On actuator placement for robust time-optimal control of uncertain flexible spacecraftThe problem of computing open-loop, on-off jet firing logic for flexible spacecraft in the face of plant modeling uncertainty is investigated. The primary control objective is to achieve a fast maneuvering time with a minimum of structural vibrations during and/or after a maneuver. This paper is also concerned with the problem of selecting a proper pair of jets for practical trade-offs among the maneuvering time, fuel consumption, structural mode excitation, and performance robustness. A time-optimal control problem subject to parameter robustness constraints is formulated. A three-mass-spring model of flexible spacecraft with a rigid-body mode and two flexible modes is used to illustrate the concept.
Document ID
19920072661
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wie, Bong (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Sinha, Ravi (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Liu, Qiang (Arizona State University Tempe, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 92-4607
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference