Numerical computation and implementation of H-infinity controllers for retarded and neutral time delay systems

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buir.advisorÖzbay, Hitay
dc.contributor.authorYeğin, Mustafa Oğuz
dc.date.accessioned2017-12-14T09:33:40Z
dc.date.available2017-12-14T09:33:40Z
dc.date.copyright2017-11
dc.date.issued2017-11
dc.date.submitted2017-12-13
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionCataloged from PDF version of article.en_US
dc.descriptionThesis (M.S.): Bilkent University, Department of Electrical and Electronics Engineering, İhsan Doğramacı Bilkent University, 2017.en_US
dc.descriptionIncludes bibliographical references (leaves 59-61).en_US
dc.description.abstractBeing the most commonly encountered systems in engineering applications, design of robustly stabilizing H∞ controller with maximum performance for timedelay linear time-invariant systems has been an attractive topic in control theory for many decades. A Matlab package called HINFCON is published in 1996. It applies an early solution to the problem, the so-called Toker-Özbay formula. It assumes that the coprime factorization is given, and computes the optimal performance level and the corresponding optimal controller through a manual iteration. The software introduced in this thesis, combines HINFCON with another Matlab package, YALTA, that is being used to do stability analysis for neutral/retarded systems, to perform coprime and inner-outer factorizations of the given infinite dimensional system. Additionally, an iterative algorithm for computation of optimal performance level automatically is implemented to prevent any manual computation. Finally, the Matlab command fitfrd is incorporated into the software that is used for approximation of the optimal controller to obtain a robustly stabilizing suboptimal finite dimensional controller. This thesis also introduces a new structure of the optimal controller which is more reliable and implementable on practical systems. Various examples are solved to compare the suboptimal controllers obtained by using the new structure with direct approximation of plant and optimal controller.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityby Mustafa Oğuz Yeğin.en_US
dc.format.extentxi, 72 leaves : charts (some color) ; 30 cmen_US
dc.identifier.itemidB157229
dc.identifier.urihttp://hdl.handle.net/11693/35678
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectRobust controlen_US
dc.subjectH∞ controlleren_US
dc.subjectInfinite dimensional systemsen_US
dc.subjectTimedelay systemsen_US
dc.subjectNeutral and retarded systemsen_US
dc.titleNumerical computation and implementation of H-infinity controllers for retarded and neutral time delay systemsen_US
dc.title.alternativeNötr ve rötarlı zaman gecikmeli sistemler için H-sonsuz kontrolcuların hesaplanması ve uygulanmasıen_US
dc.typeThesisen_US

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