Optimization of actuator and sensor placement for on-orbit identification in large flexible spacecraftThere has been considerable research on choosing actuator and sensor locations in large flexible spacecraft in order to optimize the controllability and observability of the system, or to maximize some objective function of control system performance. Future large flexible spacecraft may require on-orbit identification of the structure to tune the control system, because such tests cannot be performed in a one-g environment before launch. This indicates that the choice of actuator and sensor locations must serve a dual purpose, for control and for identification. This paper develops concepts for a degree of identifiability and studies placement of actuators and sensors on a free-free beam to optimize such objective functions. The results in this simple situation suggest that in free-free spacecraft structures in orbit, placement for control and placement for identification may often be consistent objectives rather than conflicting objectives.
Document ID
19900060705
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bergmann, Martin (Columbia Univ. New York, NY, United States)
Longman, Richard W. (Columbia University New York, United States)
Juang, Jer-Nan (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 90-3516
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference