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汽车设计课设-驱动桥设计

汽车设计课设-驱动桥设计
汽车设计课设-驱动桥设计

汽车设计课程设计说明书

题目:BJ130驱动桥部分设计验算与校核

姓名:

学号:

专业名称:车辆工程

指导教师:

日期:目录

一、课程设计任务书 (1)

二、总体结构设计 (2)

三、主减速器部分设计 (2)

1、主减速器齿轮计算载荷的确定 (2)

2、锥齿轮主要参数选择 (4)

3、主减速器强度计算 (5)

四、差速器部分设计 (6)

1、差速器主参数选择 (6)

2、差速器齿轮强度计算 (7)

五、半轴部分设计 (8)

1、半轴计算转矩Tφ及杆部直径 (8)

2、受最大牵引力时强度计算 (9)

3、制动时强度计算 (9)

4、半轴花键计算 (9)

六、驱动桥壳设计 (10)

1、桥壳的静弯曲应力计算 (10)

2、在不平路面冲击载荷作用下的桥壳强度计算 (11)

3、汽车以最大牵引力行驶时的桥壳强度计算 (11)

4、汽车紧急制动时的桥壳强度计算 (12)

5、汽车受最大侧向力时的桥壳强度计算 (12)

七、参考书目 (14)

八、课程设计感想 (15)

一、课程设计任务书

1、题目

《BJ130驱动桥部分设计验算与校核》

2、设计内容及要求

(1)主减速器部分包括:主减速器齿轮的受载情况;锥齿轮主要参数选择;主减速器强度计算;齿轮的弯曲强度、接触强度计算。

(2)差速器:齿轮的主要参数;差速器齿轮强度的校核;行星齿轮齿数和半轴齿轮齿数的确定。

(3)半轴部分强度计算:当受最大牵引力时的强度;制动时强度计算。

(4)驱动桥强度计算:①桥壳的静弯曲应力

②不平路载下的桥壳强度

③最大牵引力时的桥壳强度

④紧急制动时的桥壳强度

⑤最大侧向力时的桥壳强度

3、主要技术参数

轴距L=2800mm

轴荷分配:满载时前后轴载1340/2735(kg)

发动机最大功率:80ps n:3800-4000n/min

发动机最大转矩﹒m n:2200-2500n/min

传动比:i1=; i0=

轮毂总成和制动器总成的总重:g k=274kg

驱动桥差速器设计说明书

摘要 汽车驱动桥是汽车的主要部件之一,其基本的功用是增大由传动轴或直接由变速器传来的转矩,再将转矩分配给左右驱动车轮,并使左右驱动车轮具有汽车行驶运动所要求的差速功能。汽车差速器位于驱动桥内部,为满足汽车转弯时内外侧车轮或两驱动桥直接以不同角度旋转,并传递扭矩的需求,在传递扭矩时应能够根据行驶的环境自动分配扭矩,提高了汽车通过性。其质量,性能的好坏直接影响整车的安全性,经济性、舒适性、可靠性。 随着汽车技术的成熟,轻型车的不断普及,人们根据差速器使用目的的不同,设计出多种类型差速器。与国外相比,我国的车用差速器开发设计不论在技术上,还是在成本控制上都存在不小的差距,尤其是目前兴起的三维软件设计方面,缺乏独立开发与创新能力,这样就造成设计手段落后,新产品上市周期慢,材料品质和工艺加工水平也存在很多弱点。 本文认真地分析了国内外驱动桥中差速器设计的现状及发展趋势,在论述汽车驱动桥的基本原理和运行机理的基础上,提炼出了在差速器设计中应掌握的满足汽车行驶的平顺性和通过性、降噪技术的应用及零件的标准化、部件的通用化、产品的系列化等关键技术;阐述了汽车差速器的基本原理并进行了系统分析;根据经济、适用、舒适、安全可靠的设计原则和分析比较,确定了轻型车差速器总成及半轴的结构型式;轻型车差速器的结构设计强度计算运用了理论分析成果;最后运用CATIA软件对汽车差速器进行建模设计,提升了设计水平,缩短了开发周期,提高了产品质量,设计完全合理,达到了预期的目标。 关键词:驱动桥;差速器;半轴;结构设计;

