簡(jiǎn)介：DOI101007/S0017000423279ORIGINALARTICLEINTJADVMANUFTECHNOL20062853–60HUAMINZHOUDEQUNLIINTEGRATEDSIMULATIONOFTHEINJECTIONMOLDINGPROCESSWITHSTEREOLITHOGRAPHYMOLDSRECEIVED5MARCH2004/ACCEPTED5JULY2004/PUBLISHEDONLINE6APRIL2005?SPRINGERVERLAGLONDONLIMITED2005ABSTRACTFUNCTIONALPARTSARENEEDEDFORDESIGNVERIFICATIONTESTING,FIELDTRIALS,CUSTOMEREVALUATION,ANDPRODUCTIONPLANNINGBYELIMINATINGMULTIPLESTEPS,THECREATIONOFTHEINJECTIONMOLDDIRECTLYBYARAPIDPROTOTYPINGRPPROCESSHOLDSTHEBESTPROMISEOFREDUCINGTHETIMEANDCOSTNEEDEDTOMOLDLOWVOLUMEQUANTITIESOFPARTSTHEPOTENTIALOFTHISINTEGRATIONOFINJECTIONMOLDINGWITHRPHASBEENDEMONSTRATEDMANYTIMESWHATISMISSINGISTHEFUNDAMENTALUNDERSTANDINGOFHOWTHEMODIFICATIONSTOTHEMOLDMATERIALANDRPMANUFACTURINGPROCESSIMPACTBOTHTHEMOLDDESIGNANDTHEINJECTIONMOLDINGPROCESSINADDITION,NUMERICALSIMULATIONTECHNIQUESHAVENOWBECOMEHELPFULTOOLSOFMOLDDESIGNERSANDPROCESSENGINEERSFORTRADITIONALINJECTIONMOLDINGBUTALLCURRENTSIMULATIONPACKAGESFORCONVENTIONALINJECTIONMOLDINGARENOLONGERAPPLICABLETOTHISNEWTYPEOFINJECTIONMOLDS,MAINLYBECAUSETHEPROPERTYOFTHEMOLDMATERIALCHANGESGREATLYINTHISPAPER,ANINTEGRATEDAPPROACHTOACCOMPLISHANUMERICALSIMULATIONOFINJECTIONMOLDINGINTORAPIDPROTOTYPEDMOLDSISESTABLISHEDANDACORRESPONDINGSIMULATIONSYSTEMISDEVELOPEDCOMPARISONSWITHEXPERIMENTALRESULTSAREEMPLOYEDFORVERIFICATION,WHICHSHOWTHATTHEPRESENTSCHEMEISWELLSUITEDTOHANDLERPFABRICATEDSTEREOLITHOGRAPHYSLMOLDSKEYWORDSINJECTIONMOLDINGNUMERICALSIMULATIONRAPIDPROTOTYPING1INTRODUCTIONININJECTIONMOLDING,THEPOLYMERMELTATHIGHTEMPERATUREISINJECTEDINTOTHEMOLDUNDERHIGHPRESSURE1THUS,THEMOLDMATERIALNEEDSTOHAVETHERMALANDMECHANICALPROPERTIESCAPABLEOFWITHSTANDINGTHETEMPERATURESANDPRESSURESOFTHEMOLDINGCYCLETHEFOCUSOFMANYSTUDIESHASBEENTOCREATETHEHZHOUUDLISTATEKEYLABOFMOLDU,VARETHEAVERAGEWHOLEGAPTHICKNESSESANDΗ,Ρ,CPT,KTREPRESENTVISCOSITY,DENSITY,SPECIFICHEATANDTHERMALCONDUCTIVITYOFPOLYMERMELT,RESPECTIVELYINADDITION,BOUNDARYCONDITIONSINTHEGAPWISEDIRECTIONCANBEDEFINEDASUWV0,TTWATZB5?U?Z0?V?Z,?T?Z0,W0ATZ06WHERETWISTHECONSTANTWALLTEMPERATURESHOWNINFIG2ACOMBININGEQS1–4WITHEQS5–6,ITFOLLOWSTHATTHEDISTRIBUTIONSOFTHEU,V,T,PATZCOORDINATESSHOULDBESYMMETRICAL,WITHTHEMIRRORAXISBEINGZ0,ANDCONSEQUENTLYTHEU,VAVERAGEDINHALFGAPTHICKNESSISEQUALTOTHATAVERAGEDINWHOLEGAPTHICKNESSBASEDONTHISCHARACTERISTIC,WECANDIVIDETHEWHOLECAVITYINTOTWOEQUALPARTSINTHEGAPWISEDIRECTION,ASDESCRIBEDBYPARTIANDPARTIIINFIG2BATTHESAMETIME,TRIANGULARFINITEELEMENTSAREGENERATEDINTHESURFACESOFTHECAVITYATZ0INFIG2B,INSTEADOFTHEMIDDLEPLANEATZ0INFIG2AACCORDINGLY,FINITEDIFFERENCEINCREMENTSINTHEGAPWISEDIRECTIONAREEMPLOYEDONLYINTHEINSIDEOFTHESURFACESWALLTOMIDDLE/CENTERLINE,WHICH,INFIG2B,MEANSFROMZ0TOZBTHISISSINGLESIDEDINSTEADOFTWOSIDEDWITHRESPECTTOTHEMIDDLEPLANEIEFROMTHEMIDDLELINETOTWOWALLSINADDITION,THECOORDINATESYSTEMISCHANGEDFROMFIG2ATOFIG2BTOALTERTHEFINITEELEMENT/FINITEDIFFERENCESCHEME,ASSHOWNINFIG2BWITHTHEABOVEADJUSTMENT,GOVERNINGEQUATIONSARESTILLEQS1–4HOWEVER,THEORIGINALBOUNDARYCONDITIONSINTHEGAPWISEDIRECTIONAREREWRITTENASUWV0,TTWATZ07?U?Z0?V?Z,?T?Z0,W0ATZB8MEANWHILE,ADDITIONALBOUNDARYCONDITIONSMUSTBEEMPLOYEDATZBINORDERTOKEEPTHEFLOWSATTHEJUNCTUREOFTHETWOPARTSATTHESAMESECTIONCOORDINATE7UIUIIVIVIITITIIPIPIIATZB9CM?ICM?II10WHERESUBSCRIPTSI,IIREPRESENTTHEPARAMETERSOFPARTIANDPARTII,RESPECTIVELY,ANDCMIANDCMIIINDICATETHEMOVINGFREEFIG2A,BILLUSTRATIVEOFBOUNDARYCONDITIONSINTHEGAPWISEDIRECTIONAOFTHEMIDDLEPLANEMODELBOFTHESURFACEMODELMELTFRONTSOFTHESURFACESOFTHEDIVIDEDTWOPARTSINTHEFILLINGSTAGEITSHOULDBENOTEDTHAT,UNLIKECONDITIONSEQS7AND8,ENSURINGCONDITIONSEQS9AND10AREUPHELDINNUMERICALIMPLEMENTATIONSBECOMESMOREDIFFICULTDUETOTHEFOLLOWINGREASONS1THESURFACESATTHESAMESECTIONHAVEBEENMESHEDRESPECTIVELY,WHICHLEADSTOADISTINCTIVEPATTERNOFFINITEELEMENTSATTHESAMESECTIONTHUS,ANINTERPOLATIONOPERATIONSHOULDBEEMPLOYEDFORU,V,T,PDURINGTHECOMPARISONBETWEENTHETWOPARTSATTHEJUNCTURE2BECAUSETHETWOPARTSHAVERESPECTIVEFLOWFIELDSWITHRESPECTTOTHENODESATPOINTAANDPOINTCASSHOWNINFIG2BATTHESAMESECTION,ITISPOSSIBLETOHAVEEITHERBOTHFILLEDORONEFILLEDANDONEEMPTYTHESETWOCASESSHOULDBEHANDLEDSEPARATELY,AVERAGINGTHEOPERATIONFORTHEFORMER,WHEREASASSIGNINGOPERATIONFORTHELATTER3ITFOLLOWSTHATASMALLDIFFERENCEBETWEENTHEMELTFRONTSISPERMISSIBLETHATALLOWANCECANBEIMPLEMENTEDBYTIMEALLOWANCECONTROLORPREFERABLELOCATIONALLOWANCECONTROLOFTHEMELTFRONTNODES4THEBOUNDARIESOFTHEFLOWFIELDEXPANDBYEACHMELTFRONTADVANCEMENT,SOITISNECESSARYTOCHECKTHECONDITIONEQ10AFTEREACHCHANGEINTHEMELTFRONT5INVIEWOFABOVEMENTIONEDANALYSIS,THEPHYSICALPARAMETERSATTHENODESOFTHESAMESECTIONSHOULDBECOMPAREDANDADJUSTED,SOTHEINFORMATIONDESCRIBINGFINITEELEMENTSOFTHESAMESECTIONSHOULDBEPREPAREDBEFORESIMULATION,THATIS,THEMATCHINGOPERATIONAMONGTHEELEMENTSSHOULDBEPREFORMED222NUMERICALIMPLEMENTATIONPRESSUREFIELDINMODELINGVISCOSITYΗ,WHICHISAFUNCTIONOFSHEARRATE,TEMPERATUREANDPRESSUREOFMELT,THESHEARTHINNINGBEHAVIORCANBEWELLREPRESENTEDBYACROSSTYPEMODELSUCHASΗ˙Γ,T,PΗ0T,P1?Η0˙Γ?Τ??1?N11WHERENCORRESPONDSTOTHEPOWERLAWINDEX,ANDΤ?CHARACTERIZESTHESHEARSTRESSLEVELOFTHETRANSITIONREGIONBETWEENTHENEWTONIANANDPOWERLAWASYMPTOTICLIMITSINTERMSOF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簡(jiǎn)介：河南科技大學(xué)畢業(yè)設(shè)計(jì)1外文資料PERFORMANCEOFICESTORAGESYSTEMUTILIZINGACOMBINEDPARTIALANDFULLSTORAGESTRATEGYABSTRACTACOMBINEDSYSTEMISANEWTHERMALSTORAGESTRATEGYADOPTEDINTHISSTUDYWITHWHICHTHETWOOTHERKNOWNSTRATEGIESNAMELY,PARTIALANDFULLLOAD,ARECOMPAREDTHERESULTSREVEALEDTHATTHECOMBINEDSYSTEMREQUIRESLARGEREQUIPMENTSIZETHANTHATREQUIREDBYPARTIALSYSTEMTOSATISFYTHESAMECOOLINGLOADFACTORSFANDFTHATPFMAYBEMULTIPLIEDBYTHEDAILYAVERAGECOOLINGLOADTODETERMINETHEOPTIMUMCHILLERSSIZEFORACOMBINEDSYSTEMAREFOUNDTHESEFACTORSAREAPPLICABLEFORANYCOOLINGLOADANDAREBASEDONAGIVENCHILLERCONDENSINGANDEVAPORATINGCONDITIONASUSEDINTHISSTUDYTHESEFACTORSAREFOUNDTOVARYWITHTHENUMBEROFONPEAKHOURSCOMBINEDSTRATEGYREQUIREDCHILLERSIZEWASFOUNDTODECREASEWITHDECREASEINONPEAKPERIOD,HENCETHEOPTIMUMCHILLERSIZEFORTHISNEWSTRATEGYWASFOUNDTOOCCURATZEROONPEAKHOURS,ANDIE,WHENTHECOMBINEDSYSTEMSTARTSTOOPERATEASAPARTIALSTRATEGYSYSTEMKEYWORDSICESTORAGESYSTEM1INTRODUCTIONTHERMALSTORAGEISTHETEMPORARYSTORAGEOFHIGHORLOWTEMPERATUREENERGYFORLATERUSEAIRCONDITIONINGSYSTEMTHATEMPLOYSTHERMALSTORAGEEQUIPMENTINCORPORATESTWOSTRATEGIES,THEPARTIALANDFULLLOADFOREITHEROFTHESESTRATEGIES,INVESTIGATIONSWEREMADETODETERMINETHEPOSSIBLESAVINGINCHILLERSIZEASCOMPAREDWITHCONVENTIONALCOOLINGSYSTEMTHEPARTIALANDFULLSTORAGESTRATEGIESWEREPREVIOUSLYSTUDIEDINDEPENDENTLYANDTHERESULTSOBTAINEDHADSHOWNTHATTHECHILLERSIZEREQUIREDINPARTIALSTRATEGYISSMALLERTHANTHATREQUIREDINFULLSTRATEGYTOSATISFYTHESAMECOOLINGLOAD河南科技大學(xué)畢業(yè)設(shè)計(jì)3FULLSTRATEGIESATTHESAMETIME,ITISIMPORTANTTOFINDTHEMINIMUMCOMBINATIONCHILLERSIZETHATWILLSATISFYTHECOOLINGLOADATASETOFCONDITIONSTHESECONDITIONSARETHEEVAPORATINGANDCONDENSINGPRESSUREANDTEMPERATUREANDTHENUMBEROFONPEAKHOURSDURINGWHICHONLYTHEPARTIALCHILLERISKEPTRUNNINGTHEPROCEDUREADOPTEDINTHISSTUDYINFINDINGTHEMINIMUMCHILLERSIZEMAYBESUMMARIZEDASFOLLOWAANINITIALASSUMPTIONOFTHEPARTIALCHILLERSIZEISTOBEMADETHECHILLERSIZETHUSASSUMEDSHOULDBERELATED,SOMEHOW,TOTHECOOLINGLOADTWODISTINCTVALUESOFTHECOOLINGLOADARETHEMAXIMUMANDTHEAVERAGEVALUEANDTHELATERISCHOSENINTHISSTUDYHENCETHEINITIALPARTIALCHILLERSIZEWILLBETHEAVERAGECOOLINGLOADMULTIPLIEDBYACERTAIN,ARBITRARILYSELECTED,FACTORFPBSINCEAIRCOOLEDCHILLERISUSED,ITSCONDENSINGTEMPERATUREWOULDVARYACCORDINGTOINLETAMBIENTAIRTEMPERATURETHEREFORETHEINITIALPARTIALCHILLERSIZEWOULDBEBASEDONTHECONDENSINGTEMPERATUREATWHICHMAXIMUMCOOLINGLOADOCCURSCCHILLERCAPACITYISTHENDETERMINEDHOURLYANDFORTHEDAILYCYCLEATTHEDIFFERENTEXISTINGCONDENSINGTEMPERATUREDTHEDIFFERENCEBETWEENTHEDAILYCYCLECOOLINGLOADANDTHEDAILYTOTALPARTIALSTRATEGYCHILLERCAPACITYWOULDBEMETBYTHEFULLSTRATEGYCHILLERTHESIZEOFTHISCHILLERISASSUMEDTOBEEQUALTOTHEAVERAGECOOLINGLOADMULTIPLIEDBYAFACTORFANDMUSTEQUALTOTHEDIFFERENCEINDICATEDABOVEIFTHISCONDITIONISNOTSATISFIEDTHENANOTHERVALUEOFFFISSELECTEDETHECOMBINEDSTRATEGYCHILLERSIZEOBTAINEDBYTHEINITIALRUNWITHTHEASSUMEDFPANDCALCULATEDFFMAYNOTBETHEOPTIMUMTHEREFOREANITERATIONPROCEDUREISADOPTEDANDTHEFACTORFPISCHANGEDPROGRESSIVELYUNTILAMINIMUMCHILLERSIZEISOBTAINEDFINORDERTOFINDTHERELATIONBETWEENOPTIMUMCHILLERSIZEANDCOOLINGLOADATDIFFERENTONPEAKHOURS,THEABOVEPROCEDUREISREPEATEDFOREACHONPEAKPERIODSTARTINGFROMSIXANDENDINGWITHZEROONPEAK

簡(jiǎn)介：中文中文5275字出處出處THEINTERNATIONALJOURNALOFADVANCEDMANUFACTURINGTECHNOLOGY,2000,167461468畢業(yè)設(shè)計(jì)中英文翻譯基于模糊綜合評(píng)價(jià)與遺傳算法的公差優(yōu)化分配學(xué)院機(jī)械工程與自動(dòng)化學(xué)院專業(yè)機(jī)械設(shè)計(jì)制造及其自動(dòng)化指導(dǎo)教師2011年6月22綜述公差分配方法綜述公差分配方法2121一般的分配方法一般的分配方法當(dāng)裝配功能需求給定時(shí)，N個(gè)零件的公差值必須得到解決。由于給定的條件幾乎總是不足，所以公差通常被視為相等的。所采用的方法通常包括同容差法，不斷精度因子的方法，同樣影響的一種方法和比例縮放方法。211相同公差在這種方法里，所有零件的公差值在滿足功能要求的前提下都是相等的，也就是TI表示第I個(gè)零件的公差值212常數(shù)因子法常數(shù)因子法基于經(jīng)驗(yàn)法則，一個(gè)零件的公差按標(biāo)準(zhǔn)數(shù)據(jù)的立方根增大，從而當(dāng)時(shí)，因子P可按下式計(jì)算這里J表示裝配的功能要求213同因素方法裝配功能的要求受兩個(gè)因素影響，一個(gè)是每個(gè)零件的公差值，另一個(gè)是功能靈敏度系數(shù)，故這種方法可表述如下214比例縮放方法零件公差首先使用比例縮放方法的數(shù)據(jù)庫(kù)進(jìn)行確定。如果零件公差的總和超過所要求的裝配公差，則每個(gè)零件的公差減少相應(yīng)的尺寸，一般表述為

簡(jiǎn)介：地下工程課程設(shè)計(jì)地下工程課程設(shè)計(jì)壩一級(jí)水電站壩一級(jí)水電站大壩基坑開挖施工組織設(shè)計(jì)大壩基坑開挖施工組織設(shè)計(jì)學(xué)院院資源與環(huán)境工程學(xué)院資源與環(huán)境工程學(xué)院專業(yè)業(yè)姓名名學(xué)號(hào)號(hào)指導(dǎo)教師指導(dǎo)教師年月日5252質(zhì)量管理組織機(jī)構(gòu)質(zhì)量管理組織機(jī)構(gòu)5353過程控制過程控制5454檢驗(yàn)和試驗(yàn)檢驗(yàn)和試驗(yàn)6、施工安全保證體系及措施、施工安全保證體系及措施6161安全工作目標(biāo)安全工作目標(biāo)6262安全管理制度安全管理制度6363施工安全保證措施施工安全保證措施地下工程課程設(shè)計(jì)附圖（參考）地下工程課程設(shè)計(jì)附圖（參考）1、施工區(qū)地形地質(zhì)圖（、施工區(qū)地形地質(zhì)圖（15001500）2、施工場(chǎng)地總布置圖（、施工場(chǎng)地總布置圖（12001200）3、邊坡（基坑）開挖方案平、剖面圖（、邊坡（基坑）開挖方案平、剖面圖（11001100）4、其他圖件、其他圖件

簡(jiǎn)介：MULTIBODYSYSTDYN201533207–228DOI101007/S1104401494098INTEGRATEDROBUSTCONTROLLERFORVEHICLEPATHFOLLOWINGBEHROOZMASHADIPOUYANAHMADIZADEHMAJIDMAJIDIMEHDIMAHMOODIKALEYBARRECEIVED8MARCH2013/ACCEPTED8JANUARY2014/PUBLISHEDONLINE5FEBRUARY2014?SPRINGERSCIENCEBUSINESSMEDIADORDRECHT2014ABSTRACTTHEDESIGNOFANINTEGRATED4WSDYCCONTROLSYSTEMTOGUIDEAVEHICLEONADESIREDPATHISPRESENTEDTHELATERALDYNAMICSOFTHEPATHFOLLOWERVEHICLEISFORMULATEDBYCONSIDERINGIMPORTANTPARAMETERSTOREDUCETHEEFFECTOFUNCERTAINTIESINVEHICLEPARAMETERS,AROBUSTCONTROLLERISDESIGNEDBASEDONAΜSYNTHESISAPPROACHNUMERICALSIMULATIONSAREPERFORMEDUSINGANONLINEARVEHICLEMODELINMATLABENVIRONMENTINORDERTOINVESTIGATETHEEFFECTIVENESSOFTHEDESIGNEDCONTROLLERRESULTSOFSIMULATIONSSHOWTHATTHECONTROLLERHASAPROFOUNDABILITYTOMAKINGTHEVEHICLETRACKTHEDESIREDPATHINTHEPRESENCEOFUNCERTAINTIESKEYWORDSVEHICLEPATHFOLLOWING4WSDYCROBUSTCONTROLΜSYNTHESISNOTATIONALPHABETICASTATESPACEMATRIXBINPUTMATRIXCOUTPUTMATRIXCSETOFCOMPLEXNUMBERSCΑFCΑRCORNERINGSTIFFNESSOFFRONTREARTIRESDOUTPUTFROMPERTURBATIONBLOCKDCONSTANTSCALINGMATRIXEDISTURBANCEMATRIXCGCENTEROFGRAVITYBMASHADIPAHMADIZADEHBMMAJIDISCHOOLOFAUTOMOTIVEENGINEERING,IRANUNIVERSITYOFSCIENCEANDTECHNOLOGY,TEHRAN,IRANEMAILP_AHMADIZADEHIUSTACIRMMAJIDIEMAILM_MAJIDIIUSTACIRMMAHMOODIKALEYBARSCHOOLOFMECHANICALENGINEERING,IRANUNIVERSITYOFSCIENCEANDTECHNOLOGY,TEHRAN,IRANEMAILM_MAHMOODI_KIUSTACIRINTEGRATEDROBUSTCONTROLLERFORVEHICLEPATHFOLLOWING2091INTRODUCTIONWITHTHEPOPULATIONGROWTH,THENUMBERSOFVEHICLESANDPASSENGERSHAVEBEENINCREASEDINTHESTREETSANDHIGHWAYSLEADINGTOMORETRAFFICPROBLEMSSEVERALMEASURESSUCHASBUILDINGNEWHIGHWAYSANDROADSHAVEBEENCONSIDEREDINORDERTOREDUCETRAFFICCONGESTIONANDINCREASINGSAFETY,BUTSUCHMEASURESDONOTALWAYSSUFFICEBECAUSEOFENVIRONMENTALANDCOSTCONSTRAINTSONEWAYTOIMPROVETHESAFETYOFROADSISTOREMOVETHEHUMANELEMENTERRORSDURINGDRIVINGTHISCANLEADTOAUTOMATICDRIVINGTECHNOLOGY,WHICHISTHEFUNDAMENTALOFINTELLIGENTTRANSPORTATIONSYSTEMSITSANDISBEINGSTUDIEDBYMANYRESEARCHERSDURINGRECENTYEARSTHEPRIMARYTASKOFAUTOMATICDRIVINGISTOMAKEANAUTONOMOUSVEHICLETOFOLLOWAREFERENCEPATHAUTOMATICALLYDURINGTHISPATHFOLLOWING,THEREFORE,SEVERALISSUESSHOULDBECONSIDEREDTOHAVEANACCEPTABLEPATHCONTROLVEHICLECONTROLLERSTHATMEETTHESEREQUIREMENTSARECALLEDPATHFOLLOWERSTHEGOALOFAPATHFOLLOWINGCONTROLLERISTOMINIMIZETHELATERALDISTANCEBETWEENTHEVEHICLEANDADEFINEDPATH,TOMINIMIZETHEDIFFERENCEINTHEVEHICLEANDTHEPATHHEADINGSANDTOLIMITTHECONTROLINPUTTOSMOOTHENTHEMOTIONSWHILEMAINTAININGTHESTABILITYSEVERALSTUDIESHAVEBEENCARRIEDOUTREGARDINGTHEPATHFOLLOWINGPROBLEMELHAJJAJIETAL1FOCUSEDONTHEDESIGNOFASTABILIZINGFUZZYCONTROLLERFORTHEPATHFOLLOWINGPROBLEMOFVEHICLESUSINGANONLINEARDYNAMICSMODELTHEVEHICLEMODELISAPPROXIMATEDBYASETOFLINEARMODELSINTERPOLATEDBYFUZZYMEMBERSHIPFUNCTIONS,ANDTHENAMODELBASEDFUZZYCONTROLLERISDEVELOPEDTOSTABILIZETHEMODELTHENTHEOUTCOMEOFTHEPATHFOLLOWINGPROBLEMISPARAMETERIZEDINTERMSOFALINEARMATRIXINEQUALITYLMIPROBLEMTHELMIPROBLEMISSOLVEDBYACONVEXOPTIMIZATIONTECHNIQUETOCOMPLETETHEFUZZYPATHFOLLOWINGCONTROLDESIGNFORVEHICLESCONSOLINIETAL2CONSIDEREDASPECIALPATHFOLLOWINGTASKSOTHATAGIVENFRONTPOINTOFACARLIKEVEHICLE,WHICHISWITHINTHELOOKAHEADRANGEOFASTEREOVISIONSYSTEM,TOFOLLOWAPRESPECIFIEDCARTESIANPATHASOLUTIONTOTHISPATHFOLLOWINGPROBLEMWASPROVIDEDBYAFEEDBACK/FEEDFORWARDCONTROLSTRATEGYWHERETHEFEEDFORWARDWASDETERMINEDBYADYNAMICGENERATORBASEDONEXACTDYNAMICINVERSIONOVERTHENOMINALVEHICLEMODELANDTHEFEEDBACKWASMAINLYISSUEDBYCORRECTINGTERMSPROPORTIONALTOTHETANGENTIALANDNORMALERRORSDETERMINEDWITHRESPECTTOTHEVEHICLE’SIDEALTRAJECTORYBALLUCHIETAL3CONSIDEREDAKINEMATICMODELOFANONHOLONOMICWHEELEDVEHICLETOFOLLOWAPATHTHEYASSUMEDTHATTHECURRENTDISTANCEANDTHEHEADINGANGLEERRORWITHRESPECTTOTHECLOSESTPOINTONTHEREFERENCEPATHCANBEMEASUREDBUTONLYTHESIGNOFTHEPATHCURVATUREISDETECTEDTHEYUSEDAHYBRIDSYSTEMFORMALISMTOMODELTHEPROBLEMBASEDONOPTIMALCONTROLTHEORY,ASTHEFEEDBACKINFORMATIONWASBOTHCONTINUOUSANDDISCRETEHELLSTR?METAL4PROPOSEAPATHTRACKINGALGORITHMCALLEDFOLLOWTHEPAST,INWHICHAHUMANDRIVERDRIVESTHEPATHONCE,WHILETHECOMPUTERRECORDSTHEPOSITION,VELOCITY,ORIENTATION,ANDSTEERINGANGLETHENTHISPIECEOFINFORMATIONISUSEDTOCONTROLTHEVEHICLEEACHTIMEITAUTONOMOUSLYTRAVELSALONGTHEPATHIFTHEVEHICLEGETSOFFTHECOURSE,FOREXAMPLE,ASARESULTOFAVOIDINGANOBSTACLEORBECAUSEOFNOISEINPOSITIONINGSENSORS,THEFOLLOWTHEPASTALGORITHMSTEERSLIKETHEDRIVER,PLUSANADDITIONALANGLE,BASEDONTHEDISTANCETOTHEPATHHEREDIAETAL5PRESENTAMETHODTOANALYZETHESTABILITYOFANAUTONOMOUSVEHICLEPATHFOLLOWINGALGORITHMTAKINGINTOACCOUNTEXPLICITLYTHECOMPUTATIONANDCOMMUNICATIONDELAYSINTHECONTROLLOOPTHESEPUREDELAYSAREPRESENTINAUTONOMOUSVEHICLESDUETOPOSITIONESTIMATIONTHEPROBLEMISANALYZEDBYSOLVINGDIRECTLYTHETRANSCENDENTALCHARACTERISTICEQUATIONTHATAPPEARSWHENTHETIMEDELAYISCONSIDEREDTHEANALYSISISCARRIEDOUTFORSTRAIGHTPATHSANDPATHSOFCONSTANTCURVATURE,ANDTHEMETHODISAPPLIEDTOTHEPUREPURSUITPATHTRACKINGALGORITHMGOODARZIETAL6TREATEDTHISPROBLEMBYTHEAPPLICATIONOFALINEARQUADRATICREGULATORLQRTECHNIQUETHEYUSEDANINTEGRATEDCONTROLLERCOMPRISING

簡(jiǎn)介：第1頁(yè)共23頁(yè)摘要本設(shè)計(jì)是新密市第一高級(jí)中學(xué)綜合樓施工組織設(shè)計(jì)，由Ⅰ部和Ⅱ部組成L型轉(zhuǎn)角樓。建筑采用鋼筋混凝土框架結(jié)構(gòu)。本設(shè)計(jì)包括劃分施工段，確定流水方向；選擇施工起重機(jī)械，核實(shí)其技術(shù)性能，計(jì)算起重機(jī)臺(tái)數(shù)，安排起重機(jī)位置及其附屬設(shè)備的位置；確定承重結(jié)構(gòu)的施工方法，順序及施工要點(diǎn)確定腳手架的類型及位置；編制單位工程進(jìn)度計(jì)劃；確定資源需要量計(jì)劃；施工現(xiàn)場(chǎng)平面布置；施工工藝的確定。最后本施工組織符合要求?！娟P(guān)鍵詞】施工段；施工進(jìn)度；平面布置；施工工藝；單位工程進(jìn)度第3頁(yè)共23頁(yè)新密市第一高級(jí)中學(xué)綜合樓工程施工組織設(shè)計(jì)新密市第一高級(jí)中學(xué)綜合樓工程施工組織設(shè)計(jì)一、工程概況及施工條件一、工程概況及施工條件1、施工概況、施工概況本工程為新密市第一高級(jí)中學(xué)綜合樓，位于解放路，由I部和II部組成L型轉(zhuǎn)角樓。采用現(xiàn)澆柱，預(yù)制梁，整體裝配式鋼筋混凝土框架結(jié)構(gòu)。11層高及建筑面積I部五層，頂高21M，層高42M，II部為六層，頂高231M，12層層高48M，3、4、5層層高為33M，6層層高為36M。總建筑面積7834M2。12絕對(duì)標(biāo)高±000相當(dāng)于絕對(duì)標(biāo)高425044。13結(jié)構(gòu)方案本工程為裝配整體式框架結(jié)構(gòu)，橫向框架梁為預(yù)制迭合梁，縱向框架梁，次梁，柱，樓梯等均為現(xiàn)澆。樓蓋除廁所、盥洗、水箱間及二層售飯?zhí)帪楝F(xiàn)澆外，其余均為預(yù)制空心板，上有4CM整澆層。墻體為非承重墻，外墻為240M厚普通粘土磚墻，內(nèi)墻為大孔空心磚墻。施工時(shí)橫向預(yù)制梁吊裝后再現(xiàn)澆縱向框架梁和次梁。14樓地面水泥砂漿地面用于II部廚房和庫(kù)房，教室宿舍等。水磨石地面用于上述以外的其它部位，底層地面墊層為60厚100素混凝土。15頂棚及墻面I部樓梯間為石膏板隔墻，貼白色塑料壁紙。其它頂棚及墻面均為石灰砂漿打底，紙筋灰罩面，噴白灰漿二道。16外墻面為綠色水刷石，局部構(gòu)件（檐口、陽(yáng)臺(tái)、雨蓬）及凸出墻面壁柱等貼馬賽克。17屋面防水層瀝青膠隔汽層，水泥蛭石保溫層，二氈三油防水層上鋪綠豆砂。2、施工工期、施工工期基礎(chǔ)工程由甲方自己完成。施工單位由000開始，總工期為8個(gè)月。從2007年3月1日至同年10月30竣工。3、施工條件、施工條件31地質(zhì)及環(huán)境條件由勘測(cè)報(bào)告，土壤為一級(jí)大孔性黃土，天然地基承載力為15T/M2，地下水位在地表下67M。

簡(jiǎn)介：ORIGINALARTICLEANINTEGRATEDSYSTEMFORULTRAPRECISIONMACHINETOOLDESIGNINCONCEPTUALANDFUNDAMENTALDESIGNSTAGEWANQUNCHEN1THEREFORE,ITISCRITICALTHATTHESUITABLECONCEPTOFTHESTRUCTUREISCHOSENINTHECONCEPTUALANDFUNDAMENTALDESIGNSTAGEPROCESSBECAUSE80OFTHEFINALCOSTANDQUALITYOFAPRODUCTAREDESIGNEDINTHISPHASE10,11THEREFORE,TODESIGNASUITABLEMACHINETOOLSTRUCTUREWITHHIGHSTATIC,DYNAMIC,ANDTHERMALFEATURESISVERYESSENTIALINORDERTOEVALUATETHECONFIGURATIONOFMACHINETOOLS,KONOETAL12DEVELOPEDTHEIWFAXISCONSTRUCTIONKITACK,WHICHCANREALIZETHERIGIDBODYSIMULATIONSANDSIMPLEELASTICBODYSIMULATIONSOFTHEMACHINETOOLERSALETAL13PROPOSEDAMODULARMODELINGAPPROACHFORTHEDESIGNOFRECONFIGURABLEMACHINETOOLSRMTTHESEMODELSCANBEUSEDFORTHEEVALUATION,DESIGN,ANDCONTROLOFTHERMTSERVOAXESPARKANDSOHN14DEVELOPEDANINTEGRATEDDESIGNSYSTEMFORSTRUCTURALDESIGNOFMACHINETOOLSTHESYSTEMISAKNOWLEDGEBASEDDESIGNSYSTEMANDHASTHREEMACHINETOOLSPECIFICFUNCTIONALMODULES,INCLUDINGTHEFOLLOWINGCONFIGURATIONDESIGNANDANALYSIS,STRUCTURALELEMENTDESIGN,ANDSTRUCTURALANALYSISSUPPORTMODULETHESYSTEMMAKESTHEMACHINESTRUCTUREDESIGNQUICKLYANDCONVENIENTLYWOONGETAL15DEVELOPEDANINTELLIGENTSOFTWARESYSTEMWHICHCANSUPPORTEFFICIENTLYANDWANQUNCHENCHWQHITEDUCN1CENTERFORPRECISIONENGINEERING,HARBININSTITUTEOFTECHNOLOGY,HARBIN150001,PEOPLE’SREPUBLICOFCHINA2DEPARTMENTOFDESIGN,MANUFACTURE2?NDTD1TWIJKIISTHEINTEGRATEDRATINGFOROPERATIONFACTORXIINAPARTICULARVALUEOFJFIG2INTEGRATEDDESIGNSYSTEMFIG3THECONFIGURATIONSELECTIONNETWORKINTJADVMANUFTECHNOL

