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簡介:長沙理工大學(xué)碩士學(xué)位論文變曲率豎曲線鋼混凝土組合連續(xù)梁負(fù)彎矩區(qū)施工過程仿真分析及控制姓名薛楚渤申請學(xué)位級(jí)別碩士專業(yè)港口、海岸及近海工程指導(dǎo)教師趙利平20120519ABSTRACTSTEELCONCRETECOMPOSITEBEAMINCLUDESHIGHERTENSILEPROPERTIESOFSTEELANDGIVESFULLPLAYTHECHARACTERISTICSOFHIGHCOMPRESSIVESTRENGTHOFCONCRETESTEELCONCRETECOMPOSITEBEAMISWIDELYAPPLIEDINMODERNLARGESPANBRIDGESANDOTHERSTRUCTURALENGINEERINGTHEREAREMANYCOMMONABOUTSTRUCTURALDESIGNANDCONSTRUCTIONTECHNOLOGYBETWEENTHETRESTLEOFPORTPROJECTANDCONTINUOUSBEAMBRIDGEOFBRIDGEENGINEERING,WHICHCANLEARNFROMEACHOTHERIFTHECOMPOSITESTRUCTURECANBESUCCESSFULLYINTRODUCEDINTOWATERWAYENGINEERINGCONSTRUCTION,WHICHCANOVERCOMETHECOMMONUNFAVORABLENATURALCONDITIONSSUCHASDEPTH,STRONGWIND,WAVEHEIGHTINTHEWHARFTRESTLEDESIGNANDCONSTRUCTIONTHESPANTRESTLECANREDUCETHENUMBEROFDEEPWATERFOUNDATION,GREATLYREDUCEPROJECTCOST,CREATEABETTERECONOMICANDSOCIALBENEFITS,PROMOTEWATERWAYCAUSEHEALTHYANDRAPIDDEVELOPMENTHOWEVER,THENEGATIVEMOMENTAREAOFCONTINUOUSCOMPOSITEBEAMMEDIUMSUPPORTPRODUCETHEUNFAVORABLECONDITIONSOFSTEELCOMPRESSEDANDCONCRETEPULLED,WHICHMAYINDUCETHEBRIDGEDECKCONCRETESLABCRACKINGANDAFFECTTHEDURABILITYANDSERVICELIFEOFSTRUCTURETHECRACKSOFBRIDGEDECKCONCRETEDUETOBEINGPULLEDCANBESOLVEDTHROUGHTHEIMPOSITIONOFCERTAINPRESTRESSEDBRIDGEDECKCONCRETETAKINGCOMBINEDWITHCONSTRUCTIONOFTHESTEELCONCRETECOMPOSITEBEAMASANEXAMPLE,THISPAPERESTABLISHTHEELABORATEFINITEELEMENTMODELOFTHEMIXINGUNITBYADOPTINGTHELARGESCALEDFINITEELEMENTSOFTWAREANSYSL20ITISSIMULATIONANALYZEDTHATTHEMECHANICALCHARACTERISTICSOFTHEWHOLECOMPOSITEBEAMNEGATIVEMOMENTCONSTRUCTIONPROCESSTHEWHOLECOMBINE’CONSTRUCTIONPROCESSISA11ROUNDMONITOREDACCORDINGTOMONITORINGSCHEMEDETAILEDMADEONTHERESULTOFSIMULATIONANALYSISANDTHECHARACTERISTICSOFFIELDCONSTRUCTIONTHECONSTRUCTIONCONTROLSUGGESTIONPUTFORWARDPROVIDESACERTAINREFERENCEABOUTDESIGNANDCONSTRUCTIONOFSIMILARCOMPOSITEBEAMTHEMAINCONTENTSAREASFOLLOWS1INTRODUCINGTHEAPPLICATIONPROSPECTONTHESTEELCONCRETECOMPOSITEBEAMINTHEPORTANDWATERWAYENGINEERING,EXPLAININGTHECALCULATIONTHEORYONCALCULATIONOFBENDINGSTRENGTHOFCOMPOSITEBEAMNEGATIVEMOMENTANDTHEPROCESSINGMETHODOFNEGATIVEMOMENTAREA2COMBININGWITHTHEBRIDGECOMPOSITEBEAMCONSTRUCTIONPROCESS,ACCORDINGII
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簡介:⑧論文作者簽名皇塑論文評(píng)閱人1題太強(qiáng)副數(shù)援浙江太堂評(píng)閱人2渣拍松教援逝江王些太堂評(píng)閱人3塑型壬塾援楦州電王型撞太堂評(píng)閱人4評(píng)閱人5答辯委員會(huì)主席_醫(yī)國全教援杭州電壬型拉太堂委員1醫(yī)國全教援杭州電王型撞太堂一.委員2塞徨垂教援浙江科拉堂瞳委員3迕滄墓量4數(shù)援浙江太堂委員4委員5浙江大學(xué)碩士學(xué)位論文摘要摘要低壓鑄造是汽車輪轂的主要生產(chǎn)工藝,但在鑄造過程中輪轂容易產(chǎn)生縮孔、縮松等缺陷。這些缺陷跟模具的溫度有關(guān),穩(wěn)定鑄模的溫度可以減少缺陷的產(chǎn)生。過程建模正逐漸成為一種改進(jìn)和優(yōu)化工業(yè)過程的關(guān)鍵技術(shù)。模型預(yù)測控制MODELPREDICTIVECONTROL,MPC是一種對(duì)工業(yè)控制工程有著重大影響的先進(jìn)控制方法。鑄造過程是一種間歇過程,可使用MPC來對(duì)鑄造過程進(jìn)行控制。本文利用過程建模,對(duì)鋁合金輪轂低壓鑄造過程的控制方案進(jìn)行了研究,采用了模型預(yù)測控制這種先進(jìn)的控制方法,基于PROCAST和MATLAB軟件平臺(tái)離線開發(fā),免除了在運(yùn)營廠開發(fā)這樣一個(gè)系統(tǒng)的相關(guān)費(fèi)用。本文建立了輪轂的三維幾何模型及輪轂的三維有限元模型,采用PROCAST模擬了輪轂的充型凝固過程,預(yù)測鑄造周期中模具溫度的變化及液封缺陷的發(fā)生。本文開發(fā)了一個(gè)系統(tǒng),將PROCAST模擬轉(zhuǎn)化成一個(gè)帶通信功能的虛擬工業(yè)過程,在該過程中實(shí)現(xiàn)了過程數(shù)據(jù)和控制數(shù)據(jù)的讀?。瘜懭?;該系統(tǒng)通過一個(gè)PERL腳本實(shí)現(xiàn)單周期PROCAST模擬的重復(fù)運(yùn)行,模擬連續(xù)的循環(huán)過程。鑄造過程是一個(gè)間歇過程,可以很好地用狀態(tài)空間模型代表其過程輸入和輸出間的關(guān)系。N4SID是一種系統(tǒng)辨識(shí)方法,本文采用N4SID從鑄造過程的輸入輸出數(shù)據(jù)生成狀態(tài)空間模型。為了執(zhí)行系統(tǒng)辨識(shí),本文分別確定了低壓鑄造過程的過程變量、控制變量和前饋?zhàn)兞?;根?jù)輸入輸出數(shù)據(jù)生成了狀態(tài)空間模型。經(jīng)驗(yàn)證,該模型可以預(yù)測輪轂鑄造過程的近似輸入輸出。基于該模型,MPC控制器使用前饋?zhàn)兞靠梢灶A(yù)測干擾的影響,并計(jì)算出最佳的控制變量,在干擾傳播之前抵消其影響。為了優(yōu)化鑄造過程的閉環(huán)性能,本文對(duì)MPC控制器進(jìn)行了整定,定義了代價(jià)函數(shù)中的加權(quán)矩陣、預(yù)測時(shí)域和控制時(shí)域,并指定了控制變量的約束。本文通過MATLAB實(shí)現(xiàn)了MPC控制器的控制。為了確定在低壓鑄造過程上實(shí)施模型預(yù)測控制的效果,本文通過虛擬工業(yè)過程,在開環(huán)和閉環(huán)虛擬工業(yè)過程上分別應(yīng)用了三種相同的干擾情況,對(duì)該控制方案進(jìn)行評(píng)估。第一種干擾是斜坡金屬溫度干擾,模擬了工業(yè)過程中熔融金屬的溫度變化。第二種干擾是輪轂從模具中頂出后模具打開時(shí)問的長短變化。第三種情T
