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8 December 1998 Current status of the UltraLITE control technology testbed for optical mirror mass control
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A control technology testbed for the Ultra-Lightweight Imaging Technology Experiment (UltraLITE) program at the U.S. Air Force Research Laboratory is described. The goal of the testbed is to demonstrate technology readiness for controlling boom-mounted, rigid body mirror positioning while rejecting spacecraft disturbances and overshoot oscillations due to rigid body retargeting. This paper describes the three main phases of the testbed: concept definition, mirror initial simulator bench top experiments and the boom/mirror control experiments. Emphasis on recent results from the bench top and boom/mirror experiment will be presented. To date, designs of several different types of disturbance rejection controllers for meeting the nanometer positioning requirements have been shown for the mirror inertial simulator mounted to an optical bench. Control methodologies for designing these systems included ARMA and LQG/LQR methods augmented with control logic for coarse control correction also included. Brief explanations of the experiment's traceability to the UltraLITE space imager concept and an explanation of the boom/mirror hardware setup are also included.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lawrence Robertson III, Steven Fulton Griffin, Michael K. Powers, and Richard G. Cobb "Current status of the UltraLITE control technology testbed for optical mirror mass control", Proc. SPIE 3430, Novel Optical Systems and Large-Aperture Imaging, (8 December 1998);

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