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汽车转向节的建模及有限元分析

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汽车转向节的建模及有限元分析,汽车,转向,建模,有限元分析
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汽车 转向 建模 有限元分析
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汽车转向节的建模及有限元分析,汽车,转向,建模,有限元分析
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毕 业 设 计(论 文)任 务 书 设计(论文)题目:汽车转向节的建模及有限元分析 学生姓名:任务书填写要求1毕业设计(论文)任务书由指导教师根据各课题的具体情况填写,经学生所在专业的负责人审查、系(院)领导签字后生效。此任务书应在毕业设计(论文)开始前一周内填好并发给学生。2任务书内容必须用黑墨水笔工整书写,不得涂改或潦草书写;或者按教务处统一设计的电子文档标准格式(可从教务处网页上下载)打印,要求正文小4号宋体,1.5倍行距,禁止打印在其它纸上剪贴。3任务书内填写的内容,必须和学生毕业设计(论文)完成的情况相一致,若有变更,应当经过所在专业及系(院)主管领导审批后方可重新填写。4任务书内有关“学院”、“专业”等名称的填写,应写中文全称,不能写数字代码。学生的“学号”要写全号,不能只写最后2位或1位数字。 5任务书内“主要参考文献”的填写,应按照金陵科技学院本科毕业设计(论文)撰写规范的要求书写。 6有关年月日等日期的填写,应当按照国标GB/T 740894数据元和交换格式、信息交换、日期和时间表示法规定的要求,一律用阿拉伯数字书写。如“2002年4月2日”或“2002-04-02”。毕 业 设 计(论 文)任 务 书1本毕业设计(论文)课题应达到的目的: 通过本次毕业论文要求学生能够利用有限元软件对汽车转向节进行分析与研究,其目的在于培养学生综合分析和解决相关问题的独立工作能力,拓宽和深化学生的知识;培养学生正确使用技术资料,国家设计手册;正确进行数据处理,编写技术文件等方面的工作能力;使学生养成良好的工作态度,工作作风。同时掌握进行调查研究、面向实际、面向生产,面向工人和工程技术人员学习的工作方法。 2本毕业设计(论文)课题任务的内容和要求(包括原始数据、技术要求、工作要求等): 介绍汽车转向节的发展历史和现状,介绍汽车转向节的结构,对转向节的发展概括进行介绍,首先根据汽车转向节的参数,运用CATIA软件,对其进行三维建模设计,其次进行有限元分析,运用ANSYS软件,对汽车转向节在三种典型工况下的受载情况进行应力分析、强度分析、模态分析以及疲劳分析,最后得出分析结论。要求研究内容正确,完整,符合论文撰写规范,工作量充足。毕业设计文笔流畅,叙述清晰。应具备计算机一台,CATIA软件ANSYS软件,相关文献从校园期刊网获得。 毕 业 设 计(论 文)任 务 书3对本毕业设计(论文)课题成果的要求包括图表、实物等硬件要求:按期完成一篇符合金陵科技学院论文规范的毕业设计(毕业论文)1.5万字以上(并附相关的分析数据,图表),能详细说明研究思路;能有结构完整,合理可靠的技术方案;能有相应的设计说明,图纸和技术参数说明,并将验证结果在文中列出。 4主要参考文献: 1刘惟信.论现代汽车设计及其发展趋势J.汽车与社会,1996,1(1)2李尊荣,傅翔.现代锻造生产线的设计J.锻压技术,1996,(3)3张运军,胡道才.汽车转向节的锤上模锻工艺J.锻压机械,1999(1)4高占民,杨慎华.轻型车左转向节臂锻造工艺分析J.1999(8)5董之社.轿车转向节锻件半封闭挤压工艺J.2000(6)6郑运廷,马宇,姬振华.矿用汽车转向节成型过程模拟分析J.河南科学,2006(24)7赵德颖,孙慧学,张春义.轿车转向节闭塞挤压成形新工艺研究J.锻压技术.2006(1)8 赵德颖,孙慧学.轿车转向节闭塞挤压成形过程研究J.塑性工程学报,2006,139 赵德颖,孙慧学,苏升贵,数值模拟在轿车转向节闭塞挤压成形中的应用J.热加工工艺,2007,3610徐宁宁,刘文新,许树勤.盘式转向节模锻的有限元模拟与实验研究J.锻压装备与制造技术,200911冯美斌.转向节的强度和实验J.汽车科技,199412刘惟信主编,汽车设计M.北京:清华大学出版社,200113董启生,付茂华.汽车前桥转向节失效因素探析及预防J.山东机械,200414李维拥,周舰,李桂茹.转向节臂失效分析J.汽车技术,1988(1)15蒋玮.转向节有限元分析及实验验证J.车辆与动力技术,2008毕 业 设 计(论 文)任 务 书5本毕业设计(论文)课题工作进度计划:2015.12.05-2016.01.15确定选题,填写审题表;指导教师下发任务书,学生查阅课题相关参考文献、资料,撰写开题报告。2016.01.16-2016.02.25提交开题报告、外文参考资料及译文、毕业设计(论文)大纲;开始毕业设计(论文)。2016.02.26-2016.04.15具体设计或研究方案实施,提交毕业设计(论文)草稿,填写中期检查表。2016.04.16-2016.05.05完成论文或设计说明书、图纸等材料,提交毕业设计(论文)定稿,指导老师审核。2016.05.06-2016.05.13提交毕业设计纸质文档,学生准备答辩;评阅教师评阅学生毕业设计(论文)。2016.05.13-2016.05.26根据学院统一安排,进行毕业设计(论文)答辩。所在专业审查意见: 通过 负责人: 2016 年 1 月 22 日毕 业 设 计(论 文)开 题 报 告 设计(论文)题目:汽车转向节的建模及有限元分析 学生姓名:开题报告填写要求 1开题报告(含“文献综述”)作为毕业设计(论文)答辩委员会对学生答辩资格审查的依据材料之一。此报告应在指导教师指导下,由学生在毕业设计(论文)工作前期内完成,经指导教师签署意见及所在专业审查后生效;2开题报告内容必须用黑墨水笔工整书写或按教务处统一设计的电子文档标准格式打印,禁止打印在其它纸上后剪贴,完成后应及时交给指导教师签署意见;3“文献综述”应按论文的框架成文,并直接书写(或打印)在本开题报告第一栏目内,学生写文献综述的参考文献应不少于15篇(不包括辞典、手册);4有关年月日等日期的填写,应当按照国标GB/T 740894数据元和交换格式、信息交换、日期和时间表示法规定的要求,一律用阿拉伯数字书写。如“2004年4月26日”或“2004-04-26”。5、开题报告(文献综述)字体请按宋体、小四号书写,行间距1.5倍。 毕 业 设 计(论文) 开 题 报 告 1结合毕业设计(论文)课题情况,根据所查阅的文献资料,每人撰写不少于1000字左右的文献综述: 选题的目的和意义:随着我国交通运输事业的迅猛发展,汽车在我国交通运输行业的使用日益普遍。转向节是汽车底盘中的重要零件之一,它与汽车的悬架、前车轴、转向系传动机构和制动器相连接,具有承受汽车前部载荷、带动前轮实现汽车转向等功能。并且它的安全性也直接影响着汽车整体安全、影响着驾驶员和乘车者的安全。