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簡介:西南交通大學(xué)碩士學(xué)位論文GPS工程控制網(wǎng)數(shù)據(jù)處理方法研究及軟件研制姓名王鵬申請學(xué)位級(jí)別碩士專業(yè)大地測量學(xué)與測量工程指導(dǎo)教師劉成龍20081201西南交通大學(xué)碩士研究生學(xué)位論文第1I頁____●●_______一一__L●_●__L_●●_一ABSTRACTTOOVERCOMETHELIMITATIONSTHATTHECURRENTDATAPROCESSINGMETHODSINGPSENGINEERINGCONTROLNETWORKCARLNOTMEETTHEACCURACYREQUIREMENTUNDERTHECONDITIONOFLARGERANGE,THISTHESISPRESENTSTHEDISCUSSIONANDINVESTIGATIONONTHEADJUSTMENTMETHODS,COORDINATETRANSFORMATIONMODELANDPROJECTIONDISTORTIONCAUSEDBYGPSCONTROLNETWORK’。FIRST,ITISILLUSTRATEDTHATFIVEMETHODSANDTHEIRFUNDAMENTALSFORGPSDATAADJUSTMENTANDCOORDINATETRANSFORMATIONMODELTHESEMETHODSINCLUDE3DCONSTRAINEDADJUSTMENTWITHRECTANGULARSPACECOORDINATESASUNKNOWNS,3DCONSTRAINEDADJUSTMENTWITHGEODETICCOORDINATESASUNKNOWNS,2DCONSTRAINEDADJUSTMENTWITHPLANEBASELINEVECTORSASOBSERVATIONS,2DCONSTRAINEDADJUSTMENTWITHPLANECOORDINATES’DIFFERENCESASVIRTUALOBSERVATIONSANDGPSDATAADJUSTMENTWITHONEPOINTANDONEDIRECTIONCONSTRAINEDTHEGPSENGINEERINGCONTROLNETWORKINACERTAININTERCITYPASSENGERDEDICATEDLINEISSELECTEDASDATASOURCETOVALIDATETHESEMETHODSSECONDLYBYANALYZINGTHEDISTORTIONCAUSEDBYGPSPROJECTION,SEVERALPROJECTIONMETHODSOFGPSCONTROLNETWORKAPPLIEDTOHIGHSPEEDRAILWAYAREDISCUSSEDTHESEMETHODSINCLUDEGAUSSPROJECTIONBASEDONARBITRARYCENTRALMERIDIANWITHGIVENHEIGHTDATUMANDOBLIQUEMERCATORPROJECTIONWITHTRANSVERSECYLINDERANDNORMALCYLINDERDERIVEDFROMOBLIQUECYLINDRICALPROJECTIONALSOTHETWOMETHODSAREAPPLIEDTOTHECPIGPSCONTROLNETWORKINACERTAINHI曲一SPEEDRAILWAYTHETESTINGRESULTUSINGTHETWOMETHODSISFURTHERCOMPAREDANDANALYZEDINTHETHESISBASEDOILTHEABOVEDISCUSSIONANDEXPERIMENTALRESULTANALYSIS,TWOMAJORCONCLUSIONSCANBEDRAWNINTHETHESISTHEFIRSTISTHATTHERIGOROUS3DCONSTRAINEDADJUSTMENTMETHODSARENECESSARYTOMEETTHEACCURACYREQUIREMENTINLARGERANGEGPSENGINEERINGCONTROLNETWORKTHESECONDISTHATTHEOBLIQUEMERCATORPROJECTIONISPREFERABLETOGAUSSPROJECTIONINTHECONSISTENCYBETWEENTHEPROJECTEDBASELINELENGTHANDTHATOFREALGROUNDTHEFORMERISMOREAPPLICABLEESPECIALLYINGPSCONTROLNETWORKOFROUTESHAPEDHI曲一SPEEDRAILWAY
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簡介:I摘要在能源緊缺與生活質(zhì)量高要求、高標(biāo)準(zhǔn)的今天,可持續(xù)發(fā)展的概念深入人心。隨著國家大力倡導(dǎo)節(jié)能減排、保護(hù)環(huán)境,電動(dòng)車輛的發(fā)展呈現(xiàn)出大好局勢。在電動(dòng)車輛的研究當(dāng)中,考慮到電機(jī)與電池的參與,使得其在驅(qū)動(dòng)與制動(dòng)時(shí),呈現(xiàn)出與傳統(tǒng)內(nèi)燃機(jī)汽車不同的一面。為此,電動(dòng)車輛的建模仿真、控制系統(tǒng)的設(shè)計(jì)以及能量的高效利用成為電動(dòng)車輛研究領(lǐng)域的熱點(diǎn)問題。同時(shí),道路交通網(wǎng)絡(luò)日趨完善,車輛自動(dòng)化、智能化性能的不斷提高,導(dǎo)致影響車輛的綜合行駛性能的因素越來越多,這也使得車輛的穩(wěn)定性與魯棒性研究成為車輛電控技術(shù)研究與開發(fā)中的熱點(diǎn)與難點(diǎn)。本文以某微型純電動(dòng)車輛為研究原型,從電動(dòng)車輛的結(jié)構(gòu)差異性出發(fā),基于車輛動(dòng)力學(xué),考慮到輪轂電機(jī)的工作特性、汽車的動(dòng)力性以及轉(zhuǎn)向制動(dòng)穩(wěn)定性,建立了電動(dòng)車輛的整車模型,分別從動(dòng)力性、制動(dòng)性、操縱穩(wěn)定性進(jìn)行了仿真。仿真結(jié)果與實(shí)際的車輛指標(biāo)較為吻合,說明所建的模型能夠在一定程度上表征電動(dòng)車輛,為電動(dòng)車輛的研究提供了模型保障。在車輛的轉(zhuǎn)向再生制動(dòng)研究中,通過分析車輛制動(dòng)力學(xué)、理想制動(dòng)力分配與法規(guī)要求,制定了電液聯(lián)合制動(dòng)控制策略、電機(jī)ABS滑??