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基于变指数趋近律的永磁同步电机滑模控制.docx

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基于变指数趋近律的永磁同步电机滑模控制 Title:SlidingModeControlofPermanentMagnetSynchronousMotorBasedonVariableExponentialApproach Abstract: Thispaperpresentsastudyontheslidingmodecontrolofpermanentmagnetsynchronousmotors(PMSM)usingavariableexponentialapproach.ThePMSMiswidelyusedinvariousindustrialapplicationsduetoitshighenergyefficiencyandexceptionaltorquedensity.However,thecontrolofPMSMsremainsachallengingtaskduetononlinearity,parameteruncertainties,anddisturbances.TheproposedcontrolstrategyaimstoovercomethesechallengesandenhancetheperformanceofPMSMs. Introduction: ThePMSMhasgainedsignificantpopularityduetoitsexcellentcharacteristics,suchashightorquedensity,highenergyefficiency,andimprovedpowerfactor.ThecontrolstrategyemployedinPMSMsplaysacrucialroleinachievingoptimalperformanceandefficientoperation.Slidingmodecontrol(SMC)hasbeenwidelystudiedandappliedindifferentindustrialsystemsduetoitsrobustnessagainstuncertaintiesanddisturbances. TheSMCtechniqueprovidesfastandaccuratecontrolbydrivingthesystemtrajectoryontoapredefinedslidingsurface.However,traditionalSMCapproachesoftensufferfromchatteringproblemsandrelyonthefixedvalueoftheexponentialreachinglaw,whichcanleadtosuboptimalcontrolperformance.Toovercometheselimitations,theproposedcontrolstrategyincorporatesavariableexponentialapproach. ControlDesign: Thevariableexponentialapproachisbasedontheconceptofadaptiveexponentialreachinglaw,whichadjuststheexponentialgainaccordingtothesystemdynamics.Thisapproachensuressmoothslidingsurfaceconvergencewithoutchatteringandenhancesthecontrolperformance. Thecontrolsystemconsistsoftwomaincomponents:theslidingsurfacedesignandthecontrollerdesign.Theslidingsurfaceisdesignedtoensurethestabilityandrobustnessofthecontrolsystem.Differentslidingsurfaces,suchastheerror-basedslidingsurfaceandtheintegralslidingsurface,canbeemployedbasedonthespecificrequirementsofthePMSMapplication. Thecontrollerdesignincorporatesthevariableexponentialreachinglawtoachievethedesiredcontrolperformance.Theexponentialgainisadaptivelyadj