因此,汽车转向节的研究对于提高车辆的使用可靠性和安全性具有重大的意义。国内外研究现状:转向节是汽车上的重要零件,它的主要功能是承载和转向,即支撑车体重量,传递转向力矩和带动前轮绕主销转动而使汽车转向等。因此,对转向节的外形结构和机械性能有严格的要求。国内外诸多学者对汽车转向节的研究主要有两类。第一类研究主要是对转向节的制造工艺和加工方法等方面进行研究。李尊荣、傅翔在现代锻造生产线的设计中对重型汽车转向节的热模锻工艺进行研究;罗晴岚、罗延杰在在 63 MN 热模锻压力机上生产模锻件的分析中研究了热模锻生产线上转向节的工艺特点和模锻变形力等;张运军、胡道才的汽车转向节的锤上模锻工艺和高占民、杨慎华的轻型车左转向节臂锻造工艺分析讨论了汽车转向节及转向节臂的锻造工艺,认为采用锤上锻操作方便,节省材料;董之社在轿车转向节锻件半封闭挤压工艺中提出采用半封闭挤压生产工艺,与锤锻相比单只锻件可节约原材料1kg。郑运廷,马宇,姬振华在矿用汽车转向节成型过程模拟分析中采用刚塑性有限元法对矿用汽车转向节预锻成形进行二维模拟。一些国外研究者提出了转向节的半固态成形工艺,并对半固态成形汽车转向节进行了深入研究,取得一定进展。第二类研究主要是对转向节的强度、刚度、疲劳失效等方面进行研究。近年来,有限元分析软件的大量应用为分析转向节提供了有力的工具。陈黎卿,谭继锦,姜武华在基于ANSYS的转向节有限元分析中利用有限元分析软件对转向节的受力按照三种典型工况进行计算分析,得到了转向节结构设计的薄弱环节,为改进设计提供了依据;张红旗等人在基于ANSYS的客车转向节有限元分析中同样利用ANSYS软件分析了在三种工况下的转向节的静态应力,确定该转向节满足静强度要求;郭彬彩在STEYR转向节建模与强度分析中利用Solid works建立了转向节实体模型,通过接口导入中计算了典型工况的静强度;王红卫、韩国立在基于ANSYS的矿用汽车转向节可靠性分析中,将三维软件建立的实体模型导入ANSYS后,应用蒙特卡洛法分析了转向节的可靠性;也研究了该类斯太尔转向节,将Pro/E建立的转向节导入ANSYS进行强度计算,并对转向节进行了模态分析;蒋玮在转向节有限元分析及试验验证中采用Hyper mesh 软件对某转向节进行网格划分,并进行了应力分析和疲劳分析;一些国外学者运用MSC. Fatigue 软件对转向节和转向节臂进行疲劳仿真估算了疲劳寿命,并提出了改进疲劳强度措施;他们还基于可靠性优化设计方法,建立了长杆类转向节的有限元分析模型,在有限元分析的基础上对转向节的疲劳寿命进行了研究。参考文献:1李尊荣,傅翔.现代锻造生产线的设计J.锻压技术,1996,(3):7-122罗晴岚,罗延杰.在63MN热模锻压力机上生产模锻件的分析J.汽车工艺与材料,1998(5):4-93张运军,胡道才.汽车转向节的锤上模锻工艺J.锻压机械,1999(1): 26-284高占民,杨慎华.轻型车左转向节臂锻造工艺分析J.汽车技术,1999(8): 23-245董之社.轿车转向节锻件半封闭挤压工艺J.锻压技术,2000(6): 9-106郑运廷,马宇,姬振华.矿用汽车转向节成型过程模拟分析J.河南科学,2006, 24(4): 551-5537E. Doege. Thixo-Schmieden von stahl. Neuere Entwicklungen in der Massivumformung J. DGM Massivumformung, 20038GHirt, R.Cremer, T.Witulski. Lightweight near net shape components produced by thixoformingJ.Materials&Design, 1998, 18(4): 315-3219陈黎卿,谭继锦,姜武华.基于ANSYS的转向节有限元分析J.机械工程师,2005 (11): 57-5810张红旗,曹文刚,徐涛.基于ANSYS的客车转向节的有限元分析J. CAD/CAM与制造业信息化,2002(9): 25-2711郭彬彩.STEYR转向节建模与强度分析J.河南科学,2006, 24 (2): 272-27312王红卫,韩国立.基于ANSYS的矿用汽车转向节可靠性分析J.煤矿机械,2007, 28 (4): 109-11113蒋玮.转向节有限元分析及试验验证J.车辆与动力技术,2008 (4): 5-814Peter J.Heyes,林晓斌.基于有限元的疲劳设计分析系统MSC/FATIGUEJ.中国机械工程,1998(11):12-1515 Mehrdad Zoroufi. Manufacturing Process Effects on Fatigue Design and Optimization of Automotive Components -An Analytical and Experimental Study D. Ohio:The University of Toledo, 2004毕 业 设 计(论文) 开 题 报 告 2本课题要研究或解决的问题和拟采用的研究手段(途径): 本课题要研究或解决的问题根据某汽车转向节的参数,运用CATIA软件,对其进行三维建模设计,其次进行有限元分析,运用ANSYS软件,对汽车转向节在三种典型工况下的受载情况进行应力分析、强度分析、模态分析以及疲劳分析,最后得出分析结论。 采用的研究手段(1)做好理论基础方面的准备,如有限元软件。 (2)查阅大量有关书籍和论文,学习关于课题领域的研究方法。 (3)制定出项目预定目标和研究步骤并实施。 (4)加强与指导老师和专业人员的交流,探讨解决遇到的疑难问题。 毕 业 设 计(论文) 开 题 报 告 指导教师意见:1对“文献综述”的评语:文献综述基本符合毕业论文课题研究的方向,与所学专业联系比较紧密。在查阅相关资料后进行了总结,基本符合文献综述的特点与要求。 2对本课题的深度、广度及工作量的意见和对设计(论文)结果的预测:本课题深度广度适中,工作量符合毕业论文要求;经过认真充分的准备工作,应当能够如期完成毕业论文工作。 3.是否同意开题: 同意 不同意 指导教师: 2016 年 03 月 07 日所在专业审查意见:同意 负责人: 2016 年 04 月 07 日毕 业 设 计(论 文)外 文 参 考 资 料 及 译 文译文题目:Automotive safety systems and technology research and analysis 汽车安全系统技术研究与分析 学生姓名:专业:所在学院:指导教师:职称:Automotive safety systems and technology research and analysisAbstract: auto parts of good and bad will directly affect the safety of the car, are directly related to the peoples life safety and security in wealth. This article mainly from the cars active safety technology and passive safety technology two aspects elaborated the