Attitude control system testing on SCOLEThis paper presents implementation of two control policies on SCOLE (Space Control Laboratory Experiment), a laboratory apparatus representing an offset-feed antenna attached to the Space Shuttle by a flexible mast. In the first case, the flexible mast was restrained by cables, permitting modeling of SCOLE as a rigid-body. Starting from an arbitrary state, SCOLE was maneuvered to a specified terminal state using rigid-body minimum-time control law. In the second case, the so called single step optimal control (SSOC) theory is applied to suppress vibrations of the flexible mast mounted as a cantilever beam. Based on the SSOC theory, two parameter optimization algorithms were developed.
Document ID
19890024297
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shenhar, J. (NASA Langley Research Center Hampton, VA, United States)
Sparks, D., Jr. (NASA Langley Research Center Hampton, VA, United States)
Williams, J. P. (NASA Langley Research Center Hampton, VA, United States)
Montgomery, R. C. (NASA Langley Research Center Hampton, VA, United States)