外文翻译---面向对象的液压系统分析研究.doc -- 5 元

1英文原版资料一摘至〈〈FluidPowerTransmissionAndControl〉〉（流体传动与控制）2004年第5期Thefacingtargethydraulicsystemanalysesandresearchesfirst,facingtargetanalysisbriefintroductioninthedevelopmentitemofthelargescalesoftware,nomatterrealtimecontrolsystem,databasesystem,artificialintelligencesystem,reachtheautomaticcodetoproducespecifically,orexpandtotheCIMSsofafactory,acommondemandexists,setupsystematicinformationmodelatnetworkanalysisstage.Innumeroussystematicanalyticalmethods,thetargetorientedanalysisOOAthemethodapproachesthehumanmodeofthinkingevenmore,beingusedbymoreandmorenetworkanalysispersonnelHoldtothepersonfacingtargetsviewandthink,thestructureofthecomputerprogramshouldkeepthesamewithnecessaryproblemsolved,butnotkeepunanimitywithacertainanalyticalmethod.Experienceindicates,astoanysoftwaresystem,amongthemthemoststeadycompositionisthecompositionsoftalkingaboutthelandPROBLEMDOMAINofthecorrespondingproblem.Itgoeswrongtobebecausequestiontalkaboutsomecompositionsoflandtoousuallysystematically.So,carryonabundantanalysisandunderstandaccuratelytothequestionitisimportantfoundationswithsteadysecuritysystemintermsoftheland.ThenwhatisthetargetonearthSaypopularly,thetargetmeanstheobjectiveentityintheworld,itcanknowsomethingsstorethedata,encapsulateservedobysomework,anditiswithtargetsotherincoordinationwithpassbynewsofexchanging,thusfinishmoduleallfunctionsofthesystem.WhyinterestedinthetargetAnswercanreplyofusingingsimple.Thoughfromthatcomputerproducethebeginning,wereplycodeofusingalready,facetargettechnologyallow,replyspendnotmerelythecode,thereareotheralotofthings.Throughfacingtargetstechnology,wecanreplybydemand,analysis,designing,testingplan,usersinterfaceandsystemstructure,etc..Facetargetanalyticalmethodbasedontarget,attribute,kindbelongtoandmember,wholeandsomethebasicconception.ThelargeGreatBritainsencyclopaediaispointedoutThemankindisgenerallyusingthreestructurerulesduringtheprocessofknowingandunderstandingtherealworldDistinguishtargetandhisattribute.Forexample,2distinguishthesizeofatreeandtreeorspacepositionrelation.Distinguishwholetargetandhiscomponent.Forexample,distinguishatreeandbranch.Forminganddifferentiationofdifferenttargets.Forexample,kindofalltreesandallstonesofforminganddifferentiationofkind.OOAisbasedondailyruleoftheabovethree.OOAmodeldescribedthatshowssometalkaboutthetargetintheland,andvariousstructuralrelationsandcommunicationrelationsparticularly.OOAmodelhastwouses.Firstofall,eachsoftwaresetupamongparticularrealworld,OOAmodeluseformalizationviewofrealworldthis.Itissetuptovarioustargets,saysseparatelytheinstitutionalframeworkwithmainsoftwaresystemandrealworldimposeonvariousrulesofthesoftwaresystemandrestraintheterms.Secondly,giveonegrouptargetdefinitely,OOAmodelstipulatehowaboutincoordinationwithcouldfinishsoftwaresystemdesignatedworkitwillbethey.Thiskind,incoordinationwithexpressinginthemodelbyindicatingagroupofnewsjoinscommunicationwaybetweenthetargets.OOAisbasedondailyruleoftheabovethree.OOAmodeldescribedthatshowssometalkaboutthetargetintheland,andvariousstructuralrelationsandcommunicationrelationsparticularly.OOAmodelhastwouses.Firstofall,eachsoftwaresetupamongparticularrealworld,OOAmodeluseformalizationviewofrealworldthis.Itissetuptovarioustargets,saysseparatelytheinstitutionalframeworkwithmainsoftwaresystemandrealworldimposeonvariousrulesofthesoftwaresystemandrestraintheterms.Secondly,giveonegrouptargetdefinitely,OOAmodelstipulatehowaboutincoordinationwithcouldfinishsoftwaresystemdesignatedworkitwillbethey.Thiskind,incoordinationwithexpressinginthemodelbyindicatingagroupofnewsjoinscommunicationwaybetweenthetargets.ThisliterarygraceisbyanalyticalmethodthatEdYourdonproposes,OOAmodelisdividedintofivelevels.ThiskindofhierarchicalstructureallowstocometotreatOOAmodelfromdifferentangles,and,thiskindofstructurebenefitsanddealswithbiggerOOAmodeleffectivelytoo.