control are accomplished.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 2009
- Accession Number
- ADA504036
Entities
People
- Daniel J. Inman
Organizations
- Virginia Tech