刂撇呗?,考慮到制動(dòng)能量回收、緊急制動(dòng)的車輪防抱死以及控制器的穩(wěn)定性、魯棒性,設(shè)計(jì)了轉(zhuǎn)向制動(dòng)穩(wěn)定性與再生制動(dòng)協(xié)調(diào)控制器,選取緊急制動(dòng)工況進(jìn)行了仿真。結(jié)果表明,控制器能夠很好的實(shí)現(xiàn)既定的緊急制動(dòng)的能量回收與防抱死控制,與經(jīng)典的PID控制相比,控制效果明顯改善。在車輛轉(zhuǎn)向制動(dòng)的Μ分析與綜合控制中,考慮到車輛轉(zhuǎn)向制動(dòng)的外界干擾因素、系統(tǒng)內(nèi)部結(jié)構(gòu)變化、以及傳感器噪聲等對(duì)系統(tǒng)的影響,具體的分析了影響轉(zhuǎn)向制動(dòng)魯棒性的因素,確立了加權(quán)函數(shù)與性能加權(quán)函數(shù),在此基礎(chǔ)上,建立了轉(zhuǎn)向制動(dòng)的標(biāo)稱數(shù)學(xué)模型與不確定性數(shù)學(xué)模型,從主動(dòng)安全控制的角度出發(fā),搭建了Μ分析綜合控制框架,對(duì)轉(zhuǎn)向制動(dòng)模型進(jìn)行了魯棒性分析,以橫擺角速度與側(cè)傾角速度為參考,設(shè)計(jì)了控制器,并針對(duì)控制器階數(shù)過高的問題,采取了降階處理。結(jié)果表明,在設(shè)計(jì)的Μ綜合控制器的控制下,系統(tǒng)的增益控制在理想的范圍以內(nèi),控制器的降階處理也使得控制誤差處于可以接受的范圍,從而實(shí)現(xiàn)了轉(zhuǎn)向制動(dòng)的Μ分析與綜合控制。關(guān)鍵詞關(guān)鍵詞電動(dòng)車輛,轉(zhuǎn)向,再生制動(dòng),穩(wěn)定性,Μ分析與綜合控制
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簡介:中圖分類號(hào)U44813U44813密級(jí)公開公開UDC本校編號(hào)碩士學(xué)位論文論文題目大跨鋼桁梁橋頂推施工過程受力分析及控制技術(shù)研究研究生姓名烜白寧學(xué)號(hào)02111880211188學(xué)校指導(dǎo)教師姓名王根會(huì)王根會(huì)職稱教授博導(dǎo)申請學(xué)位等級(jí)工學(xué)碩士學(xué)位專業(yè)橋梁與隧道工程論文提交日期20142014年5月論文答辯日期20142014年6月7日獨(dú)創(chuàng)性聲明本人聲明所呈交的學(xué)位論文是本人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作和取得的研究成果,除了文中特別加以標(biāo)注和致謝之處外,論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果,也不包含獲得蘭州交通大學(xué)蘭州交通大學(xué)或其他教育機(jī)構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對(duì)本研究所做的任何貢獻(xiàn)均已在論文中作了明確的說明并表示了謝意。學(xué)位論文作者簽名簽字日期年月日學(xué)位論文版權(quán)使用授權(quán)書本學(xué)位論文作者完全了解蘭州交通大學(xué)蘭州交通大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定。特授權(quán)蘭州交通大學(xué)蘭州交通大學(xué)可以將學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進(jìn)行檢索,并采用影印、縮印或掃描等復(fù)制手段保存、匯編以供查閱和借閱。同意學(xué)校向國家有關(guān)部門或機(jī)構(gòu)送交論文的復(fù)印件和磁盤。(保密的學(xué)位論文在解密后適用本授權(quán)說明)學(xué)位論文作者簽名導(dǎo)師簽名簽字日期年月日簽字日期年月日
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簡介:南京理工大學(xué)碩士學(xué)位論文大連港油品碼頭裝卸過程質(zhì)量控制與管理研究姓名張雪梅申請學(xué)位級(jí)別碩士專業(yè)工業(yè)工程指導(dǎo)教師馮虎田商劍飛20091108工程碩_I學(xué)位論文ABSTRACTDALIANPORTOILTERMINALCOMPANYISABRANCHCOMPANYUNDERDALIANPORTCORPORATIONLIMITED,AFTERBEINGCONSTRUCTEDANDDEVELOPEDFORMANYYEARS,ITHASBEENACOMPREHENSIVEMODEMPORTFORCRUDEOIL,REFINEDOILSANDLIQUEFIEDCHEMICALSCAPABLEOFLOADINGDISCHARGINGANDSTORINGTHECOMPETITIONBETWEENPORTSISVERYFIERCETHESEYEARS,ANDTHECARGOOWNERSAREALLCONCERNWITHTHEEFFICENCYANDQUALITYTHROUGHTHEPORT’SWORKINGPROCESSACCORDINGTOTHISCONDITION,ENHANCINGQUALITYCONTROLOFWORKINGPROCESS,ENSURINGTHETRANSPORTATIONANDSTORAGEQUALITYARETHEMOSTIMPORTANTPROBLEMWESHOULDSERIOUSLYFACEANDRESEARCHONTHISTHESISCONTAINSTHECONTENTSBELOWTHROUGHTHE‘‘CAUSEANDEFFECTPICTURES’’QUALITYCONTROLMETHODMAKESANALYSEOFOFLOADINGDISCHARGINGTECHNICSCONDITIONSATPRESENTPOINTOUTTHEKEYPROBLEMSOFE伍CIENCYCONTROLINPETROLEUMTRANSPORTATIONMAKESYSTEMICANALYSEOFTHEMATERIALPROBLEMSINTHEWORKINGPROCESSANDMAKERELATIVEMEASURESANDSUGGESTIONSTOIREPROVETHEE伍CENCYANDQUALITYOFPETROLEUMTRANSPORTATIONTHEDALIANWESTPACIFICPETROCHEMICALCOMPANYWEPECISAVIPCLIENTOFOURCOMPANYWEPOINTOUTTHEREISAINTERFUSIONDURINGTHECRUDEOILTRANSPORTATIONPROCESSTODEALWITHITWESET2TRANSPORTATIONPUMPSWHICHISINDEPENDENTCOMPAREWITHOTHERSBUTSOMEPROBLEMSHAPPENED,F(xiàn)OREXAMPLE,VIBRATIONANDELECTRICITYCONSUMPTIONETCTHEPUMPSANDTHETRANSPORTATIONHYDRAULICSYSTEMDON’TMATCH,WEESTABLISHAPIPELINESRESISTANCEMATHEMATICMODELANDCOLLECTASERIESACTUALDATASWHENUSINGTHEPUMPSIANALYSETHECAUSESOFTHESEABNORMALPROBLEMDURINGPUMPRUNNINGANDPOINTOUTTHEIMPROVEMENTMEASURESNOWWEHAVEUSEDTHEMTOIMPROVETHEPUMPCONDITION,WHENFINISHIMPROVEMENTITWILLENSURETHEWORKINGQUALITYCOMPLETELYINTHISTHESIS,IMAKEANALYSISOFTHECAUSEOFTHECRUDEOILINTERFUSIONACCORDINGTOTHEFACILITIES’CONDITIONOFCRUDEPRODUCTOILTRANSPORTATIONSYSTEMS,IALSOEXPROUDTHEIMPROVEMENTMEASURES,PROVEDBYACTUALAPPLICATION,THESEMEASURESAREVERYEFFECTIVETOAVOIDTHECRUDEOILINTERFUSIONANDPROTECTTHETRANSPORTATIONQUALITYINADDITIONTHROUGHANALYSISOFSOLIDIFICATIONPOINT,POURPOINT,VISCOSITYANDOTHERCRUDEOILPARAMETERS,IALSOMAKESCIENTIFICCALCULATIONSTOEDUCETHEECONOMICALTRANSPORTATIONTEMPERATUREOFEACHKINDOFCRUDEOILSOWECALLUSEITASASUITABLETEMPERATURESTANDARDOFCRUDEOILTRANSPORTATIONFINALLYMAKETHEWORKINGPROCESSEFFICENCYSAFETYANDLOWELECTRICITYCONSUMPTIONTHERESEARCHABOVECANMAKEGOODSUPPORTTOQUALITYCONTROLDURINGTRANSPORTATIONPROCESS,ITALSOESTABLISHEDACONSTANTLYIMPROVINGSYSTEMA,F(xiàn)ORONETHING,TOPROVIDEMOREKINDSOFSATISFYINGTRANSPORTATIONSERVICETOOURCUSTOMERS,SATISFYOURCUSTOMERS’DEMANDONDIVERSIFIEDTRANSPORTATIONSERVICE,F(xiàn)ORANOTHERTHING,TOIMPROVEOURCOMPANY’SCAPABILITYONUNITARYQUALITYMANAGEMENT,CONSTANTLYIMPROVEITSCOMPETITIONCAPABILITYINTHEHOTLYMARKETN
下載積分: 5 賞幣
上傳時(shí)間:2024-03-04
頁數(shù): 52
大小: 2.44(MB)
子文件數(shù):
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簡介:重慶大學(xué)碩士學(xué)位論文重型車AMT離合器起步過程綜合控制研究姓名余猛進(jìn)申請學(xué)位級(jí)別碩士專業(yè)機(jī)械電子工程指導(dǎo)教師劉振軍20090601英文摘要ABSTRACTATPRESENT。MANUALTRANSMILSSIONWITHSEVERALSHI舾ANDMECHANICALCLUTCHAREGENERALLYUSEDINDOMESTICHEAVYDUTYCOMMERCIALVEHICLESBECAUSEOFSEVERAL幽船OFTHETRANSMISSIONFREQUENTLYUPSHIFTANDDOWNSHIFT,BIGPOWEROFTHESHIFTOPERATIONANDCOORDINATEDMANIPULATIONOFTHETHROTTLEPEDAL,CLUTCHPEDALANDSHIFTHANDLE,THEYITSWILLMAKEMANYISSUES,F(xiàn)OREXAMPLESKILLEDMANIPULATIONSKILLSISBEENREQUIREMENTTOTHEDRIVERANDITWILLBEEASYFATIGUE,ATTHESAMETIMEITWILLBRINGUSASEVERETRAFFICSAFETYIFTHEMANUALTRANSMISSIONISREPLACEDBYAUTOMATEDMECHANICALTRANSMISSIONAMT,CLUTCHPEDALISCANCELEDANDAUTOMATEDJOINTPROCEDURALISREALIZEDTHEDIFFICULTYOFDRIVINGSKILLSANDINTENSITYOFDRIVINGOPERATIONSWILLBEREDUCED,ANDTHEPERFORMANCEANDTECHNOLOGYOFVEHICLEWILLBEIMPROVEDGREATLYINTHISPAPERCOMBINEDWITHTHECOMMITMENTTOSCIENCEANDTECHNOLOGYCOMMISSIONOFCHONGQINGMUNICIPALITYPLANSTOFOCUSONSCIENCEANDTECHNOLOGYRESEARCHPROJECT“THEDEVELOPMENTOFMACHINERYANDPRODUCTDEVELOPMENTOFDRIVESYSTEMOFHEAVYDUTYVEHICLEWITHAUTOMATEDMECHANICALTRANSMISSION,CLUTCHSYSTEMANDITSCONTROLOFHEAVYVEHICLESDURINGSTARTINGARERESEARCHEDDEEPLYTHERESEARCHCONTENTSARESHOWNASFOLLOWS£DESIGNANDDEVELOPANEWTYPEOFHYDRAULICCONTROLANDGASPOWERASSISTANCECLUTCHAUTOMATICCONTROLSYSTEM,BASEDONITSEQUIVALENTPHYSICALMODEL,ESTABLISHAMATHEMATICALMODELOFCLUTCHAUTOMATICCONTROLSYSTEM,SIMULATEANDANALYSISTHERESPONSECHARACTERISTICSOFTHESYSTEM;ATTHE戲ALLLETIMETAKINGINTOACCOUNTTHECLOSEDLOOPAUTOMATICCONTROLSYSTEMTHESPECIALCIRCUMSTANCESOFFAILUREOFTHECLUTCHOPENLOOPCONTROLMETHODSWERESTUDIEDANDTHEMETHODTOGETDUTYCYCLEOFLLIGHSPEEDSWITCHINGSOLENOIDVALVEISGIVENUNDERTHECONDITIONSOFOPENLOOP;ESTABLISHADYNAMICMATHEMATICALMODELOFTHECLUTCHDURINGSTARTING,ANALYSISCLUTCHPERFORMANCEINDICATORSANDRELATEDREQUIREMENTSOFITSCONTROL,STUDYTHESPEEDCONTROLMETHODOFCLUTCHENGAGEMENTINORDERTOFULLYREFLECTTHEINTENTIONOFDRIVERDURINGSTARTING,ANDUSEDOUBLELAYERFUZZYCONTROLMETHODTOESTABLISHCLUTCHENGAGEMENTMODELDURINGTHEINITIALSTAGEOFSLIDING;③ANALYSISTHEENGINESPEEDCONTROLTHEORYESTABLISHMATHEMATICALMODELOFTHEENGINE,DESIGNTHEELECTRONICTHROTTLECONTROLLEROFTHEENGINEDURINGSTARTINGTHEVEHICLE,THENESTABLISHENGINESPEEDCONTROLMODELBASEDONTHEABOVEMENTIONEDMETHOD,M