importance of car parts, and how to improve the safety of the car. Key words: automobile, active safety technology, passive safety technology As traffic tools of the modernization and absolute number increase sharply, traffic accidents are also increasing. Car accident has become severe global social issues. Undoubtedly, advanced auto safety facilities are the driving safety indispensable safeguard. So, we should start, from technology to research and development of high performance, high safety car, also want to strengthen the regular inspection in cars, so timely maintenance investigation, make cars often in good technical status, so as to improve the safety performance of the car. Here we introduced active safety technology and automobile car passive safety technology. Auto safety is according to the traffic accident happened before and after the classified. One is in a traffic accident take safety measures, especially before immediately will produce risk condition, drivers manipulate the steering wheel avoid or emergency brake to avoid traffic accidents. In the car, drive in usually to ensure the basic manipulation stability, drivers on the surrounding environment and to ensure the visual recognition sex drive the car itself, developed the basic performance ant-lock braking system (ABS), prevent slippery drive system (ASR), active suspension, power steering and four-wheel drive (4WD), four-wheel steering (4WS), lighting system, wiper, the rearview mirror, prevent from rear-end collision car alarm system and laser radar, etc. These security devices and technology, called active safety system, can also be called preventive security system. On the other hand, in order to reduce traffic accidents and company by personnel directly suffer degree, ensure company take staff and pedestrian safety, says the security for passive safety, can also be called conflict safety. When after the accident, in order to prevent disasters, including prevent the expansion of fire and make crew from traffic accident can extricate the security devices and systems, called prevent disaster expand security system. OneAutomobile active security technology 1. ABS braking system Ant-lock Braking System (Braking System, lock do by ABS computers as ABS), hydraulic device, the wheel speed sensors, brake hydraulic pipeline and electrical wiring etc. Their structures are shown below. ABS tasseled for the car in various driving conditions braking performance and brake safety particularly important, especially is emergency braking, can make full use of the peak between tire and road surface adhesion properties, improve performance and reduce automobile fight sideslip braking distance, give full play to the braking performance, but also increase the automobile braking process control. So as to reduce the possibility of car accidents. No installation ABS car, if the driving force trample brake pedal, wheel will rapidly lower speed, and finally wheels stop turning, but body because of inertia remains forward sliding. This phenomenon was at the wheel and pavement occur between larger slip, appear