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哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院畢業(yè)設(shè)計(jì)（論文） 摘要 汽車(chē)轉(zhuǎn)向系統(tǒng)可按轉(zhuǎn)向的能源不同分為機(jī)械轉(zhuǎn)向系統(tǒng)和動(dòng)力轉(zhuǎn)向系統(tǒng)兩類(lèi)。 汽車(chē)電動(dòng)助力轉(zhuǎn)向系統(tǒng)是一種新型的汽車(chē)動(dòng)力轉(zhuǎn)向系統(tǒng)，與傳統(tǒng)液壓轉(zhuǎn)向系統(tǒng)相比，采用電動(dòng)機(jī)直接提供助力，具有多方面優(yōu)越性。近年來(lái)已有很多中高檔汽車(chē)配備了動(dòng)力轉(zhuǎn)向系統(tǒng)裝置，EPS研究也成為汽車(chē)工業(yè)的熱門(mén)課題之一，具有重要研究?jī)r(jià)值和巨大潛在應(yīng)用前景。 在本文中重點(diǎn)進(jìn)行齒輪齒條轉(zhuǎn)向器的設(shè)計(jì)計(jì)算和對(duì)轉(zhuǎn)向齒輪軸的校核，及轉(zhuǎn)向傳動(dòng)機(jī)構(gòu)的優(yōu)化設(shè)計(jì)。主要方法和理論采用汽車(chē)設(shè)計(jì)的經(jīng)驗(yàn)參數(shù)和大學(xué)所學(xué)機(jī)械設(shè)計(jì)的課程內(nèi)容進(jìn)行設(shè)計(jì)，并做了歸納和總結(jié)。 關(guān)鍵詞 轉(zhuǎn)向系統(tǒng)；電動(dòng)助力轉(zhuǎn)向系統(tǒng)；齒輪齒條轉(zhuǎn)向器；優(yōu)化設(shè)計(jì) -I- Abstract The steering system can be divided into mechanical energy and power steering system. Electric power steering system is a new type of vehicle power steering system, compared with traditional hydraulic steering systems, directly with the motor power, has many advantages. In recent years, many in the luxury car have been equipped with a power steering system device, EPS studies have become a hot topic in automotive industry, great research value and great potential applications. This article focus on the design of the rack and pinion steering gear shaft calculation and verification, and optimization of steering linkage. The main methods and theories of experience with automotive design parameters and the university curriculum in mechanical design to design, and made and summarized. Key words Steering System；Electric Power Steering ； Rack and pinion steering；Optimization -II-