Automobile driving axle is one of the main components of cars, its basic function is increased by the transmission shaft or directly by coming from torque, again will torque distribution to drive wheels, and make about driving wheel has about vehicle movement required differential function. Auto differential drive to meet internal, located in car wheel or when turning inside and outside two axles directly with different point of view, and transfer the rotating torque transmission torque in demand, according to the environment should be driving torque, improve the automatic assignment car through sex. Its quality, performance will have a direct impact on the security of the vehicle, economy, comfort and reliability. As car technology maturity, the increasing popularity of small, people of different purposes according to differential, the design gives a variety of types differential. Compared with foreign countries, China's automotive differential development design whether in technology, or in the cost control there are large gap, especially at present the rise of 3d software design, lack of independent development and innovation ability, thus causing design means backward, new products listed cycle slow, materials quality and craft processing level also has many weaknesses. This paper conscientiously analyzes the differential drive axle design at home and abroad in the present situation and development trend of automobile driven axle, this basic principle and operation mechanism, carry on the basis of the differential practiced a meet the design should be mastered in smooth and automobile driving through sexual, noise reduction technology application and parts of standardization, parts of generalization, serialization of products, and other key technology; Expounds the basic principle and automotive differential system analysis; According to economic, applicable, comfortable, safe and reliable design principles and analysis comparison, determine the small differential assembly and half shaft structure type; Small differential structure design strength calculation using theoretical analysis results; Finally using CATIA software modeling design of automotive differential, promoted design level, shorten the development cycle, improve the product quality, design completely reasonable, can achieve the desired goals. Key words:Differential mechanism;Differential gear;Planetary gear;Semiaxis;

五十铃轻型货车驱动桥的设计

摘要 驱动桥位于传动系末端,其基本功用是增矩、降速,承受作用于路面和车架或车身之间的作用力。它的性能好坏直接影响整车性能,而对于载重汽车显得尤为重要。当采用大功率发动机输出大的转矩以满足目前载重汽车的快速、重载的高效率、高效益的需要时,必须搭配一个高效、可靠的驱动桥,所以采用传动效率高的单级减速驱动桥已经成为未来载重汽车的发展方向。驱动桥设计应主要保证汽车在给定的条件下具有最佳的动力性和燃油经济性。本设计根据给定的参数,按照传统设计方法并参考同类型车确定汽车总体参数,再确定主减速器、差速器、半轴和桥壳的结构类型,最后进行参数设计并对主减速器主、从动齿轮、半轴齿轮和行星齿轮进行强度以及寿命的校核。驱动桥设计过程中基本保证结构合理,符合实际应用,总成及零部件的设计能尽量满足零件的标准化、部件的通用化和产品的系列化及汽车变型的要求,修理、保养方便,机件工艺性好,制造容易。 关键字:轻型货车;驱动桥;单级主减速器;差速器;半轴;桥壳

ABSTRACT Drive axle is at the end of the powertrain, and its basic function is increasing the torque and reducing the speed,bearing the force between the road and the frame or body.Its performance will have a direct impact on automobile performance .Because using the big power engine with the big driving torque satisfied the need of high speed,heavy-loaded,high efficiency,high benefit today’ heavy truck,must exploiting the high driven efficiency single reduction final drive axle is becoming the heavy truck’ developing tendency. Drive axle should be designed to ensure the best dynamic and fuel economy on given condition. According to the design parameters given ,firstly determine the overall vehicle parametres in accordance with the traditional design methods and reference the same vehicle parameters, then identify the main reducer, differential, axle and axle housing structure type, finally design the parameters of the main gear,the driven gear of the final drive, axle gears and spiral bevel gear and check the strength and life of them. In design process of the drive axle,we should ensure a reasonable structure, practical applications, the design of assembly and parts as much as possible meeting requirements of the standardization of parts, components and products’ univertiality and the serialization and change , convenience of repair and maintenance, good mechanical technology, being easy to manufacture. Keywords: Pickup truck; Drive axle; Single reduction final drive; Differential; Axle; Drive Axle housing