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 80
大?。?4.01(MB)
子文件數(shù):
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簡介:分類號(hào)UDC密級(jí)編號(hào)工學(xué)碩士學(xué)位論文AUV垂直面運(yùn)動(dòng)控制過程中自抗擾方法研究碩士研究生陳江指導(dǎo)教師施小成教授學(xué)位級(jí)別工學(xué)碩士學(xué)科、專業(yè)控制理論與控制工程所在單位自動(dòng)化學(xué)院論文提交日期2011年1月論文答辯日期2011年3月學(xué)位授予單位哈爾濱工程大學(xué)CLASSIFIEDINDEXU.D.CADISSERTATIONFORTHEDEGREEOFM.ENGRESEARCHOFAUVMOTIONCONTR01INVERTICALPLANBASEDONADRCCANDIDATESUPERVISORACADEMICDEGREEAPPLIEDFORSPECIALTYDATEOFSUBMISSIONDATEOF0RAIEXAMINATIONUNIVERSITYCHENJIANGPROF.SHIXIAOCHENGMASTEROFENGINEERINGCONTROLTHEORYANDCONTROLENGINEERINGJAN.2011MAR.201LHARBINENGINEERINGUNIVERSITY㈣9㈣6川3㈨3川5㈣0?2洲Y
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 82
大?。?2.9(MB)
子文件數(shù):
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簡介:插電式混合動(dòng)力汽車模式切換過程的平順性控制研究重慶大學(xué)碩士學(xué)位論文(學(xué)術(shù)學(xué)位)學(xué)生姓名尚陽指導(dǎo)教師秦大同教授專業(yè)車輛工程學(xué)科門類工學(xué)重慶大學(xué)汽車工程學(xué)院二O一五年五月THERIDECOMFTCONTROLOFPHEVDURINGDRIVINGMODETRANSFERPROCESSATHESISSUBMITTEDTOCHONGQINGUNIVERSITYINPARTIALFULFILLMENTOFTHEREQUIREMENTFTHEMASTER’SDEGREEOFENGINEERINGBYSHAUNSUPERVISEDBYPROFQINDATONGSPECIALTYVEHICLEENGINEERINGCOLLEGEOFAUTOMOBILEENGINEERINGOFCHONGQINGUNIVERSITYCHONGQINGCHINAMAY2015
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 80
大?。?2.6(MB)
子文件數(shù):
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簡介:項(xiàng)目管理過程控制和風(fēng)險(xiǎn)管理在加油卡項(xiàng)目中的應(yīng)用APPLICATIONSOFPROJECTMANAGEMENTPROCESSCONTROLANDRISKMANAGEMENTINGASCARD學(xué)科專業(yè)項(xiàng)目管理研究生李洪指導(dǎo)教師沈江教授企業(yè)導(dǎo)師于慶軍高工天津大學(xué)管理與經(jīng)濟(jì)學(xué)部二零一零年十月摘要進(jìn)入二十一世紀(jì)以來,我國機(jī)動(dòng)車數(shù)量增長迅猛、能源消耗日益加劇,中國成品油銷售巨頭們相繼開始建設(shè)加油卡項(xiàng)目。通過加油卡項(xiàng)目的實(shí)施,解決了自身面臨的管理困境,為油品零售企業(yè)帶來了良好的經(jīng)濟(jì)效益和社會(huì)效益。從項(xiàng)目管理學(xué)科的角度看,項(xiàng)目管理在各工程領(lǐng)域中的應(yīng)用,一直是國內(nèi)外眾多專家和工程管理高層研究的熱點(diǎn)和重點(diǎn),而項(xiàng)目管理在國內(nèi)加油卡項(xiàng)目的應(yīng)用和實(shí)踐,還是比較新的課題。作者在查閱大量書籍、研究文獻(xiàn)的基礎(chǔ)上,以加油卡項(xiàng)目為實(shí)例,論述了在加油卡領(lǐng)域項(xiàng)目管理所需要重點(diǎn)關(guān)注的環(huán)節(jié),分析了加油卡項(xiàng)目實(shí)際執(zhí)行過程中的重點(diǎn)環(huán)節(jié)采購控制、質(zhì)量控制、進(jìn)度控制、范圍變更控制、收尾控制的過程控制管理,并重點(diǎn)分析了風(fēng)險(xiǎn)管理在加油卡項(xiàng)目中的實(shí)際應(yīng)用,在分析和研究過程中,采用了S曲線法、戴明環(huán)、風(fēng)險(xiǎn)量等級(jí)表等項(xiàng)目管理方法。最后結(jié)合國內(nèi)外主流的項(xiàng)目管理的理論,回顧了項(xiàng)目管理在加油卡項(xiàng)目中所產(chǎn)生的積極作用,總結(jié)了與項(xiàng)目管理理論相悖離的做法而產(chǎn)生的負(fù)面影響和經(jīng)驗(yàn)教訓(xùn)。通過對(duì)加油卡項(xiàng)目具體案例的分析,并結(jié)合作者多年的項(xiàng)目管理經(jīng)驗(yàn)提出,項(xiàng)目管理的應(yīng)用既要堅(jiān)持基本原則也要有靈活性和適應(yīng)性,并希望本文的寫作能夠?yàn)槲覈?xiàng)目管理應(yīng)用進(jìn)一步豐富做出一點(diǎn)點(diǎn)貢獻(xiàn)。關(guān)鍵詞項(xiàng)目管理加油卡過程控制風(fēng)險(xiǎn)管理
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 52
大?。?1.8(MB)
子文件數(shù):
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簡介:分類號(hào)UDC博士學(xué)位論文密級(jí)郴州地區(qū)殘坡積土工程邊坡過程穩(wěn)定性研究及控制RESEARCHONCHENZHOUC011UVIALANDRESIDUALSOI’LSLOPE’SPROCESSSTABILITYANDPROCESSCONTROL作者姓名學(xué)科專業(yè)學(xué)院系、所指導(dǎo)教師陳賓地質(zhì)工程地球科學(xué)與信息物理學(xué)院張可能教授蹴席投中南大學(xué)2010年11月原創(chuàng)性聲明本人聲明,所呈交的學(xué)位論文是本人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知,除了論文中特別加以標(biāo)注和致謝的地方外,論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果,也不包含為獲得中南大學(xué)或其他單位的學(xué)位或證書而使用過的材料。與我共同工作的同志對(duì)本研究所作的貢獻(xiàn)均已在論文中作了明確的說明。作者簽名鏈~窶日期2旦坦年衛(wèi)月盟日學(xué)位論文版權(quán)使用授權(quán)書本人了解中南大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定,即學(xué)校有權(quán)保留學(xué)位論文并根據(jù)國家或湖南省有關(guān)部門規(guī)定送交學(xué)位論文,允許學(xué)位論文被查閱和借閱;學(xué)??梢怨紝W(xué)位論文的全部或部分內(nèi)容,可以采用復(fù)印、縮印或其它手段保存學(xué)位論文。同時(shí)授權(quán)中國科學(xué)技術(shù)信息研究所將本學(xué)位論文收錄到中國學(xué)位論文全文數(shù)據(jù)庫,并通過網(wǎng)絡(luò)向社會(huì)公眾提供信息服務(wù)。
