外文翻译 高铁日程安排系统的及时应用分析.docx
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外文翻译 高铁日程安排系统的及时应用分析.docx
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外文翻译高铁日程安排系统的及时应用分析
中文4385字,2917单词,16200英文字符
出处:
DuX,LiG,JiJ,etal.TheReal-timeApplicationAnalysisofHighs-peedTrainSchedulingSystem[J].InformationTechnologyJournal,2012,11(9):
1310.
外文翻译
学院:
管理学院
专业:
信息管理与信息系统
学号:
姓名:
InformationTechnologyJournal11(9):
1310-1315,2012
ISSN1812-5638/DOI:
10.39231itj.2012.1310.1315
2012AsianNetworkforScientificInformation
TheReal-timeApplicationAnalysisofHigh-speedTrainSchedulingSystem
XuedongDu,GuilinLi,JiangtaoJiandXiaomeiTan
CollegeofInformationScienceandEngineering,ShandongUniversityofScienceandTechnology,Qingdao,266510,China
StateKeyLaboratoryofRailTrafficControlandSafety,BeijingJiaotongUniversity,Beijing,100044,China
Abstract:
Basedontheschedulingproblemofthehigh-speedtrain,thisstudyintroducesareal-timeschedulingmodel.Combiningwiththedynamicbehaviorcontrollingoftrain,thefeedbackoftheoptimalspeedandthealgorithmoptimizationofthereal-timescheduling,thefeasibilityofthemodelisstudiedattheend,thisstudygivesthereal-timeapplicationanalysisofhigh-speedtrainschedulingsystem.
Keywords:
High-speedtrain,intelligentcontrolling,real-timescheduling,correctivefeedback,speedgoverning
INTRODUCTION
Inrecentyears,greatprogresshasbeenmadeinChineserailwayconstructionandthegrowingofhigh-speedtrainhaspushednewvigorintothenationaleconomy.However,thehigh-speedrailway7.23eventsandthehigh-speedmetrorear-endaccidentsinShanghairangthealarmbells-itisofgreatimportancetostudyhowtostrengthenthesafetyofhigh-speedtrainschedulingandthereal-timeresponse.
Heapingetal.(2004)putforwardtheproblemofthemultitargetsandobjectswhilecontrollingtherunningtrain,madeaseriesofresearchesontheintegrationofintelligentcontrol(Heapingetal.,2004;HuashenandJunfeng,2009)studiedsomekeytechnologies,suchasthecompatibilityoftrackcircuitsystemandtheinformationtransmissionofGSM-Rincontrollingsystemofhigh-speedtrain,thestationintervalandtheInterlockingandTrainControlsSystem(HuashenandJunfeng,2009);Inordertoimprovetherelativelystaticschedulingmodeloftrainoperation,(Zhouetal.,2011)establishedanintegrationmodelofstationandblocksection(Zhouetal,2011)Suchseriesofresearcheshaveanimportantinfluenceonthecontrollingsystemofthehigh-speedtrainscheduling.Buttheyneithergaveatotaldiscussionontheentireintegratedcontrollingsystemnormadethepractical,systematicandcomprehensiveanalysisonthereal-timeproblemoftheintelligentschedulingcontrolofhigh-speedtrain.
Inthisstudy,thereal-timeproblemofschedulingcontrolofthehigh-speedtrainisdiscussed.Combiningwiththeintelligentcontrollingandspeedgoverning,thispapergivesareal-timecontrollingsystemmodelofhigh-speedtrainschedulingthroughcontrollingthedynamicbehaviorandcorrectingthefeedbackoftheoptimalspeed.
THEOPTIMIZATIONNEEDSOFHIGH-SPEEDTRAIN
Themoreimprovementofthetrains'speed,thehigherrequirementsofintelligencehavebeenmadeforthereal-timecontrollingofhigh-speedtrainscheduling.
Establishingtherapidresponsemechanismofhigh-speedtrainscheduling:
Becauseoftheconstraintconditionsoftherailwaylines,thetimeintervalofthehigh-speedtrains'departureshrinks.Whilethepassingrateofthetrainincreasesrapidlyandithasbroughtunprecedentedchallengesforcontrollingofhigh-speedtrainschedulingAccordingtothetraditionalscheduling,thetrainoperationisunderthecontroldiagrammadebythecontrolcenter.Therefore,whenunpredictableconditionshappen,itisdifficulttochangethereal-timeschedulingcontrol,whiletherearealwaystheunpredictablerisksduringthehigh-speedtrainoperation.Howtotransfertheschedulinginformationandfeedbackaccuratelyinmicrosecondshasbecomethebottleneckonthesafetyofhigh-speedtrain.Toachievetheaimofreal-timecontrollingandquickschedulingofthebusyrailwaylines,thesafetymechanismofhigh-speedtrainmustbeimprovedandthecontrollingmechanismofthehigh-speedtrainmustbestrengthened.Buildingthereal-timeresponsemechanismofhigh-speedtrainisinurgentneed.
Strengtheningtheflexibilityoftheautomatedschedulingsystem:
Theschedulingmodelneedstobemoreflexibleforhigh-speedtrain,whilethepresentschedulingsystemneedstocoordinatetheroutelineandcalculatethewaitingtimeatthestationsofeachtrainsoastopreventtheconflictoftrainoperationintheexistingrailwaylines.Owingtotheshorterintervalsofeveryhigh-speedtrain,theremaybesomethingwrongwiththetrainoperationaslongastheschedulingsystemofhigh-speedtrainhasanydeviation,thus,itiscrucialtostrengthenthereal-timecharacterandflexibilityoftheintelligentschedulingofhigh-speedtrain.
