畢業(yè)設(shè)計(jì)：EPS減速機(jī)構(gòu)的優(yōu)化設(shè)計(jì)
論文說明書共53頁，字?jǐn)?shù)總計(jì)：26533
資料簡介：
畢業(yè)設(shè)計(jì)（論文）：EPS減速機(jī)構(gòu)的優(yōu)化設(shè)計(jì).doc
畢業(yè)設(shè)計(jì)（論文）開題報(bào)告.rtf
畢業(yè)設(shè)計(jì)（論文）任務(wù)書.doc
電動助力轉(zhuǎn)向系統(tǒng)（譯文）.docx
電動助力轉(zhuǎn)向系統(tǒng)（原文）.docx
進(jìn)度考核表.doc
目錄.doc
內(nèi)容提要（英）.doc
內(nèi)容提要（中）.doc
新評閱表.doc
優(yōu)秀畢業(yè)論文簡介.doc
優(yōu)秀畢業(yè)論文專家評審表.doc
優(yōu)秀畢業(yè)設(shè)計(jì)(論文)申報(bào)表.doc
A0-EPS減速機(jī)構(gòu)裝配圖.dwg
A2-殼體.dwg
A0-殼體裝配.dwg
A2-軸承殼.dwg
A3-蝸輪組合.dwg
A3-蝸桿.dwg
A3-套筒.dwg
A3-輸出軸.dwg
A4-聯(lián)軸器.dwg
A3-安裝支架（中）.dwg
A3-安裝支架（下）.dwg
A3-安裝支架（上）.dwg
A3-安裝墊塊.dwg

內(nèi)容提要

電動助力轉(zhuǎn)向系統(tǒng)是典型的機(jī)電一體化系統(tǒng)，涉及的學(xué)科非常廣泛。包括機(jī)械設(shè)計(jì)、汽車?yán)碚?、電力電子、?jì)算機(jī)技術(shù)、控制技術(shù)、傳感器技術(shù)和電機(jī)技術(shù)等多個(gè)領(lǐng)域，因具有節(jié)約燃料、減輕自重、提高主動安全性、有利于環(huán)保等一系列優(yōu)點(diǎn)，已成為世界汽車轉(zhuǎn)向技術(shù)發(fā)展的研究趨勢。
減速機(jī)構(gòu)作為電動助力轉(zhuǎn)向系統(tǒng)的關(guān)鍵部件之一，因體積的大小直接影響安裝空間和汽車的布局，在設(shè)計(jì)的過程中不僅要滿足自身的強(qiáng)度要求還應(yīng)使其體積盡可能的小，結(jié)構(gòu)更緊湊。因此，有必要對所設(shè)計(jì)的減速機(jī)構(gòu)進(jìn)行結(jié)構(gòu)上的優(yōu)化，達(dá)到整體設(shè)計(jì)要求。
在優(yōu)化設(shè)計(jì)過程中，以減速機(jī)構(gòu)中蝸桿傳動中心距最小、蝸輪齒冠體積最小以及總體積最小為目標(biāo)。用Pro/E軟件建立汽車EPS減速機(jī)構(gòu)三維模型。應(yīng)用ANSYS軟件對汽車EPS結(jié)構(gòu)中渦輪及蝸桿組件進(jìn)行強(qiáng)度校核。對汽車EPS中動力學(xué)模型、助力電動機(jī)模型、進(jìn)行數(shù)學(xué)建模，選擇EPS助力特性曲線的相關(guān)參數(shù)，設(shè)計(jì)EPS的助力特性曲線。
在對電動助力轉(zhuǎn)向器減速機(jī)構(gòu)優(yōu)化設(shè)計(jì)后，達(dá)到蝸桿傳動中心距最小、蝸輪齒冠體積最小以及總體積最小為目標(biāo)，同時(shí)使轉(zhuǎn)向更靈活，安裝空間更小。
Summary

Electric power steering system is the typical electromechanical integration system, involved very extensive subject. Such as mechanical design, automobile theory, power electronics, computer technology, control technology, the sensor technology and motor technology etc, because it has advantages of saving fuel,weight light , improving their security and being good for the environment ,so it has became the vehicle steering technology development trend of research.
Decelerate institutions regard as one of the key components of electric power steering system , the layout of installation space and car is directly affected by the size . in design process,it is not only to meet its own strength requirement ,also should make its volume smaller, structure more compact. Therefore, it is necessary to design the deceleration institutions on the structure optimization, achieve integral design requirements.
In the optimization design process, aiming at reducing the distance of worm transmission center , worm volume and the total volume.Using Pro/E software to built 3D model of EPS. ANSYS software EPS structure turbine and check intensity worm components.buit EPS of car dynamics model, power motor model and mathematical modeling, choose EPS dynamical characteristics curve related parameters and the design of dynamical characteristics curve EPS.
After designing electric power steering gear deceleration institutions of optimized, satisfy the smallest of worm transmission center, tooth corona of worm and the total volume, while making the steering more flexible, installation space smaller.

目錄

內(nèi)容提要............................. ............ ....... .. Ⅰ
Summary.................................... . ....... ...... Ⅱ
1 緒論........................... ....... .... ..... .... ....1
1.1論文的研究背景與意義...................... ... ........ ....1
1.2 轉(zhuǎn)向系統(tǒng)的發(fā)展歷程........................ .... . . .. ....1
1.3 EPS國內(nèi)外研究現(xiàn)狀和存在的問題............ ....... ... ....3
2 汽車EPS減速機(jī)構(gòu)優(yōu)化設(shè)計(jì)............. . .. ...... .. ....... 8
2.1汽車EPS概述.............. ............ ... ..... . . . . ..8
2.2汽車EPS的組成結(jié)構(gòu)........... ........ ....... ..........10
2.3汽車EPS減速機(jī)構(gòu)優(yōu)化設(shè)計(jì)...... ...... ...... ..............18
3 汽車EPS結(jié)構(gòu)有限元分析..... ...... .. ... ..... .............26
3.1結(jié)構(gòu)有限元分析關(guān)鍵技術(shù)...... ... .... ...... ..............26
3.2汽車EPS結(jié)構(gòu)靜力學(xué)分析....... . ...... ... .................27
3.3接觸應(yīng)力的理論公式解與有限元分析結(jié)果的對比.. ....... .....34
4 汽車EPS動態(tài)特性分析........ ..... .... ...... .. .... ......36
4.1汽車EPS動力學(xué)模型計(jì)算....... ......... .... ..... .........36
4.2汽車EPS助力特性曲線設(shè)計(jì)... ......... .... ................40
4.3 理想的電動轉(zhuǎn)向轉(zhuǎn)向手力模型....... .... ..... . ...........43
4.4汽車EPS轉(zhuǎn)向性能分析........... ...... ... .... .... .......45
總結(jié)....... .......... .. ...... ...... ..... .... .............50
參考文獻(xiàn).......... ............ ..... ..... ...... ..........51
致謝............ ............ ........ ....... . ............52