下載積分: 5 賞幣
上傳時(shí)間:2024-03-04
頁數(shù): 142
大?。?5.97(MB)
子文件數(shù):
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簡介:天津理工大學(xué)碩士學(xué)位論文FIDIC合同條件下基于過程控制思想的國際工程索賠機(jī)會(huì)識(shí)別研究姓名劉鵬申請學(xué)位級(jí)別碩士專業(yè)技術(shù)經(jīng)濟(jì)及管理指導(dǎo)教師尹貽林20100101ABSTRACTDUETOTHECHARACTERISTICSOFCOMPLEX,LONGTERM,DYNAMICCIRCUMSTANCEOFINTERNATIONALPROJECT,THEREALEMANYINTERFERENTIALFACTORSANDUNPREDICTABLERISKSWHENCARRYINGOUTAPROJECT,WHICHLEADSTOLOTSOFCLAIMSTOCOMPANIESTHOSEINEVITABLEPROBLEMSDIRECTLYINFLUENCECONTRACTORS’PROFITSANDSUPERVISORYABILITIESTHEREFORE,ITISVERYIMPORTANTTOIDENTIFYACCURATELYOPPORTUNITYOFCLAIMSTOCONTRACTORSINTIME,WHICHCOULDHELPTHEMTOGRASP_THEOPPORTUNITYOFCLAIMSANDTHENFIGUREOUTHOWTESOLVETHESEPROBLEMSTHISRESEARCHISBASEDONFIDICCONSTRUCTIONCONTRACTCONDITIONSOF1999;AUTHORANALYZESTHECLAUSESINTHEFIDICCONTRACTTHATRELATESTOCLAIMS,WHICHESPECIALLYEMPHASESONSOMECLAUSESTHATCONTRACTORSCOULDCLAIMFORCOMPENSATIONBYANALYZINGTHESECLAUSES,THEAUTHORPUTSFORWARDTHEKEYPOINTOFEVERYCLAUSETOMAKETHECONTRACTORSKNOWHOWTOMANAGECLAIMSFURTHERMORE,THEAUTHORPOINTSOUTTHEOPPORTUNITYOFPOTENTIALCOUNTERCLAIMWHENTHEWHOLEPROJECTISCARRIEDOUTBYIDENTIFYINGANDANALYZINGTHERISKSOFCLAIMSDURINGTHEEARLYSTAGEOFBIDINGFORAPROJECTANDSIGNINGACONTRACT,INORDERTOPROVIDEUSEFULRESOURCESANDREFERENCESTOCONTRACTORSTOCOMPLETETHETASKOFRECOGNIZINGTHECLAIMSINTHEFUTUREBESIDES,BYUTILIZINGANALYSISOFCONTRACT,EVENT,PROCESSANDCOSTTODISCERNANDANALYZETHECONSTRUCTION,COMPLETIONANDCLAIMSOPPORTUNITYOFPROJECTANDESTABLISHINGASETOFRECOGNITIONPROCESSCONTROLLINGMODELOFCONTRACTORSCLAIMSOPPORTUNITYUNDERTHEGUIDANCEOFCONTROLLINGPROCESSIDEOLOGYTHEMANAGEMENTLEVELOFCONTRACTORSCLAIMSANDTHEEFFICIENCYOFPROCESSINGCLAIMSWOULDBEIMPROVEDANDCONTRACTORSOPTIMALCLAIMSOPPORTUNITYWOULDNOTBEAVOIDEDNOWADAYS,BECAUSETHECOMPETITIONINTHEINTERNATIONALPROJECTMARKETISVERYFIERCE,CONTRACTORSCOULDADOPTCLAIMOPPORTUNITYIDENTIFICATIONPROCESSCONTROLLINGMODELTOIDENTIFYANDANALYZEACCURATELYTHEOPPORTUNITYOFCLAIMSWHENCARRYINGOUTAPROJECTINTIMETOIMPROVETHEEFFICIENCYOFMANAGINGCLAIMSANDTOAVOID_MISSINGTHEBESTTIMETOCLAIMFORCOMPENSATIONKEYWORDSINTERNATIONALCONSTRUCTIONPROJECT,F(xiàn)IDICCONSTRUCTIONCONTRACTCONDITIONS,PROCESSMETHOD,IDENTIFICATIONOFCLAIMSOPPORTUNITY
下載積分: 5 賞幣
上傳時(shí)間:2024-03-04
頁數(shù): 68
大小: 5.67(MB)
子文件數(shù):
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簡介:論文題目基于過程能力分析的C201汽車制動(dòng)器加工質(zhì)量控制研究專業(yè)機(jī)械工程碩士生謝文靜(簽名)指導(dǎo)教師魏娟校內(nèi)(簽名)陳文全校外(簽名)摘要支架是汽車盤式制動(dòng)器的部件之一,由于支架結(jié)構(gòu)單薄,所以在對(duì)它進(jìn)行機(jī)械加工過程中,夾具的裝夾壓緊和刀具的切削力都容易導(dǎo)致其變形,造成加工尺寸不合格。其中支架安裝面厚度尺寸超差會(huì)導(dǎo)致制動(dòng)器總成中的制動(dòng)塊和制動(dòng)盤間隙不正確出現(xiàn)制動(dòng)拖磨現(xiàn)象,給客戶造成嚴(yán)重不良影響。以支架安裝面厚度尺寸的過程能力為研究對(duì)象,基于過程能力分析思想,利用數(shù)理統(tǒng)計(jì)原理,借助于MINITAB軟件,在實(shí)驗(yàn)確定測量系統(tǒng)可靠性的基礎(chǔ)上,尋找影響支架安裝面厚度尺寸的主要因素為支架大圓弧平面度和加工該道工序所使用夾具定位面的可靠性,且分析驗(yàn)證了這兩者與安裝面厚度尺寸存在相關(guān)性。針對(duì)毛坯定位面和加工銷孔安裝孔夾具對(duì)支架制造造成的影響,根據(jù)經(jīng)驗(yàn)對(duì)它們進(jìn)行改進(jìn),然后再驗(yàn)證改進(jìn)的效果,結(jié)果發(fā)現(xiàn)對(duì)毛坯定位面和加工銷孔安裝孔工序的改進(jìn),就足以將支架安裝面厚度尺寸的過程能力提升到理想范圍內(nèi)。研究證明通過過程能力分析的改進(jìn)方式是有效的。