this kind of situation, the car tires of automobile lateral spreads almost disappear, so poor force will appear the following phenomena: (1) Steering stability fall: the steering wheel is ineffective, vehicle tail manipulation of curl, serious when vehicle circles or appear folding phenomenon; (2) Handling fall: manipulate the steering wheel and short of steering requirements; (3) Braking distance extended: more than general braking distance. So, we can imagine to have installed ABS system of the car safety is very important. 2the ASR drive torque control system ABS are used to prevent car braking process wheel lock, will wheel sliding rate control in ideal range, so as to shorten the braking distance, improve automobile braking direction stability and steering control, so as to improve the safety of the car. Along with the increase of vehicle performance requirements, not only in braking process required to prevent wheel lock, and asked the driver to prevent drive roller skating turn in the process, making cars in the direction stability, driving process steering control ability and acceleration performance, so are improved by the car drive torque steering system ASR (Accelerations Regulation) Slip. ASR is the perfect complement and ABS ASR, but most alone is set with ABS combined together, commonly used ABS/ASR says, called antiskid control system. ASR is mainly used to prevent car in the beginning, accelerate the wheels, guarantee slip in the car accelerated rate and improve the stability in bad pavement drive attached conditions. It makes no difference speed in the car lock ice roads and muddy road started and to improve its capacity, also can prevent high in speed by turning cars gliding pavement and rear lateral spreads phenomenon. Anyhow, prevent the wheel because ASR slip, can maximize the engine driving moment of cars had enough, ensure the longitudinal force, lateral force and manipulation of power, make cars in starting, steering and accelerate the process, in gliding and muddy road, in a mountain area downhill process can steadily driving, guarantees the safety, reducing tire wear and fuel consumption, and improves the car driving capability. 3VDC system ABS/ASR system successfully solves the brake and the car when driven direction stability problem, but cannot solve the vehicle steering stability problem driving direction. For example when steering road, inevitably by lateral and longitudinal force, only local surface can provide full lateral and longitudinal force, the pilot can control vehicles. If the ground adhesion ability lower lateral, will damage cars driving ability predetermined direction. Rainy days cars driving, often high-speed steering lateral sliding out, it is the ground because of insufficient lateral adhesion ability. To resolve the issue, and developed countries automobile industry recently in ABS/ASR system on the basis of the development of dynamic Control system (into car Dynamics Control, the abbreviation VDC Vehicle). The system of the car brake, driving, suspension, steering, engine and so on various main assembly