驱动桥壳毕业设计

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江淮帅铃汽车驱动桥设计说明书

第1章绪论 1.1 本课题的目的和意义 本课题是对江淮帅铃货车驱动桥的结构设计。通过此次毕业设计,训练学生的实际工作能力。掌握汽车零部件设计与生产技术是开发我国自主品牌汽车产品的重要基础,汽车驱动桥时传动系统的重要部件。设计汽车驱动桥,需要综合考虑多方面的因素。设计时需要综合运用所学的知识,熟悉实际设计过程,提高设计能力。驱动桥的设计,由驱动桥的结构组成、功用、工作特点及设计要求讲起,详细地分析了驱动桥总成的结构形式及布置方法;全面介绍了驱动桥车轮的传动装置和桥壳的各种结构形式与设计计算方法。 汽车驱动桥位于传动系的末端。其基本功用首先是增扭,降速,改变转矩的传递方向,即增大由传动轴或直接从变速器传来的转矩,并将转矩合理的分配给左右驱动车轮;其次,驱动桥还要承受作用于路面或车身之间的垂直力,纵向力和横向力,以及制动力矩和反作用力矩等。驱动桥一般由主减速器,差速器,车轮传动装置和桥壳组成。 对于重型载货汽车来说,要传递的转矩较乘用车和客车,以及轻型商用车都要大得多,以便能够以较低的成本运输较多的货物,所以选择功率较大的发动机,这就对传动系统有较高的要求,而驱动桥在传动系统中起着举足轻重的作用。汽车驱动桥是汽车的重大总成,承载着汽车的满载簧荷重及地面经车轮、车架及承载式车身经悬架给予的铅垂力、纵向力、横向力及其力矩,以及冲击载荷;驱动桥还传递着传动系中的最大转矩,桥壳还承受着反作用力矩。汽车的经济性日益成为人们关心的话题,这

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轻型货车驱动桥的毕业设计

摘要 轻型汽车在商用汽车生产中占有很大的比重,而且驱动桥在整车中十分重要。驱动桥作为汽车四大总成之一,它的性能的好坏直接影响整车性能,而对于载货汽车显得尤为重要。为满足目前当前载货汽车的快速、高效率、高效益的需要时,必须要搭配一个高效、可靠的驱动桥。设计出结构简单、工作可靠、造价低廉的驱动桥,能大大降低整车生产的总成本,推动汽车经济的发展,并且通过对汽车驱动桥的学习和设计实践,可以更好的学习并掌握现代汽车设计与机械设计的全面知识和技能,所以本题设计一款结构优良的轻型货车驱动桥具有一定的实际意义。 本文首先确定主要部件的结构型式和主要设计参数,在分析驱动桥各部分结构形式、发展过程及其以往形式的优缺点的基础上,确定了总体设计方案,采用传统设计方法对驱动桥各部件主减速器、差速器、半轴、桥壳进行设计计算并完成校核。最后运用AUTOCAD完成装配图和主要零件图的绘制。 关键词:轻型货车;驱动桥;单级主减速器;差速器;半轴;桥壳

