A perturbation approach to control of rotational/translational maneuvers of flexible space vehicles

dc.contributor.authorThompson, Roger Cliftonen
dc.contributor.committeechairJunkins, John L.en
dc.contributor.committeememberHendricks, Scott L.en
dc.contributor.committeememberKraige, Luther Glennen
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:49:38Zen
dc.date.adate2012-11-14en
dc.date.available2014-03-14T21:49:38Zen
dc.date.issued1985-04-05en
dc.date.rdate2012-11-14en
dc.date.sdate2012-11-14en
dc.description.abstractAn open loop control law is applied to a flexible spacecraft that admits translational, as well as rotational and flexural motion. The translational degrees of freedom are coupled to the rotation and deformation through the active controls applied to the structure. The objective of any maneuver is to control the attitude of the craft as well as to dissipate any vibrations of the structure. Depending on the type of maneuver specified, the equations of motion may be divided into two distinct optimal control problems. Single-axis rotational maneuvers (with small flexural deformations) constitute a strictly linear problem. The solution of the resulting two Q point boundary value problem is accomplished through the use of matrix exponential functions. Maneuvers which involve the translational degrees of freedom, are described by nonlinear equations. The solution method presented is a algorithm that generates successive approximations similar to quasi-linearization. A perturbed linear optimal control problem is solved for each approximation. Examples are presented which illustrate the effectiveness of the solution methods for both types of maneuvers.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 126 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11142012-040313en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11142012-040313/en
dc.identifier.urihttp://hdl.handle.net/10919/45682en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1985.T566.pdfen
dc.relation.isformatofOCLC# 12965143en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1985.T566en
dc.subject.lcshPerturbation (Mathematics)en
dc.subject.lcshSpace vehicles -- Control systems -- Mathematicsen
dc.titleA perturbation approach to control of rotational/translational maneuvers of flexible space vehiclesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
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