Modeling and Slew-Maneuver Control of a Flexible Spacecraft

<p>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.</p>

Name thesis:degree_name

Master of Science in Space Science

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Physical Sciences

Year

2005

Author dc:creator

• Eckhart, Jeremy E.

Contributors dc:contributor

• Mahmut Reyhanoglu
• Bereket Berhane
• Robert Fleck

• modeling
• slew-maneuver
• flexible
• spacecraft
• Aerospace Engineering
• Navigation, Guidance, Control and Dynamics
• Space Vehicles

Repository record dc:identifier

https://commons.erau.edu/db-theses/52

OAI identifier oai:identifier

oai:commons.erau.edu:db-theses-1069