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Title:Optimizing Parameters and Controls for Maneuvering Flexible Structures
Author(s):Lisowski, Ronald James
Department / Program:Aeronautical and Astronautical Engineering
Discipline:Aeronautical and Astronautical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Engineering, Aerospace
Abstract: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.
Issue Date:1984
Type:Text
Description:91 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1984.
URI:http://hdl.handle.net/2142/70629
Other Identifier(s):(UMI)AAI8502223
Date Available in IDEALS:2014-12-15
Date Deposited:1984


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