基于建模的方法评价实时嵌入式控制系统的性能毕业论文外文文献翻译.docx
- 文档编号:3165004
- 上传时间:2022-11-18
- 格式:DOCX
- 页数:48
- 大小:436.30KB
基于建模的方法评价实时嵌入式控制系统的性能毕业论文外文文献翻译.docx
《基于建模的方法评价实时嵌入式控制系统的性能毕业论文外文文献翻译.docx》由会员分享,可在线阅读,更多相关《基于建模的方法评价实时嵌入式控制系统的性能毕业论文外文文献翻译.docx(48页珍藏版)》请在冰豆网上搜索。
基于建模的方法评价实时嵌入式控制系统的性能毕业论文外文文献翻译
英文资料翻译
Amodeling-basedmethodologyforevaluatingtheperformanceofareal-timeembeddedcontrolsystem
KlemenPerko,RemyKocik,RedhaHamouche,AndrejTrost
ABSTRACT
Thispaperpresentsamodelling-basedmethodologyforembeddedcontrolsystem(ECS)design.Here,insteadofdevelopinganewmethodologyforECSdesign,weproposetoupgradeanexistingonebybridgingitwithamethodologyusedinotherareasofembeddedsystemsdesign.Wecreatedatransformationbridgebetweenthecontrol-schedulingandthehardware/software(HW/SW)co-designtools.Bydefiningthisbridge,weallowforanautomaticmodeltransformation.Asaresult,weobtainmoreaccuratetiming-behavioursimulations,consideringnotonlythereal-timesoftware,butalsothehardwarearchitecture’simpactonthecontrolperformance.Weshowanexamplewithdifferentmodel-evaluationresultscomparedtorealimplementationmeasurements,whichclearlydemonstratesthebenefitsofourapproach.
©2011ElsevierB.V.Allrightsreserved
KEYWORDS:
Modeling,Modeltransformations,Embeddedcontrolsystemsdesign,Real-timesystems
1.Introduction
Embeddedcontrolsystems(ECSs)areubiquitousnowadays.Theyareusedinabroadspectrumofapplications,fromsimpletemperaturecontrolinhouseholdappliancestocomplexandsafety–criticalautomotivebrakesystemsoraircraftflightcontrolsystems.Differentapplicationshavedifferentdemandswithregardstothereal-timeexecution,controlperformance,energyconsumption,price,etc.,oftheECSbeingused.Moderntechnologiesforhardware(HW)andsoftware(SW)designprovideavarietyofpossibilitiesfordesigningECSs(e.g.,distributedandnetworkedHW,multi-processorsystems,avarietyofSWcontrolalgorithmsandreal-timeoperatingsystems(RTOSs),etc.)[1].ItiscommonlyacknowledgedthatthedesigningandverifyingofreliableandefficientECSsforaparticularapplicationarechallengingtasks.
1.1.Traditionalcontrol-systemdesign
TheaimofdesigninganECSistobuildacomputingsystemthatisabletocontrolthebehaviorofaphysicalsystem,e.g.,aplant.Suchaplantismadeupofinterconnectedmechanical,electricaland/orchemicalelements.AtypicalECSconsistsofelectronicsensorsfordataacquisitionfromtheplant,acomputingsystemforprocessingthecontrolalgorithm,andelectronicactuatorstodrivetheplant.
TheECSdesignprocessinvolvesdifferentactorsandareasofexpertise(controltheory,signalprocessing,real-timeSWandHWengineers).Eachoftheseengineersisfamiliarwiththeirownmodelinglanguages,models,designtools,etc.Thisheterogeneityintroducescutsinthedesignprocess.Modeltransformationsareneededbetweeneachdesignstep;however,theyareoftencarriedoutmanuallyand,asaresult,arepronetomistakesandsubjecttointerpretation,whichofcoursedependsontheskillofthedesigner.ThetraditionalformofECSdesignisperformedintwoseparateddomains–thecontrolSWdomainandtheHWdomain–usingspecificdesigntoolsandtheirrespectivesystemmodels.Inthefirstdomain,controlengineersdefinethecontrollawsandtheSWengineerswritethecodethatexecutestheoperationsrequiredbythecontrollaws.Aso-calledcontrol-schedulingco-designisperformed.Decisionsmadeinthereal-time(RT)softwaredesignaffectthecontroldesign,andviceversa.Forinstance,differentSWschedulingpolicieshavedifferentimpactsonthelatencydistributionsinthecontrolloopsand,consequently,ontheirperformance.Also,thecontrol-loopperformancedirectlyaffects(byconstraining)theSWexecutionparameters(i.e.,samplingperiods,task-executionjitter,etc.).
IntheseconddomaintheHWengineersdesignanHWplatformthatwillexecutethecontrolSW.Theconnectionsofallthesensorsandactuatorstotheplatformaremadeviatheavailablecommunicationchannels.However,becausetheHWplatformisdesignedseparately,controlengineerscannotestimateitsimpactonthecontrol-loopperformance.Forinstance,thedatafromsensorsandtoactuatorscanpassthroughoneormorecommunicationchannels.AHWengineercan,ingeneral,choosefromamongavarietyofcommunicationprotocols,andeachtypeintroducesdifferentlatenciesandjitter,whichthereforeaffectstheSWexecution.Thecontrolengineercannot,however,evaluatetheeffectoftheselatenciesbeforethesystemisactuallyimplemented.Hence,thedesiredperformanceofthesystemmaynotbeachieved,anditisnecessarytochangeandtunethecontrollaws(calibrationphase)inordertocompensatefortheimpactofthesecommunicationandexecutiondelays.Thefactthatthecalibrationhastobeperformedonanactualplantcanbeveryexpensiveandtime-consuming,especiallywhenthedesiredperformancecannotbeachievedusingthecurrentHWplatformandaredesignisrequired.
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 基于 建模 方法 评价 实时 嵌入式 控制系统 性能 毕业论文 外文 文献 翻译