分布式驱动电动汽车AFS和DYC协调控制策略研究

分布式驱动电动汽车AFS和DYC协调控制策略研究摘要

随着人们对环境保护意识的不断提高，电动汽车被越来越广泛地应用。然而，电动汽车的安全性能和驾驶体验仍然需要提高。本文针对电动汽车的自适应前照灯系统（AFS）和动态稳定控制系统（DYC）进行研究，提出了一种分布式驱动电动汽车AFS和DYC协调控制策略。

首先，通过分析电动汽车的动力学模型和AFS控制原理，建立了分布式控制模型，使得AFS能够自适应调整前照灯照射范围并且反映动态路况。其次，通过研究电动汽车的离散控制模型和DYC控制原理，提出了一种基于模型预测控制的DYC协调控制策略。该策略采用了基于短期和长期预测的混合控制策略，有效地提高了电动汽车的稳定性和安全性。

最后，通过仿真实验对本文协调控制策略的有效性进行了验证。实验结果显示，该策略能够使AFS和DYC系统之间实现协同控制，同时保持较高的车速和良好的驾驶舒适性。这些结果为电动汽车的安全性能和驾驶体验的提升提供了一种新的思路。

关键词：电动汽车；自适应前照灯系统；动态稳定控制；协调控制

Abstract

Withtheincreasingawarenessofenvironmentalprotection,electricvehicleshavebeenwidelyused.However,thesafetyperformanceanddrivingexperienceofelectricvehiclesstillneedtobeimproved.ThispaperfocusesontheresearchoftheAdaptiveFront-lightingSystem(AFS)andDynamicStabilityControl(DYC)ofelectricvehicles,andproposesadistributeddrivingelectricvehicleAFSandDYCcoordinatedcontrolstrategy.

Firstly,byanalyzingthedynamicsmodelandAFScontrolprincipleofelectricvehicles,adistributedcontrolmodelwasestablished,sothatAFScouldadaptivelyadjusttheilluminationrangeofheadlightsandreflectthedynamicroadconditions.Secondly,basedonthestudyofthediscretecontrolmodelandDYCcontrolprincipleofelectricvehicles,amodelpredictivecontrol-basedDYCcoordinatedcontrolstrategywasproposed.Thestrategyadoptedamixedcontrolstrategybasedonshort-termandlong-termprediction,effectivelyimprovingthestabilityandsafetyofelectricvehicles.

Finally,thevalidityofthecoordinatedcontrolstrategyproposedinthispaperwasverifiedbysimulationexperiments.TheexperimentalresultsshowthatthestrategycanachievecoordinatedcontrolbetweentheAFSandDYCsystemswhilemaintaininghighspeedandgooddrivingcomfort.Theseresultsprovideanewapproachforimprovingthesafetyperformanceanddrivingexperienceofelectricvehicles.

Keywords:electricvehicle;adaptivefront-lightingsystem;dynamicstabilitycontrol;coordinatedcontroElectricvehicleshavegainedsignificantpopularityinrecentyearsduetotheirenvironmentalfriendlinessandlowoperatingcosts.However,thesafetyperformanceanddrivingexperienceofelectricvehicleshavealwaysbeenamajorconcernforconsumers.Inparticular,theadaptivefront-lightingsystem(AFS)anddynamicstabilitycontrol(DYC)areessentialsystemsthataffectthesafetyandcomfortofdriving.Therefore,coordinatedcontrolbetweentheAFSandDYCsystemsisverycriticalforelectricvehicles.

PreviousstudieshavemainlyfocusedontheindependentcontroloftheAFSandDYCsystems.However,thecouplingeffectbetweenthesetwosystemshasbeenignoredinpreviousstudies.ThispaperproposesacoordinatedcontrolstrategythatconsidersthecouplingeffectbetweentheAFSandDYCsystems,andinvestigatesitseffectivenessbysimulationexperiments.

Thecoordinatedcontrolstrategyproposedinthispaperutilizesahierarchicalcontrolframework.TheupperlevelofthecontrolframeworkisresponsibleforthecoordinationbetweentheAFSandDYCsystems,whilethelowerlevelisresponsiblefortheindependentcontrolofeachsystem.ThecoordinationbetweentheAFSandDYCsystemsisachievedbyintroducinganewcontrolvariable,whichconsidersthecouplingeffectbetweenthesetwosystems.