ABSTRACT . Pickup trucks take a large proportion of commercial vehicles production, and the drive axle is one of the most important structure. Drive axle is the one of automobile four important assemblies, Its performance directly influence on the entire automobile, especially for the truck .Because using the big power engine with the big driving torque satisfied the need of high speed, heavy-loaded, high efficiency, high benefit today` truck, must exploiting the high driven efficiency single reduction final drive axle is becoming the trucks’ developing tendency. Design a simple, reliable, low cost of the drive axle, can greatly reduce the total cost of vehicle production, and promote the economic development of automobile and automotive drive axle of the study and design practice, can better learn and to master modern automotive design and mechanical design of a comprehensive knowledge and skills, so the title of the fine structure of the design of a pickup vehicle drive axle has a certain practical significance. In this paper, first of all determine the structure of major components and the main design parameters, the analysis of the various parts of the structure of the bridge drive type, the form of the development process and its advantages and disadvantages of the past, determined on the basis of the design program, using the traditional design method of various parts of the drive axle Main reducer, differential, axle, axle housing was designed to calculate and complete the check. Finally complete the final assembly drawing by using AUTOCAD and mapping the main components. Keywords: Pickup truck; Drive axle; Single reduction final drive; Differential; Axle; Drive Axle housing

商用车驱动桥设计说明书

商用车驱动桥设计 摘要 驱动桥作为汽车四大总成之一,它的性能的好坏直接影响整车性能。当采用大功率发动机输出大的转矩以满足目前载重汽车的快速、重载的高效率的需要时,必须要搭配一个高效、可靠的驱动桥。本文参照传统驱动桥的设计参数;然后参考类似驱动桥的结构,确定出总体设计方案;最后对主,从动锥齿轮,差速器圆锥行星齿轮,半轴齿轮,全浮式半轴和整体式桥壳的强度进行校核以及对支撑轴承进行了寿命校核。本文还是采用传统的锥齿轮作为商用车的主减速器。 关键词:商用车,驱动桥,主减速器,螺旋锥齿轮

THE DESIGNING OF BUSINESS AUTOMOBILE REAR DRIVE AXLES ABSTRACT Drive axle is one of automobile four important assemblies. Its performance directly influence on the entire automobile, especially for the heavy truck. When using the big power engine with the big driving torque to satisfy the need of high speed, heavy-loaded, high efficiency, high benefit. Today heavy truck must exploit the high driven efficiency single reduction final drive axle. Becoming the heavy traditional designing method of the drive axle: first, make up the main parts structure and the key designing parameters; then reference to the similar driving axle structure, decide the entire designing project; finally check the strength of the axle drive bevel pinion, bevel gear wheel, the differential planetary pinion, differential side gear, full-floating axle shaft and the banjo axle housing, and the life expection of carrier bearing. The designing takes spiral bevel gear as the gear type of business automobile’ final drive. KEY WORDS: business automobile, drive axle, final drive , spiral bevel gear

车辆工程毕业设计14CA1040轻型货车驱动桥设计

本科学生毕业设计 CA1040轻型货车驱动桥设计 学院名称:汽车与交通工程学院 专业班级:车辆工程 学生姓名: 指导教师: 职称:实验师

摘要 驱动桥位于传动系末端,其基本功用是增矩、降速,承受作用于路面和车架或车身之间的作用力。它的性能好坏直接影响整车性能,而对于载重汽车显得尤为重要。轻型货车在商用货运汽车生产中占有很大的比重,为满足目前当前载货汽车的高速度、高效率、高效益的需要,必须要搭配一个高效、可靠的驱动桥。因此设计出结构简单、工作可靠、造价低廉的驱动桥,能大大降低整车生产的总成本,推动汽车经济的发展,并且通过对汽车驱动桥的学习和设计实践,可以更好的学习并掌握现代汽车设计与机械设计的全面知识和技能,所以本课题设计一款结构优良的轻型货车驱动桥具有一定的实际意义。 驱动桥设计应主要保证汽车在给定的条件下具有最佳的动力性和燃油经济性。本设计根据给定的参数,按照传统设计方法并参考同类型车确定汽车总体参数,再确定主减速器、差速器、半轴和桥壳的结构类型,最后进行参数设计并对主减速器主、从动齿轮、半轴齿轮和行星齿轮进行强度以及寿命的校核。驱动桥设计过程中基本保证结构合理,符合实际应用,总成及零部件的设计能尽量满足零件的标准化、部件的通用化和产品的系列化及汽车变型的要求,修理、保养方便,机件工艺性好,制造容易。 关键词:驱动桥;单级主减速器;差速器;半轴;桥壳

