Variable structure control systems

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dc.contributor.advisorBraae, Martinen_ZA
dc.contributor.authorGinsberg, David Wen_ZA
dc.date.accessioned2016-04-12T09:34:16Z
dc.date.available2016-04-12T09:34:16Z
dc.date.issued1989en_ZA
dc.descriptionThe primary aims of this thesis, is to provide a body of knowledge on variable structure system theory and to apply the developed design concepts to control practical systems. It introduces the concept of a structure. The main aim in designing variable structure controllers, is to synthesize a variable structure system from two or more single structure systems, in such a way that the ensuing system out-performs its component structures. When a sliding mode is defined, the ensuing closed loop behaviour of the system is invariant to plant parameter changes and external disturbances. A variable structure controller was designed for a servo motor and successfully applied to the system. In practice, the phase plane representative point does not slide at infinite frequency with infinitesimal amplitude along the switching surface(s). Thus, the concept of a quasi-sliding regime was introduced. For high performance system specifications, the phase plane representative point could cycle about the origin. In some instances, sliding could be lost. For high speed applications, a novel design modification ensured that the system did not lose sliding. In addition, the controller could track a rapidly changing set point. Successful results support the developed theory.en_ZA
dc.identifier.apacitationGinsberg, D. W. (1989). <i>Variable structure control systems</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/18787en_ZA
dc.identifier.chicagocitationGinsberg, David W. <i>"Variable structure control systems."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1989. http://hdl.handle.net/11427/18787en_ZA
dc.identifier.citationGinsberg, D. 1989. Variable structure control systems. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Ginsberg, David W DA - 1989 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1989 T1 - Variable structure control systems TI - Variable structure control systems UR - http://hdl.handle.net/11427/18787 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18787
dc.identifier.vancouvercitationGinsberg DW. Variable structure control systems. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1989 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18787en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical Engineeringen_ZA
dc.subject.otherControl theoryen_ZA
dc.subject.otherAutomatic controlen_ZA
dc.titleVariable structure control systemsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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