资源描述：
《A Fuzzy-Logic Controller for an Electrically DrivenSteering System for a Motorcar》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、KSMEInternationalJournal,Vol.16No.8,pp.1039--1052,20021039AFuzzy-LogicControllerforanElectricallyDrivenSteeringSystemforaMotorcarSang-HeonLeeCentreforAdvancedManufacturingResearch,UniversityofSouthAustralia,MawsonLakes,SA,AustraliaII-SooKim*DepartmentofMechanicalEngineering,MokpoNationalUniver
2、sity,Muan-Gun,Chonnam534-729,KoreaJayanthaKatupitiyaSchoolofMech.&Manf.Eng.UniversityofNewSouthWales,Sydney,NSW,AustraliaThispaperpresentsanapplicationwhereaFuzzy-LogicController(FLC)isusedatasupervisoryleveltoimplementmutualcoordinationofthesteeringofthetwofrontwheelsofamotorcar.Thetwofrontwh
3、eelsaresteeredbytwoindependentdiscretetimestatefeedbackcontrollerswithaviewtooptimizethesteeringslipangles.ThefunctionsofthetwocontrollersaretiedtogetherbywayofaFLC.Becauseofthepresenceofunmodelleddynamicsanddisturbancesactingonthetwosides,itisdifficulttoachievethedesiredperformanceusingconven
4、tionalcontrolsystems.ThisistheprimaryreasonthatFLCisemplogedtosolvetheproblem.Theresultsshowthattheimplementedsystemachieveddesiredcouplingbetweenthetwoindependentsystemsandtherebyreducesthedifferencebetweenthetwosteeredangles.KeyWords:FLC(Fuzzy-LogicController),FeedbackController,PWM(PulseWid
5、thModulation),MATLABSystem,PID(ProportionalIntegralDifferential)andMamdani,1977),cementkiln(Umbersand1.IntroductionKing,1980)tomoredemandingcontrolapplica-tionssuchasautomobilespeedcontrol(Mura-SincetheintroductionofmathematicalwayskamiandMaeda,1985),aircraftflightcontroltorepresentvaguenessin
6、everydaylife(Zadeh,(Larkin,1985),anti-lockbrakesystems(Madau1965),therehavebeenfurtherdevelopmentinetal.,1993)andhydraulicpositionservos(Zhaofuzzyalgorithms(Zadeh,1968)andlinguisticandVirvalo,1993).Morerecently,aFuzzy-analysis(Zadeh,1973)whichmotivatedtheearlyLogicController(FLC)hasbeenusedina
7、nlaboratoryapplicationoffuzzy-logicintocontrolinnovativemannerinanautomatictrainopera-engineering(Mamdani;1974,MamdaniandAssi-tionwithpredictivefuzzycontrol(Yasunobuandlian,1975;Tongetal.,1980).Sincethen,fuzzyMiyamoto,1985),inhelicopter