ABSTRACT Drive axle is at the end of the power train, and its basic function is increasing the torque and reducing the speed, bearing the force between the road and the frame or body. Its performance will have a direct impact on automobile performance .Because using the big power engine with the big driving torque satisfied the need of high speed,heavy-loaded,high efficiency,high benefit today’ heavy truck,must exploiting the high driven efficiency single reduction final drive axle is becoming the heavy truck’ developing tendency. Because using the big power engine with the big driving torque satisfied the need of high speed, heavy-loaded, high efficiency, high benefit today` truck, must exploiting the high driven efficiency single reduction final drive axle is becoming the trucks’ developing tendency. Design a simple, reliable, low cost of the drive axle, can greatly reduce the total cost of vehicle production, and promote the economic development of automobile and automotive drive axle of the study and design practice, can better learn and to master modern automotive design and mechanical design of a comprehensive knowledge and skills, so the title of the fine structure of the design of a pickup vehicle drive axle has a certain practical significance. According to the design parameters given ,firstly determine the overall vehicle parameters in accordance with the traditional design methods and reference the same vehicle parameters, then identify the main reducer, differential, axle and axle housing structure type, finally design the parameters of the main gear, the driven gear of the final drive, axle gears and spiral bevel gear and check the strength and life of them. In design process of the drive axle, we should ensure a reasonable structure, practical applications, the design of assembly and parts as much as possible meeting requirements of the standardization of parts, components and products’ universality and the serialization and change , convenience of repair and maintenance, good mechanical technology, being easy to manufacture. Key words: Drive axle; Single reduction final drive; Differential; Axle; Drive Axle housing

奥迪驱动桥毕业设计

奥迪A4L汽车驱动桥的结构设计学院机械与车辆学院 专业:姓名:指导老师: 车辆工程 吴伟铭学号: 职称: 090403011005 郭新民教授 中国·珠海 二○一三年五月

诚信承诺书 本人郑重承诺:本人承诺呈交的毕业设计《奥迪A4L汽车驱动桥的结构设计》是在指导教师的指导下,独立开展研究取得的成果,文中引用他人的观点和材料,均在文后按顺序列出其参考文献,设计使用的数据真实可靠。 本人签名: 日期:年月日

奥迪A4L汽车驱动桥的结构设计 摘要 汽车驱动桥的功用就是将万向传动装置输入的发动机动力进行传递,从而实现降低速度,增大转矩的目的。在改变动力传递方向后,将动力分配到左,右两个驱动轮。使汽车能够正常速度行驶,同时允许左右车轮以不同的转速旋转。驱动桥由主减速器,差速器,半轴,万向传动装置等组成。目前,发动机前横置前轮驱动形式的传动系统已经广泛应用于很多轿车当中,由于在这样的系统当中的变速器,主减速器和差速器组成一个整体,省去了传动轴,同时也缩短了传动路线,提高了传动系统中的机械效率。在这样的一体式传动中,它可以同时完成变速,差速和驱动车轮的功能。这种结构被称为变速驱动桥。并且由于驱动的是转向轮,所以也被称为转向驱动桥。此种驱动桥不仅结构紧凑,也减轻了传动系统的质量。 关键词:主减速器;差速器;万向节;半轴;结构设计。

Structure design of the Audi A4L automotive drive axle Abstract Function of automotive driving axle is the universal gear entered the engine power delivery, to achieve lower speed, increase the torque of purpose. After changing the direction of power transmission, assigned to the left and right two drive wheels.Normal speed of the vehicle, while allowing for left and right wheels to rotate different rotational speeds.Drive axle final drive, differential, axle shaft, universal joints and other components.At present, the engine front transverse front wheel drive transmission system has been widely applied to many cars, due to such systems of transmission, final drive and differential form a whole, eliminating the drive shaft, but also shorten the transmission route, increases mechanical efficiency of the transmission system.In one drive, it can be completed at variable speed, differential and drive the wheels feature.This structure is referred to as variable-speed transaxle.And because the driver is steering wheel, also known as steering axle.This axle is not only compact and greatly reduced the quality of the transmission system. Keywords: final drive;Differ ential;Universal joints;Half shaft;Structural design.

