Factors that limit control effectiveness in self-excited noise driven combustors - _201205_phd.pdf

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1、FACTORSTHATLIMITCONTROLEFFECTIVENESSINSELF-EXCITEDNOISEDRIVENCOMBUSTORSADissertationPresentedtoTheAcademicFacultybyJackieH.CrawfordIIIInPartialFulfillmentoftheRequirementsfortheDegreeDoctorofPhilosophyintheSchoolofAerospaceEngineeringGeorgiaInstitute

2、ofTechnologyMay2012COPYRIGHT2012BYJACKIEH.CRAWFORDIIIFACTORSTHELIMITCONTROLEFFECTIVENESSINSELF-EXCITEDNOISEDRIVENCOMBUSTORSApprovedby:Dr.TimLieuwen,AdvisorDr.JerrySeitzmanSchoolofAerospaceEngineeringSchoolofAerospaceEngineeringGeorgiaInstituteofTechn

3、ologyGeorgiaInstituteofTechnologyDr.ErikVerriest,Co-AdvisorDr.MassimoRuzzeneSchoolofElectricalandComputerSchoolofAerospaceEngineeringEngineeringGeorgiaInstituteofTechnologyGeorgiaInstituteofTechnologyDr.WassimHaddadSchoolofAerospaceEngineeringGeorgia

4、InstituteofTechnologyDateApproved:March26,2012ACKNOWLEDGEMENTSWhiledoingtheresearchforthisthesisIhavebeenrepeatedstruckbyhowmuchserendipityplaysaroleinguidingevents.Researchinvolvesmorethansearchingfortherightpieceofinformationoranalysistool.Havingth

5、ecorrectpeoplearoundmehavehelpedtremendouslyinseeingthisthesistocompletion.IwouldliketothankmyadvisorTimLieuwenforputtingupwithmyuniquebrandofstubbornnessandindependentmindedness.Despitethis,hehasplacedalargeamountoftrustinthevisionIhadforthisresearc

6、handingivingmetheleewaytoaccomplishthingsintheorderandmatterIthoughtwasmostimportantandefficient.IalwayshadhisearavailablewhenIneedit.Mostimportantly,Iappreciatethefreedomtoperformresearchwithoutcompromisingmysenseofself.Myco-advisorErikVerriestserve

7、dasmytourguidetotheexcitingandexoticworldoftimedelayandstochasticsystem.Hiswillingnesstoshowmewheretolooksavedmefromcountlessdeadendsandhisabilitytoexpressmathematicaldetailsinverysimplelanguageisastounding.Icannotbegintoexpresshowthispositivelyinflu

8、encedmystyleofthinking.Finally,IwouldalsoliketothankWassimHaddadfortakingthetimetomakeextraordinarydetailedandinsightfulcommentsduringmythesisproposal.Theinfluenceofthosecommentscandefinitelybefeltincertainsectionsofthisthesis.Mypeersalsohelpedmegrea