Thesimulationexperimentsconductedinthispaperdemonstratethattheproposedcoordinatedcontrolstrategycaneffectivelyimprovethesafetyperformanceanddrivingexperienceofelectricvehicles.Inparticular,theresultsshowthatthestrategycanachievecoordinatedcontrolbetweentheAFSandDYCsystems,whilemaintaininghighspeedandgooddrivingcomfort.Thisprovidesanewapproachforimprovingthesafetyperformanceanddrivingexperienceofelectricvehicles.

Inconclusion,thispaperproposesacoordinatedcontrolstrategythatconsidersthecouplingeffectbetweentheAFSandDYCsystems,andinvestigatesitseffectivenessbysimulationexperiments.Theexperimentalresultsdemonstratethattheproposedstrategycansignificantlyimprovethesafetyperformanceanddrivingexperienceofelectricvehicles.Therefore,thispaperprovidesavaluablecontributiontotheresearchonimprovingthesafetyperformanceanddrivingexperienceofelectricvehiclesInrecentyears,theusageofelectricvehicleshasbeenincreasingduetotheconcernsforenvironmentpollutionandenergyconservation.Asaresult,itisessentialtoensurethesafetyperformanceanddrivingexperienceofelectricvehiclestoenhancetheirmarketabilityandcustomersatisfaction.Onesignificantconcernforelectricvehiclesistheirstabilityduringcornering,whichcanbeaffectedbyfactorssuchasvelocity,steeringangle,androadsurfaceconditions.Hence,itisessentialtohaveamechanismthatcanimprovethestabilityofelectricvehiclesduringcornering.

Onepotentialmechanismforimprovingthestabilityofelectricvehiclesduringcorneringistheintegrationoftheactivefrontsteering(AFS)anddirectyawmomentcontrol(DYC)systems.TheAFSsystemcanhelpimprovethesteeringresponseoftheelectricvehicle,whiletheDYCsystemcanimprovethevehicle'sstabilitybygeneratingayawmomentinresponsetothesteeringangleandvehiclevelocity.

However,thecouplingeffectbetweentheAFSandDYCsystemscansignificantlyaffecttheperformanceofthevehicle.Thus,thispaperproposesacoordinatedcontrolstrategythatconsidersthecouplingeffectbetweentheAFSandDYCsystemstoenhancethesafetyperformanceanddrivingexperienceofelectricvehicles.

Theproposedstrategywastestedusingsimulationexperiments,andtheresultsdemonstratedsignificantimprovementsinthesafetyperformanceanddrivingexperienceofelectricvehicles.Specifically,thesimulationsshowedthattheproposedcontrolstrategycanimprovethevehicle'sstabilityduringcornering,leadingtoareductioninyawrateandlateralacceleration.Furthermore,thestrategycanimprovetheresponsivenessofthesteeringsystembyreducingthedelayinthesteeringresponse,whichcanleadtoabetterdrivingexperienceforthedriver.

Inconclusion,thispaperprovidesavaluablecontributiontotheresearchonimprovingthesafetyperformanceanddrivingexperienceofelectricvehicles.ThecoordinatedcontrolstrategyproposedinthispaperconsidersthecouplingeffectbetweentheAFSandDYCsystems,leadingtosignificantimprovementsinthesafetyperformanceanddrivingexperienceofelectricvehicles.FutureresearchcanfurtherinvestigatetheproposedcontrolstrategybyconductingmoreexperimentsondifferentelectricvehiclestoverifyitseffectivenessInadditiontotheproposedcoordinatedcontrolstrategy,thereareseveralotherareasofresearchthatcancontributetotheimprovementofthesafetyperformanceanddrivingexperienceofelectricvehicles.

Onesuchareaisthedevelopmentofadvanceddriverassistancesystems(ADAS)specificallydesignedforelectricvehicles.ADAScanincludefeaturessuchascollisionavoidance,lanedeparturewarnings,andautomatedparking,allofwhichcanhelpincreasethesafetyofelectricvehiclesontheroad.

Anotherareaofresearchisthedevelopmentofmoreefficientandreliablebatterytechnology.Improvementsinbatterytechnologycanleadtolongerdrivingrangesandfasterchargingtimes,makingelectricvehiclesmorepracticalandconvenientforeverydayuse.

Finally,researchcanalsofocusonimprovingtheoverallinfrastructureforelectricvehicles.Thiscanincludeincreasingthenumberofchargingstationsavailable,improvingthespeedandconvenienceofcharging,anddevelopingsmartergridtechnologiesthatcanoptimizetheuseofrenewableenergysources.

Overall,continuedresearchanddevelopmentintheseareascanhelpincreas