dc.contributor.author Thompson, Roger Clifton en_US dc.date.accessioned 2014-03-14T21:49:38Z dc.date.available 2014-03-14T21:49:38Z dc.date.issued 1985-04-05 en_US dc.identifier.other etd-11142012-040313 en_US dc.identifier.uri http://hdl.handle.net/10919/45682 dc.description.abstract An 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. Singleâ 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 quasiâ 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_US dc.format.medium BTD en_US dc.publisher Virginia Tech en_US dc.relation.haspart LD5655.V855_1985.T566.pdf en_US dc.subject Perturbation (Mathematics) en_US dc.subject.lcc LD5655.V855 1985.T566 en_US dc.title A perturbation approach to control of rotational/translational maneuvers of flexible space vehicles en_US dc.type Thesis en_US dc.contributor.department Engineering Mechanics en_US dc.description.degree Master of Science en_US thesis.degree.name Master of Science en_US thesis.degree.level masters en_US thesis.degree.grantor Virginia Polytechnic Institute and State University en_US thesis.degree.discipline Engineering Mechanics en_US dc.contributor.committeechair Junkins, John L. en_US dc.contributor.committeemember Hendricks, Scott L. en_US dc.contributor.committeemember Kraige, Luther Glenn en_US dc.identifier.sourceurl http://scholar.lib.vt.edu/theses/available/etd-11142012-040313/ en_US dc.date.sdate 2012-11-14 en_US dc.date.rdate 2012-11-14 dc.date.adate 2012-11-14 en_US
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