Decentralized control experiments on the JPL flexible spacecraftDecentralized control experiments were successfully demonstrated for the JPL/AFAL Flexible Structure. A simulation package using MATRIXx showed strong correlation between the simulations and experimental result, while providing a means for test and debug of the various control strategies. Implementation was simplified by a modular software design that was easily transported from the simulation environment to the experimental environment. Control designs worked well for suppression of the dominant modes of the structure. Static decentralized output feedback dampened the excited modes of the structure, but sometimes excited higher order modes upon startup of the controller. A second-order frequency shaping controller helped to eliminate excitation of the higher order modes by attenuating high frequencies in the control effort. However, it also resulted in slightly longer settling times.
Document ID
19910045433
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ozguner, U. (Ohio State Univ. Columbus, OH, United States)
Ossman, K. (Ohio State Univ. Columbus, OH, United States)
Donne, J. (Ohio State Univ. Columbus, OH, United States)
Boesch, M. (Ohio State University Columbus, United States)