Near-minimum time, closed-loop slewing of flexible spacecraft
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The near-minimum time single-axis slewing of a flexible spacecraft with simultaneous suppression of vibration of elastic modes is considered. The hyperbolic tangent (tahh) function is used as a smooth approximation to the discontinuous sgn function occurring in the rigid body "bang-bang" control. Variable structure control concepts are used to identify the necessary characteristics of the control switching line. Simulations of the rest-to-rest and tracking maneuvers indicate that the elastic energy can be reduced by several orders of magnitude with only a modest increase in the maneuver time. © 1990 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.
author list (cited authors)
Byers, R. M., Vadali, S. R., & Junkins, J. L.