利用過程能力分析和數(shù)理分析來確定影響產(chǎn)品質(zhì)量的主要因素,再有針對(duì)性的實(shí)施改進(jìn)措施,這種方式具有科學(xué),高效,低成本的優(yōu)點(diǎn),非常適應(yīng)現(xiàn)代大批量生產(chǎn)的要求,同時(shí),這種方法也可以對(duì)一些類似問題起到一個(gè)經(jīng)驗(yàn)總結(jié)和預(yù)防的作用。關(guān)鍵詞制動(dòng)器,過程能力,樣本,質(zhì)量控制,工裝研究類型應(yīng)用基礎(chǔ)研究SUBJECTSTUDYBASEDONANALYSISOFPROCESSCAPABILITYFTHEC201AUTOMOBILEBRAKEPROCESSINGQUALITYCONTROLSPECIALTYMECHANICALDESIGNTHEYNAMEXIEWENJING(SIGNATURE)INSTRUCTWEIJUAN(SIGNATURE)CHENWENQUAN(SIGNATURE)ABSTRACTCARRIERISONEOFTHEPARTSOFAUTOMOBILEDISCBRAKEBECUSEOFITSFRAMEWKISTHINCLAMPINGFIXTURECLAMPINGCUTTINGTOOLSFCEAREEASYTOCAUSETHEDEFMATIONINITSMACHININGPROCESSTHATCAUSEDBYPROCESSINGSIZEISNOTQUALIFIEDPOQUALITYSIZEOFCARRIERMOUNTINGSURFACETHICKNESSWILLCAUSETHEBRAKEBLOCKTHEBRAKEDISCBRAKEASSEMBLYCLEARANCEINCRECTTHATLEADTOAPPEARBRAKEDRAGGROUNDPHENOMENONIT’SSERIOUSADVERSEIMPACTFOURCLIENTSASTHERESEARCHOBJECTWITHTHETHICKNESSOFTHECARRIERMOUNTINGSURFACESIZEOFPROCESSCAPABILITYBASEDONTHEPROCESSCAPABILITYANALYSISUSINGTHEMATHEMATICALSTATISTICSPRINCIPLEWITHTHEAIDOFMINITABSOFTWAREBASEDONTHEEXPERIMENTTODETERMINETHERELIABILITYOFMEASUREMENTSYSTEMTOFINDTHEMAINFACTSINFLUENCINGARETHETHICKNESSOFTHECARRIERMOUNTINGSURFACESIZEFTHECARRIERFLATNESSCIRCLEPROCESSINRELIABILITYOFFIXTURELOCATINGANALYSISCRELATIONOFTHEBOTHTHESIZEOFMOUNTINGSURFACETHICKNESSFTHEWKBLANKSURFACEPROCESSINGPINHOLEINSTALLATIONHOLEFIXTURETHEEFFECTSONTHECARRIERACCDINGTOTHEEXPERIENCEOFTHEIRIMPROVEMENTTHENVERIFYTHEIMPROVEMENTEFFECTFOUNDTHATIMPROVINGTHEROUGHLOCATIONPINHOLEMOUNTINGHOLESFMANUFACTURINGWASENOUGHTOINSTALLTHESTENTSURFACETHICKNESSWITHINTHESCOPEOFTHEPROCESSTOIMPROVETHECAPACITYOFIDEALSIZETHATPROVEDBYIMPROVEMENTOFPROCESSCAPABILITYANALYSISMETHODISEFFECTIVEPROCESSCAPABILITYANALYSISMATHEMATICALANALYSISISUSEDTODETERMINETHEMAINFACTSINFLUENCINGTHEPRODUCTQUALITYAIMATIMPLEMENTATIONOFIMPROVEMENTMEASURESTHISWAYHASTHESCIENTIFICEFFICIENTLOWCOSTADVANTAGESVERYADAPTTOTHEREQUIREMENTOFMODERNMASSPRODUCTIONATTHESAMETIMETHISMETHODCANALSOBEOFSOMESIMILARPROBLEMSHAVETHEEFFECTOFAEXPERIENCESUMMARYPREVENTION
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 55
大小: 2.66(MB)
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簡介:分類號(hào)U41233密級(jí)單位代碼學(xué)號(hào)10618墨廑交通戈謦碩士學(xué)位論文論文題目瀝青路面壓實(shí)過程控制研究RESEARCHONTHECONTROLOFG壁坐壁壘竺蘭I望G壘璺壁壘璺叢壘∑竺坐竺翌蘭研究生姓名高源導(dǎo)師姓名、職稱田波研究員申請學(xué)位門類T堂于專業(yè)名稱道路與鐵道工程論文答辯日期2013年06月06日學(xué)位授予單位重慶交通大學(xué)答辯委員會(huì)主席凌天清評(píng)閱人凌天清2013年06月郝增恒摘要在公路施工建設(shè)過程中,壓實(shí)成型是瀝青路面旌工過程中的關(guān)鍵工藝環(huán)節(jié),直接關(guān)系到瀝青路面的使用性能和使用壽命,壓實(shí)不足和壓實(shí)質(zhì)量控制不嚴(yán)將導(dǎo)致混合料體積參數(shù)發(fā)生變化,造成混凝土空隙率、壓實(shí)度、抗壓、抗拉與抗剪強(qiáng)度等物理力學(xué)性能指標(biāo)的改變,是導(dǎo)致瀝青路面發(fā)生水損害的重要原因。因此,改善壓實(shí)工藝,增強(qiáng)路面壓實(shí)過程控制,保證混合料充分壓實(shí)是提高瀝青路面建設(shè)質(zhì)量的關(guān)鍵。瀝青路面施工質(zhì)量影響因素較多,需對(duì)其中影響瀝青路面質(zhì)量指標(biāo)較大的指標(biāo)進(jìn)行篩選,并對(duì)這些關(guān)鍵指標(biāo)進(jìn)行重點(diǎn)監(jiān)控,以保證瀝青路面質(zhì)量。針對(duì)這一問題,本文調(diào)查了瀝青路面在壓實(shí)施工過程和壓實(shí)過后產(chǎn)生的病害,分析了不同的因素對(duì)瀝青路面病害產(chǎn)生的影響,針對(duì)每種因素,定性的提出了改善壓實(shí)的技術(shù)措旋。并得出熱拌瀝青混合料施工壓實(shí)過程中的溫度與有效時(shí)間控制是保證路面面層施工質(zhì)量的關(guān)鍵環(huán)節(jié),所以確定瀝青混合料合理的拌和與壓實(shí)溫度至關(guān)重要。改性瀝青混合料拌和與壓實(shí)溫度確定,常采用廠商推薦的經(jīng)驗(yàn)值或鋪筑試驗(yàn)路,而不能像普通基質(zhì)瀝青混合料采用布氏粘溫曲線來確定,因?yàn)橛刹际险硿厍€確定的壓實(shí)溫度較高,會(huì)導(dǎo)致改性瀝青高溫老化和污染氣體的揮發(fā),同時(shí)也不便于現(xiàn)場施工。本文采用布氏粘度計(jì),通過改變布氏粘度計(jì)剪切速率,對(duì)該種改性瀝青膠結(jié)料確定一個(gè)合理的剪切速率進(jìn)行布氏粘度試驗(yàn),最后繪制粘溫曲線,得出拌和與壓實(shí)的合理溫度;同時(shí)借用水泥膠砂扭矩?cái)嚢铏C(jī)原理,研發(fā)瀝青混合料扭矩?cái)嚢铏C(jī),研究了不同瀝青混合料在不同溫度下攪拌時(shí)扭矩關(guān)系,通過扭矩來反映瀝青混合料工作性,得出一個(gè)溫度區(qū)間作為壓實(shí)溫度,這個(gè)方法對(duì)由改變剪切速率得出的瀝青混合料壓實(shí)溫度進(jìn)行二次修正,最終確定一個(gè)合適的碾壓溫度。