簡(jiǎn)介：變電工程課程設(shè)計(jì)設(shè)計(jì)說明書錯(cuò)誤錯(cuò)誤未定義書簽。未定義書簽。平羅鄉(xiāng)新建變電所的可行性分析1建設(shè)的必要性1負(fù)荷發(fā)展及預(yù)測(cè)2工程概況2工程投資估算2主要設(shè)備及資金來源2計(jì)劃人員編制3負(fù)荷統(tǒng)計(jì)與計(jì)算3負(fù)荷分布圖3按每條饋出線為單位進(jìn)行負(fù)荷統(tǒng)計(jì)3計(jì)算變電站的總?cè)萘?主變?nèi)萘亢团_(tái)數(shù)的確定7主變?nèi)萘看_定7變壓器臺(tái)數(shù)的確定7主接線設(shè)計(jì)10短路電流計(jì)算12系統(tǒng)圖12網(wǎng)絡(luò)阻抗圖13短路電流計(jì)算14電氣設(shè)備選擇16高壓斷路器的選擇16隔離開關(guān)的選擇18互感器的選擇19母線的選擇20穿墻套管及絕緣子選擇21所用變壓器的選擇21避雷器的選擇21電氣設(shè)備表22接地裝置與防雷保護(hù)22保護(hù)接地裝置22防雷接地裝置23防雷保護(hù)計(jì)算2410KV配電線路的設(shè)計(jì)計(jì)算書24導(dǎo)線截面的選擇和校驗(yàn)25基本參數(shù)25比載計(jì)算25計(jì)算臨界檔距，并確定控制條件下的控制范圍262落后面貌，提高農(nóng)業(yè)的抗災(zāi)能力，預(yù)計(jì)在3年內(nèi)要達(dá)水田井200眼，菜田電井100眼，還要建中型排水站一座，預(yù)計(jì)裝機(jī)容量可達(dá)5500千瓦。為充分發(fā)揮電力在經(jīng)濟(jì)建設(shè)中的作用，提高該地區(qū)的農(nóng)民經(jīng)濟(jì)收入。平羅變電所的建設(shè)是非常必要的，也是該地區(qū)群眾所急需的，更是該地區(qū)經(jīng)濟(jì)繁榮發(fā)展的希望所在。負(fù)荷發(fā)展及預(yù)測(cè)負(fù)荷發(fā)展及預(yù)測(cè)根據(jù)鄉(xiāng)村工業(yè)發(fā)展和社會(huì)主義新農(nóng)村建設(shè)的情況來看，預(yù)計(jì)鄉(xiāng)村工業(yè)三年內(nèi)可達(dá)1000千瓦，隨著家用電器的普及，預(yù)計(jì)三年內(nèi)可增加500千瓦，負(fù)荷可達(dá)9000千瓦。預(yù)計(jì)在三年內(nèi)要打水田井200眼，菜田電井100眼，還要建中型排水站1座，局級(jí)裝機(jī)容量可達(dá)5500千瓦。工程概況工程概況（1）工程地址新建變電所計(jì)劃在平羅村南，該地址在用電負(fù)荷中心，而且地勢(shì)平坦。送電線路計(jì)劃在成民線路上“T”接，而且建設(shè)方面，10千伏配電線路走向方便合理，便于檢修維護(hù)。（2）送電線工程新建66千伏送電線路，距離6公里。（3）變電工程按兩臺(tái)63000KVA主變?cè)O(shè)計(jì)，暫設(shè)10KV配出線6回。變電所一次采用入口刀閘，兩臺(tái)主變66KV側(cè)設(shè)斷路器保護(hù)。（4）土建工程概況1新建高壓配電室及附屬間230M2）新建地區(qū)農(nóng)電所辦公室300M，運(yùn)行員宿舍250M。3）新建圍墻400延長(zhǎng)米。4）各種開關(guān)電器基礎(chǔ)130M。（5）通訊設(shè)施1）新建變電所內(nèi)安自動(dòng)電話機(jī)一部；2）安裝新建變電所與農(nóng)電局調(diào)度聯(lián)系的高頻無線電話分機(jī)一部。工程投資估算工程投資估算新建配電線路搭接10KM，總計(jì)需投資151萬(wàn)元（1）送電線工程18萬(wàn)元；（2）配電工程15萬(wàn)元；（3）變電所電器材料60萬(wàn)元；（4）土建工程20萬(wàn)元；（5）貼費(fèi)38萬(wàn)元。主要設(shè)備及資金來源主要設(shè)備及資金來源（1）資金來源區(qū)鄉(xiāng)二級(jí)政府自籌50萬(wàn)元，市政府撥款100萬(wàn)元。（2）主要設(shè)備來源采取國(guó)家調(diào)撥及自籌相結(jié)合的方式。

簡(jiǎn)介：課程設(shè)計(jì)報(bào)告書所屬課程名稱所屬課程名稱單片機(jī)原理及應(yīng)用單片機(jī)原理及應(yīng)用題目基于單片機(jī)的交通燈顯示系統(tǒng)基于單片機(jī)的交通燈顯示系統(tǒng)分院電信分院電信分院專業(yè)班級(jí)專業(yè)班級(jí)電子信息工程電子信息工程1班學(xué)號(hào)學(xué)生姓名學(xué)生姓名指導(dǎo)教師指導(dǎo)教師20182018年1月1010日第3頁(yè)共18頁(yè)第1章課程設(shè)計(jì)內(nèi)容及要求課程設(shè)計(jì)內(nèi)容及要求設(shè)計(jì)內(nèi)容及要求如下1、東西干道和南北干道的通行分左行、右行、直行，其中左行、右行固定15秒；直行固定30秒（20分）2、信號(hào)燈分綠燈（3種）、紅燈、黃燈，每次綠燈換紅燈時(shí)，黃燈亮3秒鐘。（20分）3、東西干道和南北干道交替控制，每次干道綠燈交替時(shí)，有3秒鐘所有干道的交通燈都是黃燈閃爍3秒鐘，提示已經(jīng)進(jìn)入路口的車輛迅速通過。（20分）4、帶緊急按鈕功能，當(dāng)緊急按鈕按下時(shí)，所有方向均亮起紅燈（10分）5、夜間運(yùn)行模式按鈕，按下時(shí)，所有方向黃燈閃爍；（10分）6、可更在線修改紅綠燈等待間隔時(shí)間。（10分）7、實(shí)現(xiàn)顯示倒計(jì)時(shí)功能。（10分）8、其他創(chuàng)新內(nèi)容。（附加分附加分1010分）圖示

簡(jiǎn)介：EDA課程設(shè)計(jì)報(bào)告課程設(shè)計(jì)報(bào)告題目題目循環(huán)八路彩燈設(shè)計(jì)循環(huán)八路彩燈設(shè)計(jì)院系班級(jí)姓名學(xué)號(hào)小組成員指導(dǎo)教師2一．設(shè)計(jì)任務(wù)分析一．設(shè)計(jì)任務(wù)分析1設(shè)計(jì)任務(wù)設(shè)計(jì)任務(wù)1彩燈明暗變化節(jié)拍為025S和05S兩種節(jié)拍，可以自動(dòng)交替運(yùn)行，也可以采用按鍵是否按下進(jìn)行切換。2演示花型3種，分別為左移、右移、閃爍。每種花型顯示時(shí)間維持1分鐘。3彩燈用發(fā)光二極管LED模擬。4要求系統(tǒng)用兩種節(jié)拍交替循環(huán)顯示3種花型。2任務(wù)分析任務(wù)分析1該系統(tǒng)的外加信號(hào)為時(shí)鐘，輸出為8路彩燈信號(hào)。彩燈控制器按一定的節(jié)拍改變8路輸出的高低電平，控制彩燈按預(yù)定的規(guī)律亮滅，從而顯示一定的花型。根據(jù)設(shè)計(jì)任務(wù)，彩燈控制器應(yīng)包含時(shí)鐘電路編碼器和控制電路。時(shí)鐘可以采用實(shí)驗(yàn)板上的時(shí)鐘信號(hào)；編碼器根據(jù)花型要求按節(jié)拍產(chǎn)生8位輸出編碼信號(hào)，控制彩燈按規(guī)律亮滅；控制電路則應(yīng)控制編碼器的節(jié)拍脈沖和3種花形的循環(huán)切換，同步整個(gè)系統(tǒng)工作。2選擇1HZ時(shí)鐘脈沖作為系統(tǒng)時(shí)鐘。3025S和05S秒信號(hào)由時(shí)鐘分頻獲得。4循環(huán)顯示方式自定可以按照左移閃爍右移左移方式顯示，也可以按照其他方式顯示。