Strengtheningintelligentcontrolofthetrainfurther:
Thehigh-speedtrainneedshigherrequirementsforthetrainsecurity.Thequickresponseofthecontrollingsystemandtheflexibilityoftheautomatedschedulingofhigh-speedtrainhavebecomethemainwayoftheintelligentdevelopmentofhigh-speedtrain.Throughtheconstructionoftheintelligentinformationsystem,enhancingthetrains'abilityofgettinginformationautomaticallyandstrengtheningtheintelligenceofreal-timescheduling,theaccidentsofthehigh-speedtraincanbeavoidedandthesafetymaintenanceofthehigh-speedtraincanbestrengthened.Allthesemeasurescanmakethehigh-speedtrainoperationmoreefficientandflexible.
Inconclusion,strengtheningintelligentcontrollingofthetrainisthekernelofthequickandflexibleschedulingofthehigh-speedtrain.Thebasisofenhancingtheintelligentcontrollingofhigh-speedtrainistoimprovethereal-timecharacterofhigh-speedtrain.Without,theefficientreal-timecontrolling,thesafetyperformanceofhigh-speedtraincan'tbefullyguaranteed.Therefore,theproblemsofreal-timecontrollingofhigh-speedtrainneedtobestudiedindepth.
THEREAL-TIMECONTROLLINGMODELOFHTGH-SPEEDTRATNSCHEDULTNC
Withthedevelopmentofmoderntechnology,theresearchesontheschedulingandcontrollingsystemofhigh-speedtrainarealsoimproving.Honggangetal.(2005)proposedamodelofhigh-speedtrainschedulingbasedonUMLandthismodelrealizedtheinformatizationoftheschedulingandcontrollingsystemefficiently(Honggangetal,2005).Yong-junandLei-shan(2008)solvedtheschedulingproblemoftheheavyrailwayofQinhuangdaothroughDecentralizedandAutonomousCTCSystemwhichgivesaguideofdevelopingtheintelligentschedulingofhigh-speedtrain(tong-junandLei-shan,2008).Zhouetal.(2011)setupthedynamicmodeloftrainoperation.Thesemodelshavegivencertainguidancetothetrainoperationandschedulingsystem,butmostoftheresearchesputweightonthesingletrainsystem,whichdidnotfocusontheproblemsofthereal-timeschedulingandintelligentcontrollingamongthehigh-speedtrains
Thebackgroundoftheproposedmodel:
Atpresent,themaximumspeedofChinesehigh-speedtrainhasbeenupto350kmperh.MoreovertheBeijing-Shanghaihigh-speedrailwayhasthemaximumspeedof380kmh-`.Theautomaticmonitoringsystem,automaticprotectionsystemandautomaticoperationsystemofhigh-speedtrainhavedevelopedrapidly.However,therestillneedstobeimprovedincoordinationaspects.Therefore,thesystemneedsacoordinatingsecuritymechanismwhichcanrealizetheintelligentcontrolofthetrainintervalandtrainspeed,getthepresentrunningspeedandthecurrentpositionofthetrainintimeandachievethereal-timecontrolinhigh-speedtrainoperation(AlhassanandBen-Edigbe,2011;XuedongandYin,2011;Xuedongetal.,2011).
Aimingattheexistingproblemsofhigh-speedtrain,thisstudygivesareal-timecontrollingmodelofhigh-speedtrainscheduling.Thismodelcombinestheschedulingsystemofthehigh-speedtrainwiththecontrollingsystem.Itpromotesthequickresponseofthehigh-speedtrainscheduling,improvestheintelligentcontrollingsystemandenhancesthereal-timecontrollingofhigh-speedtrain,thus,thesafetyperformanceofhigh-speedtrainisalsofurtherenhanced
Theframeworkofthemodel:
Combiningwiththetrainschedulingandintelligentcontrollingsystem,thissystemmodelmainlyincludesthegroundequipment,on-boardequipmentanddatatransmissionchannels.ThestructureofthesystemmodelisshowninFig.1and2.
Thegroundequipment:
ThegroundequipmentarecomposedofRovingBlockCenter,TrainControlCenter,transponderandinterfacedevicesofGSM-R.Thetranspondercantransmitlocatedinformation,parametersofrailwaylineandinformationoftemporaryspeedlimitstotheon-boardequipmentinordertomeettheneedsofback-upsystem;TrainControlCenterhasthefunctionoftrackcircuitcoding,transpondermessagestorageandtransferringcircuitstatusoftrackinterval.Accordingtotrackcircuitstatusandtheinformationoftemporaryspeedlimit,travelinglicenseofthetraincanbepermittedtoon-boardequipmentbythetrackcircuitandwirelessdevices(LoandKeh,2011;Fen-LintandDan,2012).
Inthismodel,thegroundcontrolcenterdoesn'tcalculatethespeedthattrainallowsbutthestatusofrailwayline,thelocationofrunningtrainandthespacebetweenthe
neighboringrunningtrainsintherailaretransferredtotrains.Accordingtothereceivedinformation,themaximumspeedcanbecalculatedbytheon-boardcomputerwhichisinchargeofcontrollingthespeedofthetrain.
Theon-boardequipment:
Theon-boardequipmentarecomposedoftheon-boardcomputer,wirelesscommunic
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