【導(dǎo)讀】本論文對(duì)電動(dòng)助力轉(zhuǎn)向系統(tǒng)試驗(yàn)臺(tái)進(jìn)行了分析和設(shè)計(jì)。通過研究EPS的工作過程，進(jìn)。東華轉(zhuǎn)向器公司的產(chǎn)品，運(yùn)用AutoCAD畫出試驗(yàn)臺(tái)的裝配圖。液壓滑臺(tái)設(shè)計(jì)，并對(duì)一些關(guān)鍵部件進(jìn)行了選擇、校核。

　　

【正文】 家測(cè)試剛出廠的電動(dòng)助力轉(zhuǎn)向系統(tǒng)，測(cè)試助力特性，工業(yè)計(jì)算機(jī)會(huì)生成助力特性曲線，并與數(shù)據(jù)庫中的標(biāo)注助力特性曲線進(jìn)行比較，評(píng)價(jià)EPS 系統(tǒng)的好壞。 總結(jié) 本設(shè)計(jì)只是對(duì)電動(dòng)助力轉(zhuǎn)向試驗(yàn)臺(tái)機(jī)械結(jié)構(gòu)的設(shè)計(jì)，軟件設(shè)計(jì)和硬件設(shè)計(jì)由另外兩位同學(xué)來完成。試驗(yàn)臺(tái)根據(jù)車速信號(hào)來控制助力電動(dòng)機(jī)的電流，以此來控制施加的助力轉(zhuǎn)矩的大小，可以得到電流與轉(zhuǎn)矩的關(guān)系曲線，然后與數(shù)據(jù)庫中的曲線相比較，可檢測(cè) 助力性能的好壞；次試驗(yàn)臺(tái)也可以做轉(zhuǎn)向器的疲勞實(shí)驗(yàn)，作為剛出廠時(shí)的檢測(cè)。由于本人能力有限，所以不足之處還請(qǐng)大家?guī)兔χ赋?。汽車電?dòng)助力轉(zhuǎn)向試驗(yàn)臺(tái)涉及機(jī)械、汽車、電子和軟件設(shè)計(jì)等多學(xué)科領(lǐng)域，它的發(fā)展一定會(huì)促進(jìn) EPS 產(chǎn)品質(zhì)量的提高，對(duì)中國汽車工業(yè)產(chǎn)生一定影響。 28 參考文獻(xiàn) .汽車構(gòu)造 (第三版下冊(cè) )[M].北京 : 機(jī)械工業(yè)出版社 , .汽車設(shè)計(jì) (第 四 版 )[M].北京 : 機(jī)械工業(yè)出版社 , . 汽車?yán)碚?(第三版 )[M].北京 : 機(jī)械工業(yè)出版社 ,2020 ,施國標(biāo) .汽車電動(dòng)助力轉(zhuǎn)向技術(shù)的發(fā)展現(xiàn)狀與趨勢(shì) [J].公路交通科技 ,2020(3): 2328 ,何仁 .汽車電動(dòng)轉(zhuǎn)向技術(shù)發(fā)展綜述 [J].長安大學(xué)學(xué)報(bào) (自然科學(xué)版 ), 2020(24): 3437 ,馮櫻 .電子控制式電動(dòng)助力轉(zhuǎn)向系統(tǒng)的開發(fā)前景 [J].汽車科技 2020.(3): 1722 ,周兆元主編 .互換性與測(cè)量技術(shù)基礎(chǔ) (第二版 )[M].北京 : 機(jī)械工業(yè)出版社， .組合機(jī)床設(shè)計(jì)簡明手冊(cè) [M].北京 : 機(jī)械工業(yè)出版社 , .汽車電動(dòng)助力轉(zhuǎn)向系統(tǒng)的動(dòng)力學(xué)分析與控制研究 [D].合肥工業(yè)大學(xué)碩士學(xué)位論文 ,2020 song, Kwangsuck Boo. Model development and control methodology of a new electric power steering system[J].Proceedings of the Institution of Mechanical Engineers. Part D, Journal of Automobile Engineering, 2020, 218 ,周兆元主編 .互換性與測(cè)量技術(shù)基礎(chǔ) (第二版 )[M].北京 : 機(jī)械工業(yè)出版社 , ,馮櫻 ,劉洋 .電動(dòng)助力轉(zhuǎn)向系統(tǒng)助力特性的研究 [J].湖北汽車工業(yè)學(xué)報(bào) , 2020(15): 1217 ,陳遼軍 .機(jī)械工程及自動(dòng)化簡明設(shè)計(jì)手冊(cè) (第二版上冊(cè) )[M].北京 : 機(jī)械工業(yè)出版社 , .機(jī)械設(shè)計(jì) [M].北京 : 高等教育出版社 , Hanbin, Zhang Zhongfu. Offline Detection of Electric Power Steering[J].Wuhan: School of Mechantronic Engineering Wuhan University of Technology 29 致 謝 光陰荏苒，時(shí)光如梭，轉(zhuǎn)眼間，四年的大學(xué)學(xué)習(xí)生活已進(jìn)入尾聲，往日的求學(xué)生活及知識(shí)的積累，將成為我心底最難忘的回憶和一筆終生的財(cái)富。汽車電動(dòng)助力轉(zhuǎn)向試驗(yàn)臺(tái)的研究啟迪了我的思維，開拓了我的視野，鍛煉了我的能力。自身能力的提高離不開我的指導(dǎo)老師羅紹新副教授的悉心指導(dǎo)和關(guān)懷。在此 論文完成之際，謹(jǐn)向您致以最誠摯的敬意！您淵博的學(xué)識(shí)、求實(shí)的作風(fēng)、具有開拓性的科學(xué)研究和對(duì)事業(yè)的執(zhí)著追求精神，讓我體會(huì)到了現(xiàn)代學(xué)者的風(fēng)采，同樣感到親人般的溫暖和關(guān)愛。我從你身上不僅學(xué)到了很多專業(yè)知識(shí)，而且學(xué)會(huì)了很多做人道理，這將是一筆永恒的財(cái)富，使我終生受益。還要感謝東華轉(zhuǎn)向器公司對(duì)我的幫助。 在多年的學(xué)習(xí)生活中，還得到了許多車輛系領(lǐng)導(dǎo)和老師的熱情關(guān)心和幫助，在這里我要感謝你們。 在這里我還要感謝我的父母，感謝你們對(duì)我養(yǎng)育，感謝各位老師，感謝你們傳授我知識(shí)，教我做人，感謝同學(xué)陪伴，感謝所有幫助過我的人，感謝你 們讓我順利完成了大學(xué)學(xué)習(xí)以及生活。 最后，向?qū)忛啽疚牡睦蠋焸冎戮矗? 周云鵬 2020 年 6 月 于南京 30 附錄 A：英文資料 Offline Detection of Electric Power Steering (EPS) Xu Hanbin Zhang Zhongfu School of Mechantronic Engineering Wuhan University of Technology. Wuhan 430070, CHINA\ Abstract: Increasing use of electric power steering (EPS) systems, which affect vehicle dynamic behavior, has prompted the need for a more effective method of testing electric power steering systems, especially to electric control unit (ECU) in EPS. This research aims at building EPS offline platform for realization of performance detection. First, the control logic on