英文原版资料二摘至〈〈FluidPowerTransmissionAndControl〉〉（流体传动与控制）2004年第6期thetraditionalhydraulicpressureandcontrol3thehydraulicautomationequipmentandmakemoreandmorecomplicated,besidesgeneralcontrollingelectrically,andalsoincreasesportstocontrol,usershavealsoputforwardmorerequirements,thereshouldbeflexibleandchangeablecontrolprocedure,shouldnetworkthenetworksanddatabasestofactory,andalsoreducethefabricationcost,shortendevelopmenttime,evenwilladdthefunctionliveaftertheapparatussellsout,thesearenotmerelythechallengethatyoumeet,andthechallengefacedindevelopmentofthehydraulictechnologytoo.theautomatictechnologychangeswitheachpassingday,theautomatedsystemismoreandmorecomplicated,soonethatbringismoreandmoretoautomaticdemands,forinstanceservocylindersportsarecontrolled,becauseladdershapedpicture,flowdiagramsandorderpredicativespeechesfacethehardwareartificial,soreceiveverygreatrestrictionwhilefinishingthesenewfunctions,andincreasebyalotofexpenses.Inordertoremedythesedefects,traditionalPLCtransferssomefunctionstothemoduleorapparatuswithsingleotherthings,thenprogrammingcomesinanothersetoflanguages.Thishascausedalargeamountofsoftwareinterfaceanddatainterchange.Forexampleservosportsarecontrolledandallneedtoprogrammealone,increasethecomplexity,expensesandtimeofprogramming.Inordertomeettheautomaticnewdemand,developanddevelopandfacetheprogrammablecontrollerthatthesportcoursecontrolled,itistheautomatictechnologythatseeksthenewopportunity,offerthenewchoice.英文原版资料三摘至〈〈DEVELOPMENT＆INNOVATIONOFMACHINERY＆ELECTRICALPRODUCTS〉〉（机电产品开发与创新）2005年第一期Thelargescalecomponentcomputercontrolsthehydraulicpressuretopromoteinstep...Thehydraulicpressureoflargescalecomponentpromotestheconstructionmountingtechniquethattechnologyisanoveloneinstep.Itdifferentfromtraditionalpromotionmethod,adoptflexiblesteelcutwithscissorslineorrigiditypostbearing,risercluster,computeriscontrolled,thehydraulicpressurepromotesthenewprincipleinstep,combine4modernizedconstructionmethod,tonofcomponentsuntilgroundassembled,wholebringuptoandisbookedtohighlyinstallandtakeonesplace.Inthecourseofpromoting,notonlycancontrolmovementpostureandstressofthecomponentandisdistributed,canalsoletstructurepieceheldupinandalittleworkupandregulateinemptymidiumorlongterm,realizeinvertingconstructingandconcatenationinthesky,finishthemanpowerandexistingequipmentconstructiontaskdifficulttofinish,makethejackupinstallationofthelargescalecomponentsimpleandconvenientandswift,safeandreliable.Inourcountry,thistechnologybeginsfromtheendoftheeighties,applyShanghaistoneentrancetoacavesecondpowerplanttosuccessivelyandWaigaoqiaoBondedZonepowerplantthechimneyofthetubewasinvertedandconstructed,OrientalPearlBroadcastingandTVTowersteelaerialmastofShanghaiispromotedwholly,thesteelarchoveragateofroomofmainwebsiteofBeijingWestRailwayStationispromotedwholly,BeijingCapitalAirportfourseathangarnetworksetsofroofingpromoteandShanghaioldtheatersteelrooftrusspersonwhopromoteaseriesofgreatconstructionprojectswholly,haveobtainedtheimmensesuccess,hasmadetheprominenteconomicbenefitsandsocialbenefit.Projectpracticeproves,itisthatonehasgoodnewtechnologyofemployingtheprospect.ispromotedinthehydraulicpressureoflargescalecomponentinsystematiccontrolinstep,thecontrolalgorithmofthecomputercontrolsystemandcontrolstrategyarethekeytokeepingtheprecisionthatispromotedinstep.AdoptgeneralPIDtocontrolalgorithms,thestaticerrorisgreat,andtheerrorischangedbig,cantapplytoprojectreality.Thistextcombineprojectreality,recommendoneimprovedPIDcontrolalgorithmpairsofamplitudelimitingPIDcontrolalgorithms,itindicates,itisakindofeffectivealgorithmtotestandemploywiththeactualproject.