轨道交通车辆牵引电机无位置-速度传感器控制关键技术研究

轨道交通车辆牵引电机无位置-速度传感器控制关键技术研究摘要：随着城市的发展和人口的增加，轨道交通作为城市中重要的交通工具，得到了越来越多的关注。其中，轨道交通车辆牵引电机作为车辆运行的核心部件之一，其性能的优劣直接影响着轨道交通的安全性、速度、能耗等关键指标。然而，传统的轨道交通车辆牵引电机控制系统中，常常需要配备位置/速度传感器，从而增加了系统的复杂度和成本。因此，研究一种无位置/速度传感器控制方案，具有实际的应用价值和研究意义。

本文首先介绍了轨道交通车辆牵引电机系统的组成和传统控制方案的不足之处，随后提出了一种基于滑模变结构控制的无位置/速度传感器控制方案。该方案主要采用扩张状态观测器技术，通过模拟测量信号，减小了传感器数量，降低了系统的复杂度和成本，并且在滑模控制器的作用下，在不需位置/速度传感器的条件下，实现了轨道交通车辆牵引电机的高效、稳定控制。最后，通过仿真和实验验证了该控制方案的有效性和实用性。

关键词：轨道交通；车辆牵引电机；无位置/速度传感器；滑模变结构控制；扩张状态观测器；仿真；实验。

Abstract:Withthedevelopmentofcitiesandtheincreaseofpopulation,railtransithasattractedmoreandmoreattentionasanimportanttoolforurbantransportation.Amongthem,thetractionmotorofrailtransitvehicles,asoneofthecorecomponentsofvehicleoperation,directlyaffectsthekeyindicatorssuchassafety,speed,andenergyconsumptionofrailtransit.However,inthetraditionalcontrolsystemofrailtransitvehicletractionmotor,itoftenrequiresposition/velocitysensors,whichincreasesthecomplexityandcostofthesystem.Therefore,researchingasensorlesscontrolschemehaspracticalapplicationvalueandresearchsignificance.

Inthispaper,thecompositionoftherailwayvehicletractionmotorsystemandtheshortcomingsofthetraditionalcontrolschemeareintroducedfirstly,andthenasensorlesscontrolschemebasedonslidingmodevariablestructurecontrolisproposed.Thisschememainlyusestheextendedstateobservertechnologytosimulatethemeasurementsignals,reducethenumberofsensors,reducethecomplexityandcostofthesystem,andundertheactionoftheslidingmodecontroller,theefficientandstablecontroloftherailwayvehicletractionmotorisachievedwithouttheneedforposition/velocitysensors.Finally,theeffectivenessandpracticalityofthecontrolschemeareverifiedthroughsimulationandexperimentation.

Keywords:Railtransit;Vehicletractionmotor;Sensorless;Slidingmodevariablestructurecontrol;Extendedstateobserver;Simulation;ExperimentRailtransitisanessentialmodeoftransportationformanycitiesaroundtheworld.Inarailwayvehicle,thetractionmotorplaysacrucialroleindrivingthetrain.Theprecisecontrolofatractionmotoriscrucialtoensuretheefficiency,stability,andsafetyofthesystem.Traditionally,thecontrolofthetractionmotorinrailtransitinvolvestheuseofpositionandvelocitysensors.However,thesesensorscanbeexpensive,andtheirinstallationandmaintenancecanaddcomplexitytothesystem.

Toovercomethesechallenges,recentresearchhasfocusedondevelopingsensorlesscontrolschemesforrailwayvehicletractionmotors.Inthisapproach,thecontrolalgorithmdoesnotrelyonthefeedbackfrompositionandvelocitysensors.Instead,itusesothermeasurements,suchascurrentandvoltage,toestimatethepositionandvelocityofthemotor.

Onesuccessfulapproachistheslidingmodevariablestructurecontrol(SMVSC)combinedwithanextendedstateobserver(ESO).SMVSCisarobustandefficientcontrolstrategythatisinsensitivetosystemdisturbancesanduncertainties.ESOisastateestimatorthatcanestimatethestatesofthesystem,includingthepositionandvelocity,evenwithoutdirectmeasurements.Bycombiningbothtechniques,theSMVSC-ESOcontrolschemecanachievepreciseandstablecontrolofthetractionmotorwithoutrelyingonposition/velocitysensors.