簡(jiǎn)介：電力電子課程設(shè)計(jì)三相橋式全控整流電路的研究學(xué)生姓名學(xué)院自動(dòng)化工程學(xué)院班級(jí)電氣工程081學(xué)號(hào)三相橋式可控整流電路2102322下午10/9/2020目錄內(nèi)容提要一設(shè)計(jì)目的及要求和任務(wù)二．三相半控整流電路的原理說明三．相晶閘管全控整流電路的保護(hù)電路設(shè)計(jì)方案的選擇與論證四主電路與觸發(fā)電路的同步五．參數(shù)選擇六．總電路圖七設(shè)計(jì)體會(huì)八參考文獻(xiàn)

簡(jiǎn)介：CAD/CAE/CAMINTEGRATIONFORINCREASINGTHEACCURACYOFMASKRAPIDPROTOTYPINGSYSTEMYOUMINHUANG,HSIANGYAOLANDEPARTMENTOFMECHANICALENGINEERING,NATIONALTAIWANUNIVERSITYOFSCIENCEANDTECHNOLOGY,43KEELUNGROAD,SECTION4,TAIPEI106,TAIWANRECEIVED5JULY2004ACCEPTED13JANUARY2005AVAILABLEONLINE17MARCH2005ABSTRACTSSTEREOLITHOGRAPHYISARAPIDPROTOTYPINGRPPROCESSTHATUSESPHOTOPOLYMERSASTHERAWMATERIALSFROMWHICHTHEPROTOTYPESAREBUILTTHEPHOTOPOLYMERICRPSYSTEMUSESLASERSOROTHERLIGHTSOURCESTOEXPOSESELECTIVELYTHESURFACEOFTHELIQUIDRESINTHEABSORPTIONOFENERGYCAUSESPHOTOPOLYMERIZATIONTHATCHANGESTHELIQUIDRESININTOASOLID,EXPANDINGTHECUREDVOLUMEEXPANDINGBUTSHRINKINGSIMULTANEOUSLYTHEVOLUMESHRINKAGEANDCURLDISTORTIONOFTHERESINDURINGPHOTOPOLYMERIZATIONARETHEMAINREASONSFORTHEPOORACCURACYOFTHEBUILTPROTOTYPE,ESPECIALLYWHENTHEPARTISHOLLOW,INWHICHCASETHEBENDINGISGREATERBECAUSEOFTHEBENDINGSTRESSANDCANNOTBECOMPENSATEDFORNORMALLY,ADESIGNERBUILDSASUPPORTINTHISSTAGETOLIMITTHEFURTHERBENDINGANDDEFORMATIONOFTHEPROTOTYPEHOWEVER,AFTERTHESUPPORTHASBEENREMOVEDFROMTHEBUILTPROTOTYPE,THEGEOMETRICPROFILEISEASILYDAMAGEDANDDEFORMED,SOTIMEISWASTEDTHISSTUDYINITIALLYUSESDYNAMICFINITEELEMENTSIMULATIONCODETOSIMULATEPHOTOPOLYMERIZATION,TODETERMINETHEDISTORTIONOFTHEOUTERPROFILEOFTHEPARTANDTHUSREDUCETHEDEFORMATIONTHEN,AREVERSEDISTORTIONCORRECTIONISAPPLIEDTOTHEOUTERPROFILEOFTHEPARTANEWREVERSECOMPENSATIONCADMODELISPRODUCEDANDLOADEDINTOARPMACHINEFORPRACTICALPROTOTYPEPROCESSING,TOINCREASETHEACCURACYOFTHEPROCESSFINALLY,THE‘‘H4’’DIAGNOSTICPARTISUSEDASANEXAMPLETOVERIFYTHEEXPERIMENTALRESULTSTHERESULTSOFTHESIMULATIONANDEXPERIMENTONTHEFINALAFTERCOMPENSATIONWEREACCURATE2005ELSEVIERBVALLRIGHTSRESERVEDKEYWORDSCOMPUTERAIDEDENGINEERINGSTEREOLITHOGRAPHYRAPIDPROTOTYPINGFINITEELEMENTMETHODCURLDISTORTION1INTRODUCTIONINDUSTRIALCOMPETITIONHASACCELERATEDTHEDEVELOPMENTOFRAPIDPROTOTYPINGRPSYSTEMSTHEUSEOFRAPIDPROTOTYPINGSYSTEMSCANACCELERATERFAX886227376460EMAILADDRESSESYMHUANGMAILNTUSTEDUTWYMHUANG,LANHFHYMSAHINETNETHYLAN01663615/–SEEFRONTMATTER2005ELSEVIERBVALLRIGHTSRESERVEDDOI101016/JCOMPIND200501002ANDJIANG8,9USEDTHEDYNAMICFINITEELEMENTMETHODDFEMTOSIMULATESTEREOLITHOGRAPHY,BASEDONTHEDYNAMICPROPERTIESOFPHOTOPOLYMERIZATIONMANYOFTHESESTUDIESHAVEFOCUSEDONANALYZINGTHEEFFECTOFCURINGDURINGBUILDUPHOWEVER,ONLYAFEWSTUDIESHAVESOUGHTTOIMPROVECURLDISTORTION,ESPECIALLYWHENTHEBUILTPARTISHOLLOWTHISBENDINGISVERYOBVIOUSANDCANNOTBECOMPENSATEDBYBENDINGSTRESSTHISSTUDYPRESENTSVERIFICATIONANDVALIDATIONMETHODSTOIMPROVETHECURLDISTORTIONUSINGLOWCOSTEQUIPMENTFIRST,THEEQUATIONBASEDONDFEMTHEORY8,9,ISUSEDHEREININNUMERICALSIMULATIONWITHINPUTPARAMETERSTHATCORRESPONDTOAPRACTICALPROCESSESTHEN,THEDISTORTIONOFTHEBUILTPARTSISPREDICTEDSECOND,REVERSEDISTORTIONCOMPENSATIONISUSEDTOPRODUCEANEWCADMODELTHATISBASEDONTHEPREDICTEDDISTORTIONTHIRDLY,THENEWCADMODELISCONVERTEDINTOASTEREOLITHOGRAPHICSTLFILEFINALLY,THISNEWSTLFILEISSENTTOARPMACHINEFORFURTHERPROCESSINGACCORDINGLY,THELOWCOSTMACHINESGREATLYIMPROVETHEACCURACYOFTHEPARTTHEFINALRESULTSOFTHESIMULATIONANDEXPERIMENTARECOMPAREDFIG1SHOWSAFLOWCHARTOFTHISPROCESS2NUMERICALANALYSISAMODIFIEDMATHEMATICALMODELISPROPOSED,BASEDONTHEAFOREMENTIONEDREFERENCEANDEXPERIMENTALYMHUANG,HYLAN/COMPUTERSININDUSTRY562005442–456444FIG3THEFLOWCHARTOFTHESIMULATIONPROCESS

