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《速高列車受電弓結(jié)構(gòu)及動(dòng)力學(xué)的參數(shù)優(yōu)化設(shè)計(jì)--本科畢業(yè)設(shè)計(jì).doc》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、蘭州交通大學(xué)畢業(yè)設(shè)計(jì)(論文)高速列車受電弓結(jié)構(gòu)及動(dòng)力學(xué)參數(shù)優(yōu)化設(shè)計(jì)高速列車受電弓結(jié)構(gòu)及動(dòng)力學(xué)參數(shù)優(yōu)化設(shè)計(jì)摘要發(fā)展高速鐵路是鐵路現(xiàn)代化建設(shè)的必然趨勢(shì)。而高速列車主要采用電力牽引,高速列車必須在高速運(yùn)行條件下可靠地從接觸網(wǎng)上取得電能,否則將影響列車運(yùn)行和電氣驅(qū)動(dòng)系統(tǒng)的性能。隨著既有線的提速改造和高速客運(yùn)專線的加快建設(shè),弓網(wǎng)系統(tǒng)的問(wèn)題日益彰顯。本文從提高受電弓的運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)性能以改善弓網(wǎng)關(guān)系,提高受流質(zhì)量的角度出發(fā),主要完成了以下內(nèi)容:建立了受電弓非線性數(shù)學(xué)模型,并把非線模型線性化,利用等效剛度對(duì)接觸網(wǎng)特性進(jìn)行模擬,從而建立了弓網(wǎng)耦合數(shù)學(xué)模型。借鑒試驗(yàn)結(jié)果,獲得實(shí)驗(yàn)室內(nèi)受電弓弓頭的歸算質(zhì)量
2、、剛度和阻尼等參數(shù)。試驗(yàn)結(jié)果表明受電弓的框架歸算質(zhì)量和阻尼并不是常數(shù),而是隨著升弓高度的變化而變化的量值。通過(guò)對(duì)受電弓/接觸網(wǎng)耦合振動(dòng)模型的分析,用MATLAB語(yǔ)言編制了計(jì)算程序,對(duì)受電弓各個(gè)動(dòng)態(tài)參數(shù)以接觸力的不均勻系數(shù)作為目標(biāo)分別進(jìn)行了優(yōu)化。結(jié)果表明,優(yōu)化后接觸力的波動(dòng)變得更小。關(guān)鍵詞:受電弓;接觸網(wǎng);受流質(zhì)量;動(dòng)態(tài)參數(shù);優(yōu)化設(shè)計(jì)III蘭州交通大學(xué)畢業(yè)設(shè)計(jì)(論文)高速列車受電弓結(jié)構(gòu)及動(dòng)力學(xué)參數(shù)優(yōu)化設(shè)計(jì)AbstractHigh-speedrailwayisaninevitabletrendoftherailwaymodernizationconstruction.Andhigh-spe
3、edtrainmainlyadoptselectrictraction.Thepantographmustobtainelectricpowerdependably,whichcaninfluencethetrainrunningandperformanceofelectricdrivesystem.Theseriousproblemofpantograph-catenarysystemisobviousaftertherailwayreconstructionforspeedupgradingandtheconstructionofhigh-speeddedicatedpasseng
4、errailwayinChina.Fromtheaspectsofchangingtherelationshipofpantographandcatenaryimprovingthecurrentcollectingperformance,thefollowingmainaspectsarediscussedinthesis:Thenonlinearmathematicalmodelofthepantographistakenintoaccount,andbylinearizingthismodelandsimulatingthecharactersofcatenarywithequi
5、valentstiffness,thepantographandcatenarycoupledmodelisgained.Throughexperimentthepapergainsthenumericalvalueofequivalentmassanddampandeffectoftheheadofthepantographandinadditionitisprovedtheequivalentmassanddampoftheframeofthepantographarevariablewiththeheightofthepantograph.Byanalyzingthatmodel
6、andwritingtheprogramwithMATLABlanguage,theparametersofthepantographareoptimizedwiththeunevencontactforcecoefficientsasthegoalfunction.FromtheresultitCanbeseenthatthefluctuationofthecontactpressurebecomesmuchsmallerthanbeforeafteroptimization.Keywords:pantograph;catenary;qualitiesofcollectingcurr
7、ent;dynamicparameters;optimizationmethodsIII蘭州交通大學(xué)畢業(yè)設(shè)計(jì)(論文)高速列車受電弓結(jié)構(gòu)及動(dòng)力學(xué)參數(shù)優(yōu)化設(shè)計(jì)目錄1.緒論11.1引言11.2國(guó)內(nèi)外的研究現(xiàn)狀及發(fā)展趨勢(shì)31.3本論文的研究?jī)?nèi)容和方法52.受電弓模型的建立與分析62.1受電弓模型簡(jiǎn)介62.2受電弓運(yùn)動(dòng)模型的建立72.2.1幾何運(yùn)動(dòng)關(guān)系112.2.2速度關(guān)系132.3受電弓線性化模型的建立173.受電弓動(dòng)態(tài)參數(shù)選取193.1引言193.2