TheeffectivenessandpracticalityoftheSMVSC-ESOcontrolschemeisillustratedthroughsimulationsandexperiments.Thesimulationsshowthattheschemecanachieveefficientandstablecontrolofthetractionmotorundervariousoperatingconditions,includingsuddenloadchangesandsystemdisturbances.TheexperimentsconductedonarealrailwayvehiclevalidatetheresultsobtainedfromsimulationsanddemonstratetheeffectivenessofSMVSC-ESOcontrolschemeinpracticalapplications.

Inconclusion,theSMVSC-ESOcontrolschemeisapromisingapproachforachievingefficientandstablecontrolofrailwayvehicletractionmotorswithouttheneedforposition/velocitysensors.ThisapproachcanreducethecomplexityandcostofthesystemwhilemaintaininghighlevelsofperformanceandsafetyOnepotentiallimitationoftheSMVSC-ESOcontrolschemeisthatitreliesonaccuratemodelingofthesystemdynamics.Iftherearesignificantdeviationsfromtheassumptionsmadeinthemodel,thecontrolperformancemaybecompromised.Therefore,itisimportanttoensurethatthemodelaccuratelyrepresentsthereal-worldsystemandtocontinuouslyupdateitasnecessary.

Anotherchallengeisthatthecontrolperformancemaybeaffectedbyexternaldisturbancessuchaschangesinwind,temperature,ortrackconditions.Toaddressthis,itmaybenecessarytoincorporateadditionalsensorsorfeedbackmechanismstocompensateforthesedisturbances.Furthermore,thecontrolschememayneedtobeadaptedfordifferenttypesofrailwayvehiclesandoperatingconditions.

Overall,thedevelopmentofadvancedcontrolschemessuchasSMVSC-ESOrepresentsanimportantsteptowardsimprovingtheefficiency,safety,andsustainabilityofrailwaytransportation.Byreducingtherelianceonsensorsandincreasingtheaccuracyofthecontrolalgorithms,theseapproachescanhelptoenhancetheperformanceofrailwayvehiclesandreducetheirenvironmentalimpact.Assuch,theyarelikelytoplayanincreasinglyimportantroleinthefutureofrailwaytransportationOneofthemainbenefitsofadvancedcontrolschemesinrailwaytransportationistheirabilitytoimprovesafety.Railwayaccidentscanhavecatastrophicconsequences,notjustintermsoflossoflifeandinjury,butalsointheeconomicandsocialimpactsthattheycanhave.AdvancedcontrolschemessuchasSMVSC-ESOcanhelptominimizetheriskofaccidentsbyprovidingmorepreciseandaccuratecontrolovertherailwayvehicle.Thiscanhelptoreducethelikelihoodofderailment,collisions,andothertypesofaccidents.

Inadditiontoimprovingsafety,advancedcontrolschemescanalsohelptoincreasetheefficiencyofrailwaytransportation.Thiscancomeinanumberofforms,suchasreducingenergyconsumption,optimizingtrainschedules,andimprovingthecapacityoftherailwaynetwork.Byreducingenergyconsumption,forexample,railwayscanreducetheircarbonemissionsandcontributetotheglobalefforttomitigateclimatechange.Improvingcapacitycanalsohelptoreducecongestionandimprovetheoverallperformanceoftherailwaysystem.

Oneofthechallengesofadvancedcontrolschemesisthattheycanbecomplexandrequiresophisticatedalgorithmsandsoftware.Inordertodevelopandimplementtheseschemes,itisnecessarytohaveskilledengineersandtechnicianswhoarefamiliarwiththelatesttechnologiesandhaveexperienceindesigningandtestingcontrolsystems.Inaddition,thecostsofimplementingthesesystemscanbehigh,whichmaylimittheiruseinsomepartsoftheworld.

However,despitethesechallenges,thebenefitsofadvancedcontrolschemesarebecomingincreasinglyclear,andthetechnologyislikelytoplayagrowingroleinthefutureofrailwaytransportation.Astheglobaldemandforefficient,safe,ands