2002 modelling and nonlinear control of a low-power gas turbine

《2002 modelling and nonlinear control of a low-power gas turbine》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。

1、ModellingandNonlinearControlofaLow-powerGasTurbine(Theses)writtenbyPiroskaAilerSupervisor:Dr.ImreSántaDepartmentofAircraftandShipsBudapestUniversityofTechnologyandEconomicsProf.KatalinHangosDepartmentofComputerScienceUniversityofVeszprémSystemandControlLaboratoryComputerandAutomationRes

2、earchInstituteHungarianAcademyofSciencesDepartmentofAircraftandShipsBudapestUniversityofTechnologyandEconomicsBudapest,Hungary20021MotivationandaimoftheresearchworkRecently,therehasbeenagrowingneedforcontrolsystemsofgastur-bineenginesbecauseoftheimportanceoftheirapplicationareas(avi-ati

3、on,electricpowertrade,gastransportandmilitaryapplication)andbecauseofthedemandsontheiroperationandthesafetyrequirementsofthem.Thescopeoftheirdutieshasbeenwidenedandtherequire-mentsontheiraccuracy(trackingofthecharacteristicswithmaximumeciency)hasalsobeenincreased.Fortunately,atthesamet

4、ime,theareaofcontroldesignmethodologyhassignicantlyimproved,andnon-lineartechniquesaregainingmoreandmoreground[6]inadditiontothetraditionallinearmethods.Thisdevelopmenthasspecialimpor-tanceincaseofprocess-(forexamplethermodynamical)systems[5]aswellasinthecaseofelectricalandmechanicalsy

5、stems.Fromthepointofviewofdynamicmodelling,gasturbinescanbere-gardedasamixedthermodynamical-mechanicalsystems.Thedynamicconservationbalanceandthealgebraicequationsofthemodelarenon-linear,sotheyrepresentacomplexproblembothformsystemanalysisandcontrolpointofview.Therefore,themostcommonway

6、toperformdynamicanalysisandcontroldesignistoapplyalocallylinearizedmodelaroundanoperatingpointinsteadofconsideringanonlinearmodel.Ontheotherhand,newmathematicalandcontrolmethodsandtoolshasrecentlycametothefrontoftheresearchandweredevelopedwhichareabletohandlenonlinearsystemsandmodelsusi

7、ngspecialnonlineartechniques.Thustheresultsofthedynamicanalysisofnonlinearmodelscanbeproperlyappliedtononlinearcontroldesign[6],[10].Basedonthesefactstheaimoftheresearchworksummarizedinmydissertationwastoinvestigatethepossibilityofdesigninganonlinearcontrollersatisfyingprescrib