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dc.contributor.supervisorFilizadeh, Shaahin (Electrical and Computer Engineering)en
dc.contributor.authorYahyaie, Farhad
dc.date.accessioned2010-12-14T15:53:53Z
dc.date.available2010-12-14T15:53:53Z
dc.date.issued2010-12-14T15:53:53Z
dc.identifier.urihttp://hdl.handle.net/1993/4304
dc.description.abstractThis thesis introduces a new optimization algorithm for simulation-based design of systems with multi-modal, nonlinear, black box objective functions. The algorithm extends the recently introduced adaptive multi-modal optimization by incorporating surrogate modeling features similar to response surface methods (RSM). The resulting optimization algorithm has reduced computational intensity and is therefore well-suited for optimization of expensive black box objective functions. The algorithm relies on an adaptive and multi-resolution mesh to obtain an initial estimation of the objective function surface. Local surrogate models are then constructed to represent the objective function and to generate additional trial points in the vicinity of local minima discovered. The steps of mesh refinement and surrogate modeling continue until convergence criteria are met. An important property of this algorithm is that it produces progressively accurate surrogate models around the local minima; these models can be used for post-optimization studies such as sensitivity and tolerance analyses with minimal computational effort. This algorithm is suitable for optimal design of complex engineering systems and enhances the design cycle by enabling computationally affordable uncertainty analysis. The mathematical basis of the algorithm is explained in detail. The thesis also demonstrates the effectiveness of the algorithm using comparative optimization of several multi-modal objective functions. It also shows several practical applications of the algorithm in the design of complex power and power-electronic systems.en
dc.format.extent2303992 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectmulti-modal optimizationen
dc.subjectsurrogate modelingen
dc.subjectsimulation-based designen
dc.subjectblack-box optimizationen
dc.titleSimulation-based design of multi-modal systemsen
dc.typeinfo:eu-repo/semantics/masterThesis
dc.typemaster thesisen_US
dc.degree.disciplineElectrical and Computer Engineeringen_US
dc.contributor.examiningcommitteeGole, Aniruddha (Electrical and Computer Engineering) Sepehri, Nariman (Mechanical and Manufacturing Engineering)en
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.noteFebruary 2011en


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