ANEW APPROACH TO MEMBRANE MIRROR STABILIZATION

Award Information
Agency:
Department of Defense
Branch:
Air Force
Amount:
$49,999.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
N/A
Agency Tracking Number:
9126
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Sparta Inc
21 Worthen Rd, Lexington, MA, 02173
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 DR R V RAMNATH
 (617) 863-1060
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE PROBLEM OF INSTABILITY IN MEMBRANE MIRRORS USED IN WAVEFRONT CORRECTORS AND THEIR STABILIZATION BY ACTIVE CONTROL IS PROPOSED. SUCH SYSTEMS DISPLAY AN INSTABILITY IN THE TRANSVERSE VIBRATION, WHICH LEADS TO UNACCEPTABLE ERRORS IN OPTICS AND AN INABILITY TO INCREASE THE NUMBER OF MIRROR ACTUATORS TO LEVELS COMPATIBLE WITH FUTURE APPLICATIONS. RECOGNITION OF THE INSTABILITY MECHANISM AND ITS STABILIZATION ARE DIFFICULT DUE TO THE MATHEMATICAL COMPLEXITY. THE POWERFUL GMS TECHNIQUE DEVELOPED BY THE PRINCIPAL INVESTIGATOR WILL BE EMPLOYED TO SOLVE THE PROBLEM. SIMILAR SYSTEMS HAVE BEEN SUCCESSFULLY ANALYZED BY THIS METHOD. PHASE I GOALS INCLUDE (1) GMS ANALYSIS OF MEMBRANE DYNAMICS AND, (2) IDENTIFICATION OF PARAMETERS INFLUENCING INSTABILITIES, AND (3) DEVELOPMENT OF CONTROL LAWS FOR STABILIZATION AND/OR DESIGN CONSTRAINTS.

* information listed above is at the time of submission.

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