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Modeling, Calibration and Control for Extreme-Precision MEMS Deformable Mirrors

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
77567
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
053670
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Iris AO, Inc.
2680 Bancroft Way Berkeley, CA 94704-1717
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2006
Title: Modeling, Calibration and Control for Extreme-Precision MEMS Deformable Mirrors
Agency: NASA
Contract: NNG06LA11C
Award Amount: $69,997.00
 

Abstract:

Iris AO will develop electromechanical models and actuator calibration methods to enable open-loop control of MEMS deformable mirrors (DMs) with unprecedented precision. Error budget analysis will establish feasibility of open-loop operation with nanometer-scale positioning accuracy and sub-nanometer resolution and stability. Although a number of MEMS based DMs have been demonstrated for adaptive optics applications, little work has been carried out to characterize their wavefront correction ability to precisions required by NASA space telescope missions. This proposal directly addresses this issue for a class of electrostatically actuated DMs with extremely high optical quality and low voltage-to-stroke ratios. High-precision, large actuator count DMs are critical for high-contrast astrophysical imagers, including the Terrestrial Planet Finder program. Existing non-MEMS DMs that approach NASA requirements feature high actuation voltages, low actuator densities and uncertain scalability beyond a few thousand actuators. MEMS DMs offer natural scalability, but do not yet meet the stringent precision and stability requirements for space telescopes applications. Better understanding of the electromechanical behavior, positioning error sources and calibration methods for these devices is essential to understand and improve performance, bringing MEMS DMs to mission readiness.

Principal Investigator:

Michael A. Helmbrecht
Principal Investigator
5108492375
michael.helmbrecht@irisao.com

Business Contact:

Nathan Doble
Business Official
5108492375
nathan.doble@irisao.com
Small Business Information at Submission:

Iris AO, Inc.
2680 Bancroft Way Berkeley, CA 94704

EIN/Tax ID: 043693091
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No