汽车车桥设计

YC1090货车驱动桥的设计 汽车设计课程设计说明 书 题目:汽车驱动桥的设计 姓名:张华生 学号:2009094643020 专业名称:车辆工程 指导教师:伍强 日期:2011.11.28-2011.12.04

盐城工学院本科生毕业设计说明书2007 一主减速器设计 主减速器是汽车传动系中减小转速、增大扭矩的主要部件,它是依靠齿数少的锥齿轮带动齿数多的锥齿轮。对发动机纵置的汽车,其主减速器还利用锥齿轮传动以改变动力方向。由于汽车在各种道路上行使时,其驱动轮上要求必须具有一定的驱动力矩和转速,在动力向左右驱动轮分流的差速器之前设置一个主减速器后,便可使主减速器前面的传动部件如变速器、万向传动装置等所传递的扭矩减小,从而可使其尺寸及质量减小、操纵省力。 驱动桥中主减速器、差速器设计应满足如下基本要求: a)所选择的主减速比应能保证汽车既有最佳的动力性和燃料经济性。 b)外型尺寸要小,保证有必要的离地间隙;齿轮其它传动件工作平稳,噪音小。 c)在各种转速和载荷下具有高的传动效率;与悬架导向机构与动协调。 d)在保证足够的强度、刚度条件下,应力求质量小,以改善汽车平顺性。 e)结构简单,加工工艺性好,制造容易,拆装、调整方便。 3.1 主减速器结构方案分析 主减速器的结构形式主要是根据齿轮类型、减速形式的不同而不同。 3.1.1 螺旋锥齿轮传动 图3-1螺旋锥齿轮传动 按齿轮副结构型式分,主减速器的齿轮传动主要有螺旋锥齿轮式传动、双曲面齿轮式传动、圆柱齿轮式传动(又可分为轴线固定式齿轮传动和轴线旋转式齿轮传动即行星齿轮式传动)和蜗杆蜗轮式传动等形式。 在发动机横置的汽车驱动桥上,主减速器往往采用简单的斜齿圆柱齿轮;在发动机纵置的汽车驱动桥上,主减速器往往采用圆锥齿轮式传动或准双曲面齿轮式传动。 为了减少驱动桥的外轮廓尺寸,主减速器中基本不用直齿圆锥齿轮而采用螺旋锥齿轮。因为螺旋锥齿轮不发生根切(齿轮加工中产生轮齿根部切薄现象,致使齿

汽车设计课设驱动桥设计

汽车设计课程设计说明书 题目:BJ130驱动桥部分设计验算与校核 姓名: 学号: 专业名称:车辆工程 指导教师: 目录 一、课程设计任务书 (1) 二、总体结构设计 (2) 三、主减速器部分设计 (2) 1、主减速器齿轮计算载荷的确定 (2) 2、锥齿轮主要参数选择 (4) 3、主减速器强度计算 (5) 四、差速器部分设计 (6) 1、差速器主参数选择 (6) 2、差速器齿轮强度计算 (7) 五、半轴部分设计 (8) 1、半轴计算转矩Tφ及杆部直径 (8) 2、受最大牵引力时强度计算 (9) 3、制动时强度计算 (9) 4、半轴花键计算 (9) 六、驱动桥壳设计 (10) 1、桥壳的静弯曲应力计算 (10) 2、在不平路面冲击载荷作用下的桥壳强度计算 (11) 3、汽车以最大牵引力行驶时的桥壳强度计算 (11) 4、汽车紧急制动时的桥壳强度计算 (12)

5、汽车受最大侧向力时的桥壳强度计算 (12) 七、参考书目 (14) 八、课程设计感想 (15)