control system in function, structure organic ground comprehensive together, can make cars in all kinds of bad working conditions, such as ice road pavement, commuting, river bend pavement and took evasive action moving line, braking and acceleration and the downhill for different conditions, such as bearing, different type pressure and different levels of type wear all have good direction stability, to show the best driving performance. VDC applications, in braking, acceleration and steering aspects of drivers fully released request, is the car of active safety driving a new milestone. VDC of steering control system is mainly by driving for each wheel brake control and engine power output control to realize. For example, if the car turn left front wheel for steering the inadequate capacity tend to slip out of the corner, VDC system can measure imminent, just know lateral spreads left rear brake adopt appropriate measures. If at the same corner, because rear wheel tend to slip out of favor of lateral overmuch, VDC system is proper braking to front-right wheel failure, maintain the stability of the vehicle driving. In extreme cases, VDC system can also take reduce engine to reduce the power output, and to reduce the speed of the demand side adhesion ability to maintain the stability of the vehicle driving. Adopt VDC system, automobile in folio pavement or corner of pavement braking distance still can further reduce. 4 CCS cars cruise control system Auto cruise Control System (Cruiser Control System, abbreviation for CCS) is can make automobile work in engine favorable speed range, reduce drivers driving manipulate labor intensity, improve the driving comfort the automatic driving device. Car cruising system (CCS) role is required by the driver: after a normally-closed switch, no speed on the accelerator pedal can automatically keep the speed, make the vehicle with the fixed speed. Using this device, when on the highway after a long time, the driver driving not have to control the accelerator pedal, reduce fatigue, while reducing unnecessary speed change, can reduce save fuel. Auto cruise control system is the earliest development of the automotive electronic control system. This system uses another speed sensor, will speed signal input engine control microcomputer, by microcomputer control vacuum system work. This system can make use of the server, speed control switch lever and brake pedal on vacuum lift switches etc, its function and basic system the same. In this system, electronic control device can accord change of driving resistance, automatic regulation engine throttle Angle, make the speed constant. Such not only reduce unnecessary speed change, which saves fuel, also reduced the drivers burden. Two. Automobile passive safety technology 1. Seat belt Car seat belt is a safety device, it can in car collision or sharp turn, make crew to keep its original position as possible without mobile and rotation, avoid collision with in-car hard parts caused damage. Seat belts and airbags, as modern cars are safety devices, but the long history of the