The usefulness of open loop model order reduction techniques for application of flexible spacecraft dynamics models was assessed. Approaches identified involve parameter optimization; aggregation; singular perturbation; modal dominance; component cost analysis; and internal balancing. The latter three approaches appear to be most meaningful, and convenient in applications. The problem of model order reduction is reviewed, and each of the six approaches is discussed. The latter three approaches are applied to the case of a long, flexible beam in space, controlled with two line torquers.
Mathematical Models of Flexible Spacecraft Dynamics: A Survey of Order Reduction Approaches. Annual Report 1984
1985
13 pages
Report
No indication
English
Unmanned Spacecraft , Manned Spacecraft , Control theory , Flexible spacecraft , Large space structures , Spacecraft models , Dynamic models , Mathematical models , Systems analysis , Controllability , Design analysis , Observability (Systems) , Reduced order filters , Satellite attitude control , Vibration damping , Foreign technology