电动车基础设施 高级装备工程 ITUPS通信电源.docx
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电动车基础设施 高级装备工程 ITUPS通信电源.docx
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电动车基础设施高级装备工程ITUPS通信电源
Resilienceandsurvivabilityincommunicationnetworks:
Strategies,principles,andsurveyofdisciplines
ComputerNetworks
TheInternethasbecomeessentialtoallaspectsofmodernlife,andthustheconsequencesofnetworkdisruptionhavebecomeincreasinglysevere.ItiswidelyrecognisedthattheInternetisnotsufficientlyresilient,survivable,anddependable,andthatsignificantresearch,development,andengineeringisnecessarytoimprovethesituation.Thispaperprovidesanarchitecturalframeworkforresilienceandsurvivabilityincommunicationnetworksandprovidesasurveyofthedisciplinesthatresilienceencompasses,alongwithsignificantpastfailuresofthenetworkinfrastructure.Aresiliencestrategyispresentedtodefendagainst,detect,andremediatechallenges,asetofprinciplesfordesigningresilientnetworksispresented,andtechniquesaredescribedtoanalysenetworkresilience.
ArticleOutline
1.Introductionandmotivation
2.Resiliencedisciplines
.Fault→error→failurechain
.Disciplinesrelatingtochallengetolerance
2.2.1.Faulttolerance
2.2.2.Survivability
2.2.3.Disruptiontolerance
2.2.4.Traffictolerance
.Disciplinesrelatingtotrustworthiness
2.3.1.Dependability
2.3.2.Security
2.3.3.Performability
.Robustnessandcomplexity
2.4.1.Robustness
2.4.2.Complexity
3.Challengesandpastfailures
.Unusualbutlegitimatetrafficload
.Accidentsandhumanmistakes
.Large-scaledisasters
.Maliciousattacks
.Environmentalchallenges
.Failuresatalowerlayer
.Summaryofchallengesandpastfailures
4.ResiliNetsframeworkandstrategy
.Previousstrategies
4.1.1.ANSA
4.1.2.T1
4.1.3.CMU-CERT
4.1.4.SUMOWIN
.ResiliNets
.ResiliNetsaxioms
.ResiliNetsstrategy
4.4.1.Introduction
4.4.2.D2R2innerloop
4.4.3.DRouterloop
5.ResiliNetsdesignprinciples
.Prerequisites
.Designtradeoffs
.Enablers
.Behaviourneededforresilience
6.Resilienceanalysis
.Statetransitionsandresilienceevaluation
.Resilienceanalysisscenario
7.Summaryandresearchdirections
DevelopmentintheapplicationofICTinconditionmonitoringandmaintenance
ComputersinIndustry
Thispaperreviewstheavailableliteratureontheapplicationofinformationandcommunicationtechnologies(ICT),morespecifically,Webandagenttechnologiesinconditionmonitoring(CM)andthemaintenanceofmechanicalandelectricalsystems.Therarityofexpertsledtotheapplicationofartificialintelligenceand,later,distributedartificialintelligence.TheWebandagenttechnologyisthelatestdevelopmentinthisarea.Theliteraturefindingshavebeenanalysedandclassifiedinaframeworkwhichhighlightsthebaselinetechnology,theobjectiveofthetechnologyandtheindustryofapplication.TheOSA-CBM(OpenSystemArchitectureCondition-BasedMaintenance)layersarealsousedfortheanalysisofthereviewedwork.ThereviewshowsthatWebandagenttechnologiesarebeingusedformonitoringandmaintenanceinmanufacturing,power,andchemicalindustries.Itisusedtointegrategeographicallydistributedsystems,processesandheterogeneousdataforassetmanagement.Differentarchitectures,methodologiesandtoolsareproposedbytheresearchersforthedevelopmentofagentsystems.Fewfindingsreporttheuseofthemobiledevices.Finally,thereviewshowsthatlimitedconsistentandsystematiceffortshavebeenmade,inanisolatedmanner,toapplyICTtoCMandmaintenance.
ArticleOutline
1.Introduction
2.Theframework
3.Prognosticsanddecisionsupport
4.Conditionmonitoringanddiagnostics
5.Datamanipulationandhealthassessment
6.Dataacquisitionandconditionmonitoring
7.Healthassessmentandscheduling
8.ICTfordataacquisitionanddatatransfer
9.ICTforintegration
10.ICTforconflictinggoals
11.Otherfindings
12.Conclusions
Acknowledgements
References
Vitae
Systemintegrationofaportabledirectmethanolfuelcellandabatteryhybrid
InternationalJournalofHydrogenEnergy
Thispaperintroducesacompletesystem-leveldesignandintegrationofaportabledirectmethanolfuelcell(DMFC)system.Wedescribehardwareandsoftwaredesignforthebalanceofplant(BOP)control,includinga32-bitmicroprocessorandelectronicsforactuatorsandsensors,focusingonreliableoperationandprotectionoftheDMFCsystem.VariousBOPcomponentsarecharacterizedtofindtheoptimaldesignforbetterportability,reliability,andenergyefficiency,andwesuggesteffectiveandrobustdesignofcontrolloopsforthem.WedemonstrateahybridoperationoftheDMFCstackandLi-ionbatterytomaintainaconstantstackoutputcurrentregardlessoftheloadcurrenttomaximizetheperformance.Weemphasizethedesignofsubsystemsforpowersupply,measurement,actuatordrive,andprotectionindetail.WeverifytherobustoperationofBOPcontrolagainstenvironmentalchangessuchasorientationandpressurevariationswithanimplementedcontrolboard.
