【正文】 摘 要 本論文對電動助力轉(zhuǎn)向 (EPS)系統(tǒng)試驗臺進行了分析和設(shè)計。 本文設(shè)計的試驗臺的優(yōu)點： (1)檢測試驗簡單，結(jié)構(gòu)緊湊 (2)裝夾控制方便 (3)改進方便，便 于升級改裝 關(guān)鍵詞： EPS； 試驗臺； AutoCAD；液壓滑臺 ABSTRACT This paper aims to do some analysis and design of electric power steer (EPS) system test platform, two forms of which are pared and selected in this context. Through learning the trend of modern EPS system test platform, it includes analysis and design of EPS test platform. By studying the work process of EPS, and then design the overall structure of EPS test platform with the reference to Dong Hua steering pany’s products. The assembly drawing of EPS test platform is drawn by AutoCAD. In this design, hydraulic slider is selected, and some key parts are selected and checked. The advantages of my design are as follows: (1)Testing simple, structure pacted (2)Easy to clamping and control (3) Easy to be improved and updated. Keywords： EPS； test platform； AutoCAD； hydraulic slider 目 錄 第一章 緒 論 ....................................................................................................... 1 引言 ................................................................................................................... 1 選題背景與意義 ............................................................................................... 1 研究現(xiàn)狀 ........................................................................................................... 2 本文研究的內(nèi)容 ............................................................................................... 2 第二章 電動助力轉(zhuǎn)向系統(tǒng)試驗臺的總體設(shè)計 .......................................... 4 電動助力轉(zhuǎn)向系統(tǒng) ........................................................................................... 4 工作原理 ................................................................................................. 4 工作特點 ................................................................................................. 4 典型試驗介紹 ................................................................................................... 5 名詞定義 ................................................................................................. 5 特性試驗的性能技術(shù)要求 .................................................................... 5 試驗臺整體方案 設(shè)計 ....................................................................................... 6 試驗臺測試項目 ............................................................................................... 8 車速 ......................................................................................................... 8 系統(tǒng)的阻力矩 ......................................................................................... 8 電動機的各項參數(shù) ................................................................................. 9 轉(zhuǎn)向盤主扭矩與助力電動機轉(zhuǎn)矩的關(guān)系 ............................................. 9 第三章 電動助力轉(zhuǎn)向試驗臺各部件的選用 ............................................. 12 系統(tǒng)主要部件 ................................................................................................. 12 電子控制單元 (ECU) ............................................................................ 12 電動機 ................................................................................................... 12 減速機構(gòu) ............................................................................................... 13 轉(zhuǎn)向電動機 ........................................................................................... 14 磁粉制動器 ........................................................................................... 14 傳感器的選擇 ................................................................................................. 16 轉(zhuǎn)速傳感器 ........................................................................................... 18 轉(zhuǎn)矩傳感器 ........................................................................................... 18 第四章 試驗臺的結(jié)構(gòu)設(shè)計 ............................................................................. 21 試驗臺的布置 ................................................................................................. 21 聯(lián)軸器的選擇與校核 ..................................................................................... 21 普通平鍵的選擇與校核 ................................................................................. 24 液壓滑臺 ......................................................................................................... 25 磁粉制動器支架 ............................................................................................. 26 減速機構(gòu)支架 ................................................................................................. 26 轉(zhuǎn)向電機支架 ................................................................................................. 26 第五章 結(jié) 論 ..................................................................................................... 27 結(jié)論 ................................................................................................................. 27 總結(jié) ................................................................................................................. 27 參考文獻 ...................................................................................................................... 28 致 謝 ...................................................................................................................... 29 附錄 A：英文資料 ...................................................................................................... 30 附錄 B：英文資料翻譯 .............................................................................................. 36 1 第一章 緒 論 引言 汽車轉(zhuǎn)向系統(tǒng)是用于改變或保持汽車行駛方向的專門機構(gòu)。 選題背景與意義 汽車電動助力轉(zhuǎn)向系統(tǒng) (EPS)在日本最先獲得實際應(yīng)用。 EPS 的助力形式也從低速范圍助力型向全速范圍助力型發(fā)展，并且其控制形式與功能也進一步加強。電動助力轉(zhuǎn)向系統(tǒng)的優(yōu)勢主要體現(xiàn)在： (1) 提高了汽車的操縱性能。 (3) 增強了轉(zhuǎn)向跟隨性和可靠性。 (5) 占用空間更小，質(zhì)量更輕，結(jié)構(gòu)更緊湊。目前，在全世界汽車行業(yè)中，電動助力轉(zhuǎn)向系統(tǒng)每年正以 90%~10%的增長速度發(fā)展，年增長量達 130萬 ~150 萬套， 20xx 年將超過 1000 萬套。 汽車 EPS 試驗臺就是針對這一情況研制的，它采用微機為控制核心，采用傳感器對 EPS