Title :
Closed-form Grammians and model reduction for flexible space structures
Author :
Williams, Trevor
Author_Institution :
NASA Langley Res. Center, Hampton, VA, USA
fDate :
3/1/1990 12:00:00 AM
Abstract :
The author derives analytical expressions for the Grammians of a model given in modal coordinates for the dynamics of a flexible space structure (FSS). These expressions are then used as the basis for a new algorithm to compute a dominant reduced-order model for such a system in an efficient manner. The resulting reduced-order model is obtained directly rather than by truncating a balanced model of the entire system, thus giving rise to significant efficiency gains for the typical FSS case where the reduced-order model is of very much lower order than the original system
Keywords :
aerospace control; controllability; Grammians; flexible space structures; modal coordinates; model reduction; reduced-order model; Aerodynamics; Algorithm design and analysis; Bandwidth; Costs; Design methodology; Equations; Optimal control; Optimization methods; Reduced order systems; Springs;
Journal_Title :
Automatic Control, IEEE Transactions on