本研究研發(fā)了瀝青混合料拌和站實(shí)時(shí)監(jiān)控系統(tǒng)和瀝青路面壓實(shí)實(shí)時(shí)監(jiān)控系統(tǒng),實(shí)時(shí)采集需要控制的技術(shù)參數(shù),同時(shí)采用無損檢測技術(shù)PQI測定路面壓實(shí)度,溫度傳感器實(shí)時(shí)采集路面溫度繪制溫度圖,及時(shí)解決溫度較低路面區(qū)域難于壓實(shí)的問題,同時(shí)實(shí)時(shí)采集的數(shù)據(jù)為瀝青路面的離析判斷和碾壓質(zhì)量控制提供了新的實(shí)時(shí)監(jiān)測手段,給予業(yè)主對(duì)于施工單位管理提供了一種方法,提高瀝青路面壓實(shí)施工過程控制水平,變事后控制為過程控制,保證瀝青路面的施工質(zhì)量,延長瀝青路面的使用壽命,有效減少瀝青路面早期破壞現(xiàn)象,降低返修次數(shù),提高高速公路運(yùn)營的綜合效益,關(guān)鍵詞瀝青路面,壓實(shí),溫度,施工控制
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 79
大?。?19.66(MB)
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簡介:東北大學(xué)碩士學(xué)位論文全球定位系統(tǒng)在工程控制網(wǎng)中的應(yīng)用研究姓名張凱申請學(xué)位級(jí)別碩士專業(yè)結(jié)構(gòu)工程指導(dǎo)教師劉斌200131ABSTRACTGLOBALPOSITIONINGSYSTEMGPSBASBEENAPPLIEDFARANDWIDE,NOTLIMITEDTOACCOMPLISHTHECOMMONUSEDSTATICPOSITIONING,NAVIGATINGANDTIMINGFUNCTION,BUTALSOMAKESAFIGUREINTHEFIELDOFTHEMETEOROLOGYSCIENCE,TILECALAMITYMONITORINGTHEAPPLICATIONRESEARCHATTHEGPSTECHNOLOGYINTEGRATIONWITHRSANDGISHASSPREADDIFFUSELYILLAMOREPRACTICALANDMEANINGFUJFIELDFILEPRODUCTIONANDSOCIAJLJRC.ASFORTHEESTABLISHMENTOFTHEENGINEERINGCONTROLNETWORK,IT’SMEHIGHTIMETOENCOUNTERWIULTHECENTRELPOINTS.WHICHISBROKENORMISSEDDURINGTHECOARSEOFTHECENTRELSURVEYING.MOREOVER,IFITSREQUIREDTOSETUPASMALLSCALEPRECISIONENGINEERINGCONTROLNETWORKWITHINTHERANGEOF60KM2ASAEXAMPLE,ITWOULDBEVERYHARDTOACCOMPLISHTHEWORKWITHCONVENTIONALMETHODBECAUSEOFTHEPRECISIONANDTHEERRORACCUMULATIONOFTHECONTROLPOINTS,WHICHAREOFTHEACERTAINNUMBERANDHIGHERPRECISIONORORDER,UNDERACERTAINFINANCIALANDTEMPORALDESKE.WITHTHEINCREASINGLYEXTENSIONOFTHEGPSAPPLICATIONRANGEINOURNATION,IT’SANECESSITYTOREINFORCETHEGPSRECEIVERTESTANDDISCUSSTHEAPPLICATIONPROBLEMTOTHEKTKTECHNIQUETHESETWOARETILEKERNELTASKTOESTABLISHALFIGHPRECISIONTESTINGNETWORKANDUSETHERTKMETHODTOSETUPALOWERORDERCONTROLNETWORKFORENGINEERINGINARELATIVELYSHORTTIME.TIFFSPAPERRESOLVESTHEPROBLEMABOVE,THROUGHACCOMPLISHINGESTABLISHINGTHEGPSTESTNETWORKFORLIAONINGMAPPINGANDSURVEYINGBUREAUANDTHETESTFORLFIGHWAYQUALITYCHECKUP,ATTEMPTTOADOPTTHEHIGHPRECISIONGPSANALYSISSOFTWAREGAMIT/GLOBKTOPROCESSTHEOBSERVABLEDATAANDOBTAINTILEHIGHPRECISIONRCSULTSFORTHETESTNETWORK;ASWELLASATTEMPTTOAPPLYKTKTECHNIQUETOSURVEYANDSETUPANETWORKAFTERINSITETESTANDTHEANALYSISANDCOLLECTIONOFTILEDATAMATERIAL,WHENITSNEEDEDTOGETCORRESPONDENEEPRECISIONCONTROLNETWORK;ANDFISHESOUTARELATIVELYFEASIBLEMETHODFORGETTINGAHIGHPRECISIONENGINEERINGCONTROLNETWORKWITHTILEHELPOFTILEPRECISIONANALYSISSOFTWARE,PRECISIONEPHEMERISANDGLOBALTRACINGSTATIONTOESTABLISHAHIGHPRECISIONCONTROLNETWORKANDOBTAHIHIGHPRECISIONPOSITIONINGRESULT,WHICH“,VIIIPROVIDEARELIABLEMETHODANDMEASUREAPPLYINGTHEHIGHPRECISIONGPSPOSITIONINGTECHNIQUETOTHEPRECISIONCONTROLNETWORKFORTHEPRECISIONPROJECT,MONITORINGTHEGROUNDSETTLEMENTINCITIES,DIGGINGSANDOILFIELD,ANDTHEDISPLACEMENTTOTILEPILE,THEDAM,ANDMAKINGTMMELRUNF11ROUGHSURVEYING,ETE;INADDITION,RESEARCHESANDANALYZESTHEREACHEDPRECISIONFORAPPLYINGRTKTECHNIQUETOSETUPSMALLSCALECENTRELNETWORKQUICKLY.RTKHASBEENAPPLIEDSUCCESSFULLYTOCHECKTHEMIDLINEFORTILEHIGHWAYFROMP砌INTOHAICHANGANDTHEINVESTIGATINGSURVEYFORTHECAPACITYINCREMENTOFTHESILITOUKOUMENRESERVOIR,OBTAININGSOMEECONOMICBENEFIT.WLFFCHWILLPROVIDEACOULDBEREFERENCEDMETHODANDSPECIFICATIONTOTHICKENTHEMAPPINGCONTROLPOINT,ANDGETALL
下載積分: 5 賞幣
上傳時(shí)間:2024-03-05
頁數(shù): 79
大?。?2.53(MB)
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