Optimizing Parameters and Controls for Maneuvering Flexible Structures

The combined problem of optimizing both the parameters and the control for maneuvering flexible structures is addressed. The necessary conditions for the general problem are defined and a numerical technique for the solution is discussed. Implementing the numerical solution is shown to be practical using reduced-order structural models. Optimal controls are smoothed by including control derivative penalties in order to allow terminal values for the controls to be specified. The optimization leads to the investigation of structures that require only simple rigid body controls for accomplishing the maneuver while ensuring minimal modal excitation at the maneuver's completion. Numerical examples are presented for single axis slew maneuvers of a symmetric four boom flexible structure.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Aeronautical and Astronautical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Lisowski, Ronald James

• Engineering, Aerospace

Identifier

(UMI)AAI8502223

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70629