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dc.contributor.authorJoe, Hyunsiken_US
dc.date.accessioned2014-03-14T21:36:34Z
dc.date.available2014-03-14T21:36:34Z
dc.date.issued2005-05-10en_US
dc.identifier.otheretd-05232005-120243en_US
dc.identifier.urihttp://hdl.handle.net/10919/42781
dc.description.abstractThe Coulomb propulsion system has no exhaust plume impingement problem with neighboring spacecraft and does not contaminate their sensors because it requires essentially no propellant. It is suitable to close formation control on the order of dozens of meters. The Coulomb forces are internal forces of the formation and they influence all charged spacecraft at the same time. Highly nonlinear and strongly coupled equations of motion of Coulomb formation makes creating a Coulomb control method a challenging task. Instead of positioning all spacecraft, this study investigates having a sensor craft be sequentially controlled using dedicated drone craft. At least three drone craft are required to control a general sensor craft position in the inertial space. However, the singularity of a drone plane occurs when a sensor craft moves across the drone plane. A bang-bang control method with a singularity check can avoid this problem but may lose formation control as the relative distances grow bounded. A bang-coast-bang control method utilizing a reference trajectory profile and drone rest control is introduced to increase the control effectiveness. The spacecraft are assumed to be floating freely in inertial space, an approximation of environments found while underway to other solar system bodies. Numerical simulation results show the feasibility of sensor craft control using Coulomb forces.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartThesis_Hyunsik_Joe.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectDrone craften_US
dc.subjectSensor craften_US
dc.subjectSpacecraften_US
dc.subjectFormation flyingen_US
dc.subjectCoulomb forcesen_US
dc.subjectDrone plane singularityen_US
dc.titleSensor Craft Control Using Drone Craft with Coulomb Propulsion Systemen_US
dc.typeThesisen_US
dc.contributor.departmentAerospace and Ocean Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineAerospace and Ocean Engineeringen_US
dc.contributor.committeechairSchaub, Hanspeteren_US
dc.contributor.committeememberHall, Christopher D.en_US
dc.contributor.committeememberHendricks, Scott L.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05232005-120243/en_US
dc.date.sdate2005-05-23en_US
dc.date.rdate2005-06-15
dc.date.adate2005-06-15en_US


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