EVALUATION TECHNIQUES FOR ADAPTIVE OPTICS CONTROL SYSTEMS

Award Information
Agency:
Department of Defense
Amount:
$705,452.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Air Force
Award Year:
1995
Phase:
Phase II
Agency Tracking Number:
17890
Solicitation Topic Code:
N/A
Small Business Information
Alphatech, Inc.
50 Mall Road, Burlington, MA, 01803
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Dr Sol W. Gully
 (617) 273-3388
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THIS PROPOSAL WILL REFINE RECENT STABILITY-ROBUSTNESS AND PERFORMANCE-ROBUSTNESS METHODS FROM MULTIVARIABLE FEEDBACK CONTROL THEORY AND USE THESE CONCEPTS TO DEVELOP PRACTICAL TESTING TECHNIQUES, AND EVENTUALLY TESTING HARDWARE, FOR EVALUATING PERFORMANCE PROPERTIES OF ADAPTIVE OPTICS SYSTEMS. THE KEY TO THE DEVELOPMENT OF THE TESTING METHODOLOGY AND HARDWARE IS THE EXPERIMENTAL CALCULATION OF THE SINGULAR VALUES VERSUS FREQUENCY OF RELEVANT (SENSITIVITY AND CLOSED-LOOP) TRANSFER FUNCTION MATRICES ASSOCIATED WITH THE ADAPTIVE OPTICS FEEDBACK CONTROL SYSTEM. AN AUTOMATED TESTING PROCEDURE INVOLVING AN INTEGRATED SET OF TEST HARDWARE AND SOFTWARE WILL BE DEVELOPED. THIS TEST HARDWARE WILL INJECT A VECTOR OF SINUSOIDS (AMPLITUDE AND PHASE) AT THE SYSTEM SENSORS FOR A RANGE OF FREQUENCIES. THE SOFTWARE WILL TRANSLATE THIS SINUSOIDAL INFORMATION INTO THE APPROPRIATE SINGULAR VALUES FOR EVALUATING STABILITY MARGINS, TOLERANCES TO STRUCTURED AND UNSTRUCTURED MODELING ERRORS, AND PERFORMANCE-ROBUSTNESS USING THE SO-CALLED STRUCTURED SINGULAR VALUE METHODOLOGY (MICROANALYSIS). FURTHERMORE, THROUGH THE USE OF THE SINGULAR VALUE DECOMPOSITION (SVD) THEOREM, THE EXPERIMENTAL DATA CAN BE USED TO DERIVE A COMPLETE MULTI-INPUT MULTI-OUTPUT DYNAMIC MODEL OF THE CLOSED-LOOP ADAPTIVE OPTICS SYSTEM.

* information listed above is at the time of submission.

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