Beam Train Flexible Structure Control for Airborne/Space-Based Systems

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$749,982.00
Award Year:
2003
Program:
SBIR
Phase:
Phase II
Contract:
FA9453-03-C-0224
Award Id:
57400
Agency Tracking Number:
021NM-2070
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
12030 Sunrise Valley Drive, Suite 400, Reston Plaz, Reston, VA, 20191
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
072651391
Principal Investigator:
LawrenceDavis
Project Manager
(321) 768-6500
ldavis@psi-controls.com
Business Contact:
PaulBanas
Vice President
(985) 639-1540
paul.banas@psislidell.com
Research Institute:
n/a
Abstract
The increasing demands for higher performance optical acquisition, tracking, and pointing (ATP) systems, combined with cost pressures requiring lighter payloads, indicates a need for a new approach to slewing and structural control. The use of lighterweight structures exacerbates the interaction of slew maneuvers and acoustic disturbances with the system's flexible modes, causing errors in the alignment and shape of the optical components that result in degraded optical performance. Such gimbaledsystems will require control systems that can accommodate the time-varying disturbances, rigid-body, and flexible dynamics resulting from the changing geometry as the payload is slewed.To address these issues, we showed the feasibility of (Phase I) and propose to demonstrate (Phase II) an adaptive control design approach that works during operation to autonomously identify the time-varying gimbaled optical system dynamics affecting theslewing bandwidth, then design feedback and feedforward control laws to achieve predefined performance and stability criteria. Our technical approach is based on our Frequency Domain Expert (FDE) control algorithm, which has been demonstrated on theInternational Space Station (ISS) as part of the Middeck Active Control Experiment (MACE-II) and is currently being applied to the PowerSail program.

* information listed above is at the time of submission.

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