车用微控制器的模糊逻辑与bdm部件-.研究与设计

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1、AbstractThewideapplicationofmicrocontrollerinautomotiveelectronicfieldmakesmodernautomotivetobemoreintelligentandnetworked．Researchesonmicrocontrolleranditsapplicationinautomotivestartedinthelate1970sinforeigncountries．Nowadaysmatureautomotivemicrocontrollerproductsandsolutio

2、nshavebeenformedabroad．However，thistechnologystartsquitelatelyinourcountryandthedevelopmentisprettyslow．Thereisrarelymatureproductsforwhichweowntheproprietaryintellectualpropertyrightsourselves．Sothetechnicalcraftworkersinourcountryareconfrontingachallengetoresearchanddevelop

3、automotivemicrocontrollerswithproprietaryintellectualpropertyrightsourselves．Withthecomplexityandinterferencediverisityoftheapplicationenvironmentwhereembeddedautomotiveelectroniccontrolsystemworks，fuzzylogicwithgoodadaptabilityhasbeenintroducedonthevehiclemicrocontrollerinst

4、ructions．FreescaleHCS12isthefirstmicrocontrollerinwhichfuzzylogicinstructionsarefullvsupported．Basedonanalysisofcharacteristicsandapplicationscenariosofautomotivemicrocontroller，theobjectiveofresearchistodesigntheENSL一16．aFreescaleHCS12instructionsetcompatible16一bitautomotive

5、microcontr011er．ThisthesisismainlyresponsiblefortheresearchanddesignofthefuzzylogicandBDMunitsoftheautomotivemicrocontroller，andtheanalysisofsystem’Ssecuritv．ThemainworkofthisthesisiSasfollows：Throughthestudyofcharacteristicsandtheautomotivemicrocontr011erinstructionset，thest

6、ructureofdatapathisproposed．Onthebasisof“Top—Down’’hierarchicaldesignmethod，thesystemmodulesaredividedandtheinterfacesignalsaredefined．ThenthesystemsecurityiSanalyzed．Basedonanalysisoffuzzylogicinstructionset，thethesisproposes16一bitunifieddatapathandstructureoftwofastcomputin

7、gunit．TheproposeddataDathandstructureoffastcomputingunit，canexecute8bit，16bit，unsignedandsignedoperationsoffuzzylogicinstructionsusingonecomputingmodule，whichavoidstherepetitionofcomputingmoduleanddecreasestheareaoffuzzylogicunit．Thestructureoftwofastcomputingunitcanrealizeth

8、eparallelcomputing，SOastoimprovethefuzzylogicinstructionexecutionspe