ArticleOutline
1.Introduction
2.PortableDMFCsystems
3.BOPcontrolsubsystem
.Liquidpumpsformethanoldelivery
3.1.1.Microgearpumps
3.1.2.Diaphragmpumps
.Airpumps
.BOPcontrol
3.3.1.Fuelandwatercirculation
3.3.2.Airsupplyandtemperaturecontrol
4.Powerhybridizationsubsystem
.Fuelcell-batteryhybridarchitectures
.Voltageclampingandcurrentlimitation
.Constant-currentoperation
5.Hardwaredesignandimplementation
.DC–DCconvertersandbatterycharger
.Measurementcircuit
.Actuatordrivercircuits
.Protectioncircuits
6.Softwarearchitectureanddesign
.Microprocessor-basedBOPcontrol
.Operatingsystemselection
.Softwaredesign
7.Experimentalresults
.Pumpcontrol
7.1.1.Cascadedfeedbackcontrol
7.1.2.Feedforwardcontrol
.Constant-currentoperation
.Long-termoperation
8.Conclusions
Acknowledgements
References
ModelingandanalysisofanFC/UChybridvehicularpowersystemusingawavelet-fuzzylogicbasedloadsharingandcontrolalgorithm
燃料电池全面监管系统及其控制算法和模糊逻辑负载及电能监测建模分析
Fuelcell(FC)systemsarepotentiallypromisingcandidatesasalternativeenergysourcesforuseinvehicularapplications.Thenaturaladvantagesofhybridpowersourcesmaybeeffectivelyutilizedtoimprovetheefficiencyanddynamicresponseofavehicularsystem.Fuelcell(FC)andultra-capacitor(UC)basedhybridpowersystemsappeartobeverypromisingforsatisfyinghighenergyandhighpowerrequirementsforvehicularapplications.Inthispaper,aFC/UChybridvehicularpowersystemusingawaveletbasedloadsharingandfuzzylogicbasedcontrolalgorithmisproposed.Whilewavelettransformsaresuitableforanalyzingandevaluatingthedynamicloaddemandprofileofahybridelectricvehicle(HEV),theuseoffuzzylogiccontrollerisappropriateforthehybridsystemcontrol.ThemathematicalandelectricalmodelsofthehybridvehicularsystemaredevelopedindetailandsimulatedusingMATLAB,SimulinkandSimPowerSystemsenvironments.
ArticleOutline
1.Introduction
2.Systemdescriptionandmethodology
.ModelingofaPEMFC
.ModelingofUCbank
.Drivecycle
.Wavelet-fuzzylogicbasedloadsharingandcontrolalgorithm
.Powerconditioningunit
3.Testandresults
4.Conclusions
Acknowledgements
References
SecuritythreatstoautomotiveCANnetworks—Practicalexamplesandselectedshort-termcountermeasures
ReliabilityEngineering&SystemSafety
CAN网络总线与IC设备运行安全
TheITsecurityofautomotivesystemsisanevolvingareaofresearch.Toanalysethecurrentsituationandthepotentiallygrowingtendencyofarisingthreatsweperformedseveralpracticaltestsonrecentautomotivetechnology.WithafocusonautomotivesystemsbasedonCANbustechnology,thisarticlesummarisestheresultsoffourselectedtestsperformedonthecontrolsystemsforthewindowlift,warninglightandairbagcontrolsystemaswellasthecentralgateway.TheseresultsaresupplementedinthisarticlebyaclassificationofthesefourattackscenariosusingtheestablishedCERTtaxonomyandananalysisofunderlyingsecurityvulnerabilities,andespecially,potentialsafetyimplications.
Withrespecttotheresultsofthesetests,inthisarticlewefurtherdiscusstwoselectedcountermeasurestoaddressbasicweaknessesexploitedinourtests.Theseareadaptationsofintrusiondetection(discussingthreeexemplarydetectionpatterns)andIT-forensicmeasures(proposingproactivemeasuresbasedonaforensicmodel).Thisarticlediscussesbothlookingatthefourattackscenariosintroducedbefore,coveringtheircapabilitiesandrestrictions.Whilethesereactiveapproachesareshort-termmeasures,whichcouldalreadybeaddedtotoday’sautomotiveITarchitecture,long-termconceptsalsoareshortlyintroduced,whicharemainlypreventivebutwillrequireamajorredesign.Beneathashortoverviewonrespectiveresearchapproaches,wediscusstheirindividualrequirements,potentialandrestrictions.
ArticleOutline
1.Introductionandmotivation
2.State-of-the-art
.Exemplarypreventivemeasures
.Exemplaryreactivemeasures
3.FourexemplaryautomotiveITsecuritythreatstodiscussattackpotential
.ScenarioS1:
analysesontheelectricwindowlift
3.1.1.CERTclassification
3.1.2.Implicationstocomfort,securityandsafety
.ScenarioS2:
analysesonthewarninglights
3.2.1.CERTclassification
3.2.2.Implicationstocomfort,securityandsafety
.ScenarioS3:
analysesontheairbagcontrolsystem
3.3.1.CERTclassification
3.3.2.Implicationstocomfort,securityandsafety
.ScenarioS4:
analysesonthegatewayECU
3.4.1.CERTclassification
3.4.2.Implicationstocomfort,securityandsafety
.Safetyandsecurityimplications—summaryandanalysisofunderlyingproblemsinsce
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