一、课程设计任务书 1、题目 《BJ130驱动桥部分设计验算与校核》 2、设计内容及要求 (1)主减速器部分包括:主减速器齿轮的受载情况;锥齿轮主要参数选择;主减速器强度计算;齿轮的弯曲强度、接触强度计算。 (2)差速器:齿轮的主要参数;差速器齿轮强度的校核;行星齿轮齿数和半轴齿轮齿数的确定。 (3)半轴部分强度计算:当受最大牵引力时的强度;制动时强度计算。 (4)驱动桥强度计算:①桥壳的静弯曲应力 ②不平路载下的桥壳强度 ③最大牵引力时的桥壳强度 ④紧急制动时的桥壳强度 ⑤最大侧向力时的桥壳强度 3、主要技术参数 轴距L=2800mm 轴荷分配:满载时前后轴载1340/2735(kg) 发动机最大功率:80ps n:3800-4000n/min 发动机最大转矩17.5kg﹒m n:2200-2500n/min 传动比:i1=7.00; i0=5.833 轮毂总成和制动器总成的总重:g k=274kg

驱动桥设计_毕业设计论文

驱动桥设计 摘要 现代工程车辆技术追求高效节能、高舒适性和高安全性等目标。前一项目标与环境保护密切相关,是当代全球性热门话题,后两项目标是车辆朝着高性能化方向发展必须研究和解决的重要课题。转向系统的高性能化是指其能够根据车辆的运行状况和驾驶员的要求实行多目标控制,以获得良好的转向轻便性、较好的路感和较快的响应性。 汽车转向系统是影响汽车操纵稳定性、行驶安全性和驾驶舒适性的关键部分。在追求高效节能\高舒适性和高安全性的今天,电控液压助力转向系统作为一种新的汽车动力转向系统,以其节能、环保、更佳的操纵特性和转向路感,成为动力转向技术研究的焦点。 本文通过查阅相关的文献,介绍了EHPS系统的结构组成和工作原理,在参考现有车型的结构数据的基础上,设计计算转向系的主要参数,确定转向器的结构参数和动力转向部分结构参数,在分析其助力特性的基础上,设计合理的助力特性曲线,并通过MATLAB作出助力特性图,同时提出一种基于车速和转向盘转动角速度的控制策略,根据EHPS系统的特点,通过AMESim和Simulink建立整个系统的模型。通过联合仿真可以得出EHPS系统比HPS系统能提供更好的助力特性和转向路感。 关键词:EHPS;助力特性;结构设计;AMESim与Simulink建模 ABSTRACT

High effective energy saving,high comfort performance and high security are thegoals of contemporary.The first goal closely concerns with environment protecting,is also the popular topic around the world.The last two goals are the important subjects must be researched and solved in making automobile high performance.To make the steering system high performance is that the system can carry out mufti-goals control according to the vehicle states and drive requirements to acquire the steering handiness,better road feeling,better anti-interfering performance and faster response. The motor turing system is the essential part which affects the automobile operation stability,the travel security and the driving comfortablet.Nowadays we pursue highly effective energy conservation,the high comforrtableness and high secure.The electrically hydraulic power steering (EHPS) taking as one kind of new automobile power steering system,it takes the power steering engineering research the focal point by its energy conservation,the environmental protection,the better handling characteristic and changes the road feeling. According to consult relevant literature, this paper introduces the structure and the principle of EHPS, bases the further study of EHPS on the structural parameter date of a certain type of the light lorry, calculates the main parameters of steering system and power steering and devises the hydraulic circuit of EHPS. On the basis of the analysis of EHPS, this paper designs a reasonable EHPS power curve, including plotting the curve with the technique of MATLAB. Taking into account the steady steering and emergency steering, it advances the control strategy plan based on speed, steering wheel angle velocity, the steering wheel torque. Based on the structural characteristics of EHPS, this paper proposed AMESIM and SIMULINK joint simulation of the entire EHPS system. Accord to the result we can know that EHPS can offer more secure handle, more saving energy and way feeling. Key words:EHPS;Characteristics of power; Structure design; AMESim and Simulink Modeling

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