Application of modern-control-design methodologies to a multi-segmented deformable-mirror system. Master's thesis

Technical Report · Thu May 23 04:00:00 EDT 1991

OSTI ID:5147919

Vaughan, E M

The multi-segmented deformable mirror system is proposed as an element for a portion of a ballistic missile defense system. The size of the mirror required for this defense function requires that the mirror be developed in segments, and then these segments should be phased together to produce one continuous, large optic. The application of multivariable control system synthesis techniques to provide closed-loop wavefront control of the deformable mirror system is the problem discussed in this thesis. The method of H at infinity control system synthesis using loop-shaping techniques was used to develop a controller that meets a robust performance specification. The number and location of sensors was treated as a design variable, and the structured singular value (mu) was used to determine the performance robustness of the deformable mirror system. Decentralized control issues are also addressed through the use of necessary conditions in an effort to determine a suitable decentralized control structure with performance similar to that of the centralized controller.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (United States)
• OSTI ID: 5147919
• Report Number(s): AD-A-239415/3/XAB; AFIT/CI/CIA--91-032
• Country of Publication: United States
• Language: English

Related Subjects

350000 -- Arms Control-- (1987-)
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450500* -- Military Technology
Weaponry
& National Defense-- Strategic Defense Initiative-- (1990-)
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
BALLISTIC MISSILE DEFENSE
CONTROL
CONTROL SYSTEMS
DEFORMATION
DESIGN
FUNCTIONS
MIRRORS
NATIONAL DEFENSE
PERFORMANCE
SPECIFICATIONS
SYNTHESIS