{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/70629"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/70629","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Optimizing Parameters and Controls for Maneuvering Flexible Structures","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.","abstract_html":"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.","abstract_has_math":false,"creators":["Lisowski, Ronald James"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Aeronautical and Astronautical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T23:55:54Z","date_published":"2014-12-15T23:55:54Z","updated_at":"2026-07-22T22:26:03Z","subjects":["Engineering, Aerospace"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8502223"],"render_values":[{"text":"(UMI)AAI8502223","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/70629","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Lisowski, Ronald James"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T23:55:54Z","10000-01-01","1984"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Aeronautical and Astronautical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Aerospace"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/70629","(UMI)AAI8502223"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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.","Made available in DSpace on 2014-12-15T23:55:54Z (GMT). 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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.","Made available in DSpace on 2014-12-15T23:55:54Z (GMT). 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