Date of Award
Spring 2005
Document Type
Thesis - Open Access
Degree Name
Master of Science in Space Science
Department
Physical Sciences
Committee Chair
Mahmut Reyhanoglu
Committee Member
Bereket Berhane
Committee Member
Robert Fleck
Abstract
Slew-maneuver control problem is studied for a flexible spacecraft consisting of a rigid main body to which a long flexible appendage is attached. Nonlinear dynamical system models are developed using both distributed parameter modeling and discrete parameter modeling; these models are shown to be equivalent for appropriately chosen system parameters. Lyapunov-based nonlinear feedback controllers are designed for the control of rigid-body motion while suppressing the lowest frequency vibrational mode. In case of large-angle maneuvers, these nonlinear controllers are shown to outperform the linearization-based controllers including the filtered proportional-derivative (PD) controllers as well as the linear quadratic regulator (LQR) controllers. Finally, the theoretical development is applied to a benchmark flexible system and a number of computer simulations are included to illustrate the results.
Scholarly Commons Citation
Eckhart, Jeremy E., "Modeling and Slew-Maneuver Control of a Flexible Spacecraft" (2005). Master's Theses - Daytona Beach. 52.
https://commons.erau.edu/db-theses/52
