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《基于虛擬現(xiàn)實(shí)的汽車(chē)平順性仿真試驗(yàn)系統(tǒng)及其關(guān)鍵技術(shù)研究》由會(huì)員上傳分享,免費(fèi)在線(xiàn)閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、浙江大學(xué)博士學(xué)位論文基于虛擬現(xiàn)實(shí)的汽車(chē)平順性仿真試驗(yàn)系統(tǒng)及其關(guān)鍵技術(shù)研究姓名:雷良育申請(qǐng)學(xué)位級(jí)別:博士專(zhuān)業(yè):機(jī)械制造及其自動(dòng)化指導(dǎo)教師:周曉軍20051101浙江大學(xué)博七學(xué)位論史第五章進(jìn)行了汽車(chē)平順性仿真試驗(yàn)的虛擬樣機(jī)技術(shù)研究。首先介紹了ADAMS軟件模塊及其分析和計(jì)算方法、虛擬樣機(jī)建模仿真的基本過(guò)程和建立參數(shù)化多體模型的基本步驟。在ADAMS/View環(huán)境下,創(chuàng)建了某小汽車(chē)的整車(chē)97自由度虛擬樣機(jī)模型;研究了汽車(chē)在隨機(jī)路面的激勵(lì)下,垂直方向的激勵(lì)、改變載荷、改變彈簧的剛度和前懸架結(jié)構(gòu)參數(shù)優(yōu)化等對(duì)整車(chē)平順性的影響。通過(guò)組裝ADAMS/Car模塊里現(xiàn)成的一些子模塊構(gòu)建了某小汽車(chē)虛擬樣機(jī)模型,
2、在隨機(jī)路面和發(fā)動(dòng)機(jī)的聯(lián)合激勵(lì)下,對(duì)整車(chē)虛擬樣機(jī)模型進(jìn)行了平順性仿真試驗(yàn),試驗(yàn)結(jié)果表明,發(fā)動(dòng)機(jī)激勵(lì)對(duì)汽車(chē)(尤其對(duì)高速行駛汽車(chē))的平順性有一定的影響。第六章是基于虛擬現(xiàn)實(shí)的汽車(chē)平順性仿真試驗(yàn)系統(tǒng)開(kāi)發(fā)。首先介紹了系統(tǒng)結(jié)構(gòu)和仿真流程,對(duì)汽車(chē)平順性虛擬試驗(yàn)場(chǎng)景進(jìn)行了層次化虛擬場(chǎng)景結(jié)構(gòu)設(shè)計(jì)和汽車(chē)平順性虛擬試驗(yàn)系統(tǒng)對(duì)象類(lèi)設(shè)計(jì)。研究了汽車(chē)平順性虛擬試驗(yàn)環(huán)境建模和交互、數(shù)據(jù)接口等問(wèn)題。開(kāi)發(fā)了面向視景仿真的汽車(chē)平順性虛擬試驗(yàn)的桌面VR原型系統(tǒng),劃分了系統(tǒng)層次結(jié)構(gòu),介紹了系統(tǒng)的軟硬件基本配置,設(shè)計(jì)了系統(tǒng)用戶(hù)操作界面,實(shí)現(xiàn)了汽車(chē)平順性虛擬試驗(yàn)要求。第七章對(duì)全文的工作進(jìn)行了總結(jié),對(duì)下一步待開(kāi)展的工作作了展望。關(guān)鍵詞
3、:虛擬現(xiàn)實(shí),虛擬樣機(jī),虛擬環(huán)境,虛擬試驗(yàn),汽車(chē)平順性,振動(dòng),路面譜,隨機(jī)激勵(lì),小波分析,一體化仿真,動(dòng)力學(xué)分析I●浙江大學(xué)博f哮位論文AbstractRidecomfortisoneoftheleadingperformancesonmodemvehicle.Inordertoevaluatethevehicleridecomforteffectively,theproject“Theresearchontestanddiagnosisbasedonvirtualrealityandvirtualinstrument”isexcutedbythesupportingoftheDeanFun
4、dProjectodZhejiangUniversity.ThesystemframeofvehicleperformancetestisestablishedbasedonVirtualRealitymethod.Andexploratoryresearchworkiscarriedouttosolvethekeyproblemsonthedevelopmentofvirtualtestsystemofvehicleridecomfort.Thedetailcontentsareasfollowing.Chapteroneistheintroduction.Thebackgroundan
5、dsignificanceofprojectresearcharepresented.Therecearchstatnseonvehicleridecomfortinsideandoutsidearereviewedonpartoftheroadsurfaceperformance,thetestvaluationmethodandtheimprovementInvehicleridecomfort.AndtheresearchstatusareanalysedonapplyingVRtovehicleIndustry,especiallyinvehicletest.Themaincont
6、entsofthedissertationarealsogivenhere.ChaptertwoisthesystemdesignofvehiclesimulationtestbasedOnVR.Basedontheprinciplesofopenning,reusingandintegration,theintegratedsystemofcombinningmanytestsandperformancesynthesisvaluationisresearched.Basedonthesummarizationofthevehicletesttechnologyandtraditiona
7、ltestmethods,thenecessaryisclarifiedaboutthemethodofvehicievitualtest,andtheconceptofvehiclevitualtestisredefined,aswellasthecharacteristic.AccordingtosimilaritytheoryandVRtechnology,theideaandmethodofsoftwaredes