电动车基础设施 高级装备工程 ITUPS通信电源.docx

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

2.1.Fault → error → failurechain

2.2.Disciplinesrelatingtochallengetolerance

2.2.1.Faulttolerance

2.2.2.Survivability

2.2.3.Disruptiontolerance

2.2.4.Traffictolerance

2.3.Disciplinesrelatingtotrustworthiness

2.3.1.Dependability

2.3.2.Security

2.3.3.Performability

2.4.Robustnessandcomplexity

2.4.1.Robustness

2.4.2.Complexity

3.Challengesandpastfailures

3.1.Unusualbutlegitimatetrafficload

3.2.Accidentsandhumanmistakes

3.3.Large-scaledisasters

3.4.Maliciousattacks

3.5.Environmentalchallenges

3.6.Failuresatalowerlayer

3.7.Summaryofchallengesandpastfailures

4.ResiliNetsframeworkandstrategy

4.1.Previousstrategies

4.1.1.ANSA

4.1.2.T1

4.1.3.CMU-CERT

4.1.4.SUMOWIN

4.2.ResiliNets

4.3.ResiliNetsaxioms

4.4.ResiliNetsstrategy

4.4.1.Introduction

4.4.2.D2R2innerloop

4.4.3.DRouterloop

5.ResiliNetsdesignprinciples

5.1.Prerequisites

5.2.Designtradeoffs

5.3.Enablers

5.4.Behaviourneededforresilience

6.Resilienceanalysis

6.1.Statetransitionsandresilienceevaluation

6.2.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

3.1.Liquidpumpsformethanoldelivery

3.1.1.Microgearpumps

3.1.2.Diaphragmpumps

3.2.Airpumps

3.3.BOPcontrol

3.3.1.Fuelandwatercirculation

3.3.2.Airsupplyandtemperaturecontrol

4.Powerhybridizationsubsystem

4.1.Fuelcell-batteryhybridarchitectures

4.2.Voltageclampingandcurrentlimitation

4.3.Constant-currentoperation

5.Hardwaredesignandimplementation

5.1.DC–DCconvertersandbatterycharger

5.2.Measurementcircuit

5.3.Actuatordrivercircuits

5.4.Protectioncircuits

6.Softwarearchitectureanddesign

6.1.Microprocessor-basedBOPcontrol

6.2.Operatingsystemselection

6.3.Softwaredesign

7.Experimentalresults

7.1.Pumpcontrol

7.1.1.Cascadedfeedbackcontrol

7.1.2.Feedforwardcontrol

7.2.Constant-currentoperation

7.3.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®,Simulink®andSimPowerSystems®environments.

ArticleOutline

1.Introduction

2.Systemdescriptionandmethodology

2.1.ModelingofaPEMFC

2.2.ModelingofUCbank

2.3.Drivecycle

2.4.Wavelet-fuzzylogicbasedloadsharingandcontrolalgorithm

2.5.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

2.1.Exemplarypreventivemeasures

2.2.Exemplaryreactivemeasures

3.FourexemplaryautomotiveITsecuritythreatstodiscussattackpotential

3.1.ScenarioS1:

analysesontheelectricwindowlift

3.1.1.CERTclassification

3.1.2.Implicationstocomfort,securityandsafety

3.2.ScenarioS2:

analysesonthewarninglights

3.2.1.CERTclassification

3.2.2.Implicationstocomfort,securityandsafety

3.3.ScenarioS3:

analysesontheairbagcontrolsystem

3.3.1.CERTclassification

3.3.2.Implicationstocomfort,securityandsafety

3.4.ScenarioS4:

analysesonthegatewayECU