【導讀】完整說明書、圖紙請加叩153893706. 親，由于某些原因，沒有上傳完整的畢業(yè)設(shè)計（完整的應(yīng)包括畢業(yè)設(shè)計。說明書、相關(guān)圖紙CAD/PROE、中英文文獻及翻譯等），此文檔也稍微刪除。了一部分內(nèi)容如需要的朋友，請聯(lián)系我的。Q&Q:153893706，數(shù)萬篇現(xiàn)成設(shè)計及另有的高端團隊絕對可滿足您的需要。汽車轉(zhuǎn)向器是汽車的重要組成部分，也是決定汽車主動安全性的關(guān)鍵總成，它的。質(zhì)量嚴重影響汽車的操

　　

【正文】 ing system divides into the hydraulic pressure steering system and the electrically operated steering system pressure steering system is at present uses the most widespread steering system. The hydraulic pressure steering system increased the hydraulic system in the mechanical system foundation, including hydraulic pump, V shape band pulley, drill tubing, feed installment, boost installment and control valve. It with the aid of in the motor car engine power actuation hydraulic pump, the air pressor and the generator and so on, by the fluid strength, the physical strength or the electric power increases the pilot to operate the strength which the front wheel changes, enables the pilot to be possible nimbly to operate motor turning facilely, reduced the labor intensity, enhanced the travel security. The hydraulic pressure boost steering system from invented already had about half century history to the present, might say was one kind of more perfect system, because its work reliable, the technology mature still widely is applied until now. It takes the power supply by the hydraulic pump, after oil pipeline control valves to power hydraulic cylinder feed, through the connecting rod impetus rotation gear movement, may changes the boost through the change cylinder bore and the flowing tubing head pressure size the size, from this achieved changes the boost the function. The traditional hydraulic pressure type power steering system may divide into generally according to the liquid flow form: Ordinary flow type and atmospheric pressure type 2 kind of types, also may divide into according to the control valve form transfers the valve type and the slidevalve type. Along with hydraulic pressure power steering system on automobile daily popularization, the people to operates when the portability and the road feeling request also day by day enhance, however the hydraulic pressure power 完整說明書、圖紙請加叩 153893706 steering system has many shortings actually: ① Because its itself structure had decided it is unable to guarantee vehicles rotates the steering wheel when any operating mode, all has the ideal operation stability, namely is unable simultaneously to guarantee time the low speed changes the portability and the high speed time operation stability。② The automobile changes the characteristic to drive the pilot technical the influence to be serious。 ③ The steering ratio is fixed, causes the motor turning response characteristic along with changes and so on vehicle speed, transverse acceleration to change, the pilot must aim at the motor turning characteristic peaktopeak value and the phase change ahead of time carries on certain operation pensation, thus controls the automobile according to its wish travel. Like this increased pilot39。s operation burden, also causes in the motor turning travel not to have the security hidden danger。 But hereafter appeared the electrically controlled hydraulic booster system, it increases the velocity generator in the traditional hydraulic pressure power steering system foundation, enables the automobile along with the vehicle speed change automatic control force size, has to a certain extent relaxed the traditional hydraulic pressure steering system existence question. At present our country produces on the mercial vehicle and the passenger vehicle uses mostly is the electrically controlled hydraulic pressure boost steering system, it is quite mature and the application widespread steering system. Although the electrically controlled hydraulic servo alleviated the traditional hydraulic pressure from certain degree to change between the portability and the road feeling contradiction, however it did not have fundamentally to solve the HPS system existence insufficiency, along with automobile microelectronic technology development, automobile fuel oil energy conservation request as well as global initiative environmental protection, it in aspect and so on arrangement, installment, leakproof quality, control sensitivity, energy consumption, attrition and noise insufficiencies already more and more obvious, the steering system turned towards the electrically operated boost steering system development. The electrically operated boost steering system is the present motor turning system development direction, its principle of work is: EPS system ECU after es from the steering wheel torque sensor and the vehicle speed 完整說明書、圖紙請加叩 153893706 sensor signal carries on analysis processing, controls the electrical machinery to have the suitable boost torque, assists the pilot to plete changes the operation. In the last few years, along with the electronic technology development, reduces EPS the cost to bee large scale possibly, Japan sends the car pany, Mitsubishi Car pany, this field car pany, US39。s Delphi automobile system pany, TRW Corporation and Germany39。s ZF Corporation greatly all one after another develops 和Siemens Automotive Two big panies invested 65,000,000 pounds to use in developing EPS, the goal are together load a car to 2021, yearly produce 300 ten thousand sets, became the global EPS manufacturer. So far, the EPS system in the slight passenger vehicle, on the theater box type vehicle obtains the widespread application, and every year by 300 ten thousand speed development. Steering is the term applied to the collection of ponents, linkages, etc. which allow for a vessel (ship, boat) or vehicle (car) to follow the desired course. An exception is the case of rail transport by which rail tracks bined together with railroad switches provide the steering function. The most conventional steering arrangement is to turn the front wheels using a hand– operated steering wheel which is positioned in front of the driver, via the steering column, which may contain universal joints to allow it to deviate s