簡(jiǎn)介：此文檔是畢業(yè)設(shè)計(jì)外文翻譯成品（含英文原文中文翻譯），無需調(diào)整復(fù)雜的格式下載之后直接可用，方便快捷本文價(jià)格不貴,也就幾十塊錢一輩子也就一次的事外文標(biāo)題THEDESIGNANDREALIZATIONOFPECOURSESELECTIONSYSTEMBASEDONB/S/SSTRUCTURETECHNOLOGY外文作者WEIDONGLI，YUKUOWANG文獻(xiàn)出處2018INTERNATIONALCONFERENCEONCOMPUTATIONALANDINFORMATIONSCIENCES如覺得年份太老，可改為近2年，畢竟很多畢業(yè)生都這樣做英文2363單詞，14723字符字符就是印刷符，中文3717漢字。（如果字?jǐn)?shù)多了，可自行刪減，大多數(shù)學(xué)校都是要求選取外文的一部分內(nèi)容進(jìn)行翻譯的。）THEDESIGNANDREALIZATIONOFPECOURSESELECTIONSYSTEMBASEDONB/S/SSTRUCTURETECHNOLOGYABSTRACTINORDERTOSOLVETHEPROBLEMSINCOLLEGEPECOURSESELECTIONSUCHASTHEDISORDER,BEINGTIMECONSUMINGANDHARDTOMANAGE,THISPAPER,CONSIDERINGTHESPECIALTYCHARACTERISTICSOFCOLLEGEPECOURSEMANAGEMENT,CONSTRUCTSONLINECOURSESELECTIONSYSTEMBASEDONB/S/SMODEBYADOPTINGASPDYNAMICWEBPAGESTECHNOLOGYCOMBINEDWITHDATABASETECHNOLOGYODBCANDADOTHESYSTEMINCLUDESTHREEFUNCTIONMODULESSTUDENTS’FUNCTIONMODULE,TEACHERS’FUNCTIONMODULEANDADMINISTRATOR’SFUNCTIONMODULE,ANDITREALIZESTHEFUNCTIONSSUCHASINFORMATIONSETTING,INFORMATIONQUERY,INFORMATIONBROWSING,INFORMATIONMODIFICATIONANDINFORMATIONADDITION,ETCMEANWHILE,THISPAPERALSOPUTSEMPHASISONTHEINTRODUCTIONOFVARIOUSFUNCTIONMODULES,SYSTEMSTRUCTURE,KEYTECHNOLOGY,ANDDESIGNOFDATABASEANDTHEREALIZATIONOFSECURITYMECHANISMOFTHESYSTEMAFTERTEST,THISSYSTEMHASTHECHARACTERISTICSOFCONVENIENT,FASTANDSTABLEOPERATION,ANDITHASASTRONGINTERACTIONTHISSYSTEMBASICALLYREALIZESTHEFUNCTIONSSUCHASONLINECOURSESELECTION,COURSESELECTIONMANAGEMENT,ANDCOURSESELECTIONQUERY,ETC,WHICHSATISFIESTHEDEMANDSOFCOLLEGEPETEACHINGINFORMATIZATIONMANAGEMENTTHESYSTEMTAKESADOACTIVEXDATAOBJECTCOMPONENTASDATABASESOLUTION23,BECAUSEADOISALMOSTCOMPATIBLEWITHALLKINDSOFDATABASESYSTEMSINASPPAGES,ADOOBJECTSCANBECALLEDTOREALIZETHEOPERATIONTODATABASE,WHICHACCESSESDATABASETHROUGHODBCORRELEVANTDATABASEENGINETOCGIPROGRAM,ITISMULTITHREADINGANDWHENALARGENUMBEROFCONCURRENTREQUESTSOCCUR,ITCANMAINTAINTHEOPERATIONEFFICIENCYOFTHESERVERCOMPAREDTOISAPI,ITSDEVELOPINGTOOLLANGUAGEISSIMPLE,ITSWORKLOADISLITTLE,ITTAKESLESSSYSTEMRESOURCESANDITSEFFICIENCYISVERYHIGH,BUTBECAUSEISAPIPROCESSANDSERVERPROCESSAREINTHESAMESYSTEMPROCESSSPACE,AVIOLATIONOPERATIONMAYLEADTOTHECOLLAPSEOFTHEWEBSERVER,ESPECIALLYFORPECOURSESELECTIONSYSTEMWHICHISANEWNETWORKAPPLICATIONSOFTWARE,MISTAKECANNOTBEAVOIDEDINOPERATIONTHUS,THEADVANTAGESOFAODSHOULDBEUTILIZEDEASYTOUSE,HIGHSPEED,TAKINGSMALLMEMORYANDDISKSPACEBYCOMBINATIONWITHASP,WEBPAGESCANBESETUPTOPROVIDEDATABASEINFORMATIONANDALLOWVISITORSTOREALIZETHEFUNCTIONSSUCHASQUERYING,INSERTING,UPDATINGANDDELETINGSTATIONSERVERINTHEBROWSERFIGURE2FIGURE2THESYSTEMSTRUCTUREOFASPDATABASEACCESSTECHNOLOGYIIISYSTEMSTRUCTURETHISSYSTEMADOPTSB/S/SSTRUCTURE,WHICHSTANDSFORTHECURRENTDEVELOPMENTTENDENCYOFDATABASEAPPLICATIONSOFTWARETECHNOLOGY4B/S/SSTRUCTUREISTHEINHERITANCEANDDEVELOPMENTOFC/SSTRUCTURE,WHICHISTHEDATABASESYSTEMSTRUCTUREFORMEDINTHEPROCESSOFTHECOMBINATIONOFINTERNETTECHNOLOGYANDDATABASETECHNOLOGYB/S/SSTRUCTUREISBASEDONTCP/IPOPENNETWORKSTANDARDPROTOCOLS,WHICHHAVESTRONGSYSTEMINDEPENDENCEANDPLATFORMINDEPENDENCEITFULLYDISPLAYSTHEHIGHLYEFFICIENTDATASTORAGEANDDATAMANAGEMENTCAPACITYOFDBMSANDAPPLIES

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