EPS is analyzed, and all kinds of input signals influencing on EPS are analyzed and modeled. They include engine velocity, vehicle velocity, selfdiagnosis signal, starter signal and the steering angle. Then, the hardware intheloop simulation (HILS) system is designed. The industrial puter is selected as the main test platform with some ISAbus cards. In addition, the conversion interface is designed to suit the inout need of EPS and the industrial puter. The system will be achieved with both simplicity and usability taken into account. The correlative control software is also developed with the good friendly interface. It can realize the storage of the testing data automatically. At last, the hardwarein theloop simulation system that can implement an actual load (prepared) torque delivered to the steering column is achieved. Experimental studies show that the hardwareintheloop simulation system can satisfy the need of offline detection. Keywords： simulation, electric power steering, hardwareintheloop I. Introduction Electric power steering (EPS) is more energy efficient and environmentally patible. It consumes approximately onetwentieth the energy of conventional hydraulic power steering systems and, as it does not contain any oil, it does not pollute the environment both when it is produced and discarded. As a result, this motivates the great increase of EPSequipped vehicles recently. Although electric power steering systems offer significant advantages over their hydraulic counterparts, electric motor technology and controls had not reached the point where they could be used in this application until just recently. Thus, it is very necessary to improve EPS quality continuously, especially to the core of EPS: electric control unit (ECU). It certainly leads to more tests on EPS, and the tests are also very important for ECU development. It is a problem to 31 process testing in the dynamics of unavailable hardware (not built yet or impossible or inconvenient to access). Now hardwareintheloop simulation (HILS) is introduced. Test in hardwareintheloop simulation is a viable alternative, allowing new electronic control units and software to be tested largely in a virtual environment, without real vehicles or prototypes. This report outlines the construction of the offline EPS detection systems, as well as their main ponents. And EPS experiment based on HILS has been achieved. II. EPS System A. Principle of EPS The EPS system consists of a torque sensor, which senses the driver’s movements of the steering wheel。 an ECU, which performs calculations on assisting force based on signals from the torque sensor。 a motor, which produces turning force according to output from the ECU。 and a reduction gear, which increases the turning force from the motor and transfers it to the steering mechanism. EPS is available in two types: a column type in which the reduction gear is located directly under the steering wheel, and a pinion type in which the reduction gear is attached to the pinion of the rack and pinion assembly. Each type of EPS system is speedsensitive— vehicle speed and engine rotation signals are input from the vehicle into the ECU. shows a vehicle with columntype EPS. The main purpose of any power steering system is, of course, to provide assist to the driver. This is achieved by the torque sensor, which measures the driver’s torque and sends a signal to the controller proport