former, popularize the scope. The seemingly simple seat belt actually not simple. Attention has been at the forefront of traffic safety, through the analysis of general motors after a car accident found: seat belt not only makes people protect the lives, can be in more than half of the accident to reduce or even eliminate drivers, motorists are the chance of injury. Car collision or unexpected emergency braking force generated great inertia, will allow the driver and passenger and car windscreen, steering wheel, seat, collision happened objects such as secondary to drive is caused extremely easily crew serious damage, even drive occupant seats or threw the apex, seat belts can will ride in the seat. Bondage personnel When has the accident, which can effectively prevent the collision, and its buffer role can absorbs a great deal of kinetic energy, reduce rides personnel extent of the injuries. Fasten your seat belt airbags play our role is also an important condition. Because the airbag to maximize role for the ride in the impact of the physical location, sitting instant action have extremely strict and the requirements. Otherwise, the airbag started strong instantaneous wallops to head are fragile site, may cause serious damage, especially for children, this damage can be fatal. Even the most ordinary three belts, try a can timely in crash that lived rides the bundle, ensure the upper part of a ride in the airbag fully extended range, make the airbag most effectively play efficacy. Accordingly, must not because the car is equipped with airbags and feel carefree seat belt fastened, only to reduce or eliminate the traffic accident happen. 汽车安全系统技术研究与分析摘要:汽车零部件的好与坏将直接影响汽车行驶的安全性,直接关系着人们的生命安全和财富安全。本文主要从汽车的主动安全技术和被动安全技术两方面来阐述汽车零部件的重要性,以及如何提高汽车行驶的安全性。关键词:汽车、主动安全技术、被动安全技术 作为现代化的交通工具和绝对数量的急剧增长,交通事故也在不断增加。交通事故已成为严峻的全球性社会问题。毫无疑问,先进的汽车安全设施是行车安全不可缺少的保障。所以,我们应该从技术研发方面入手,努力研究开发高性能、高安全性的汽车,同时也要加强对在用汽车的定期检查,以便及时检修,使汽车经常处于良好的技术状况,从而高汽车行驶的安全性能。这里我们重点介绍汽车主动安全技术和汽车被动安全技术。汽车的安全性是按交通事故发生的前后加以分类的。一方面是在交通事故发生之前采取安全措施,特别是在马上会产生危险状况时,驾驶者操纵方向盘,避免或紧急刹车,以避免交通事故发生。汽车在通常的行驶中,为确保驾驶者的基本操纵稳定性,对周围环境的视认性和汽车本身的基本行驶性能,开发了防抱死制动系统(ABS)、防滑驱动系统(ASR)、主动悬架、动力转向、四轮驱动(4WD)、四轮转向(4WS)、灯光照明系统、刮水器、后视镜、防止车辆追尾的车距报警系统和激光雷达等。这些安全装置和技术称为主动安全系统,也可称为预防安全系统。另一方面,为了尽量减少交通事故和降低司乘人员直接受害程度,保证司乘人员和行人的安全,我们称这种安全性为被动安全,也可称为冲突安全。当事故发生后,为了防止灾害的扩大,包括防止火灾和使乘员能从事故车辆中解脱出来的安全装置和系统,被称为防止灾害扩大的安全系统。一、汽车主动安全技术1.ABS防抱死制动系统防抱死制动系统(Anti-lock Braking System,简称ABS)由ABS电脑、液压装置、车轮转速传感器、制动液压管路及电器配线等组成。ABS系统对汽车在各种行驶条件下的制动性能及制动安全尤为重要,特别是紧急制动,能够充分利用轮胎和路面之间的峰值附着性能,提高汽车抗侧滑性能并缩短制动距离,充分发挥制动效能,同时增加了汽车制动过程中的控制。从而降低了汽车事故发生的可能性。 没有安装ABS的汽车,如果在行驶中用力踩踏制动踏板,车轮会急速降低转速,最后车轮停止转动,但车身但车身因为惯性仍然向前滑动。这种现象在车轮与路面之间发生较大的“滑移”,出现这种状况时,汽车轮胎的横向扩散几乎消失,于是会出现下述现象:(1)转向稳定性下降:方向盘不灵,车辆尾部上翘,严重时车辆打转或出现折叠现象;(2)操纵性下降:操纵方向盘而达不到转向要求;(3)制动距离延长:超过一般的制动距离。所以,可想而知装设ABS系统对汽车行驶的安全性是非常重要的。2ASR驱动防滑控制系统ABS用于防止汽车制动过程中车轮抱死,将车轮的滑移率控制在理想的范围内,以缩短制动距离,提高汽车制动时方向稳定性和转向操纵性,从而提高汽车行驶的安全性。随着对汽车性能要求的提高,不仅要求在制动过程中防止车轮抱死,而且要求在驱动过程中防止驱动轮滑转,使汽车在驱动过程中的方向稳定性、转向控制能力和加速性能都得到提高,因此采用了汽车驱动防滑转向系统ASR(Accelerations Slip Regulation)。ASR是ABS的完善和补充,ASR可单独设置,但大多数
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