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别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)

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别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)(任务书,开题报告,外文翻译,文献摘要,论文说明书10500字,CAD图7张,CATIA三维图)
摘要
电动助力转向系统是在原本的机械转向系统上附加上一个电机输出电能转化为机械能实现助力作用。很大程度上是依靠电子控制装置,将电能转化为机械能来帮助驾驶员完成转向任务,以此获得转向轻便性。电动助力转向系统是由控制部分,执行部分和程序三部分组成。电动助力转向系统是一种目前正在大力研究与发展并逐步完善成熟的转向系统。助力转向的意义在于能够显著提高汽车的各项性能,提升驾驶员在行驶过程中的乘坐舒适性和驾驶舒适性,并能适当减轻环境污染。不仅制造成本低,减少能源的消耗,而且在环境污染方面也大大减轻,并且能够保证车辆行驶过程中在各种工况下都能提供助力转向,大大提升了行驶安全性,装配简单,操纵轻便,提升了行驶稳定性。
电动助力转向系统是一种集机械传动与电机助力于一体的汽车转向系统。
本文主要涉及别克英朗7152型汽车电动助力转向系统的研究,包括方向盘,转向轴,齿轮齿条转向器的设计与校核等并利用CATIA和CAD软件进行工程制图工作。
关键词:电动助力转向系统;转向轴;齿轮齿条转向器;
 
Abstract
The electric power steering system adds a motor output power to the mechanical energy on the original mechanical steering system to assist the power. To a large extent, it relies on electronic control devices to transform electrical energy into mechanical energy to help drivers complete their steering tasks, so as to obtain steering portability. It mainly uses electronic control devices to help drivers turn to get the best steering force characteristics. The electric power steering system uses the power generated by the motor to assist the driver in the power steering. The electric power steering system consists of three parts: control part, execution part and procedure. Automotive electric power steering system is a new system that helps drivers turn to the forefront of technology. The significance of the power steering is that it can significantly improve the performance of the car, improve the driver's ride comfort and driving comfort in the course of driving, and reduce the environmental pollution properly. Electric power steering system is a trend in the future development of vehicle steering system. Not only is the cost of the manufacturing low, the energy consumption is reduced, but also the environmental pollution is greatly reduced, and it can guarantee the power steering in all the working conditions, which greatly improves the driving safety, the assembly is simple, the manipulation is light, and the stability of the driving is improved.
Electric power steering system is a vehicle steering system that combines mechanical transmission and motor assistance.
This paper mainly deals with the research on the electric power steering system of Buick 7152 type automobile, including the design and checking of the steering wheel, the steering axis, the gear and rack steering gear and the drawing of the three-dimensional and two-dimensional maps using the software of CATIA and CAD.
Key words: electric power steering system; rack and pinion steering gear;

车辆相关数据及设计要求
车辆数据 :
车    型 :别克英朗7152型
驱动方式 :前置前驱
总 质 量(Kg):1770
整备质量(Kg):1345
轴    距(mm):2700
发动机功率(kw/rpm):84/6000
发动机最大扭矩(Nm/rpm):143/4300
轮胎规格:205/55R16
满载时轴荷分配(Kg):895/875
前轮距(mm):1534                    后轮距(mm):1552
转向节臂长(mm):200
对动力转向机构的要求:工作灵敏。转向盘有自动回正功能。方向盘转角与转向轮转角之间在运动学上要相应成比例。当动力转向发生故障时,转向系统仍可使车辆正常进行转向操作。车辆进行转向时,驾驶员作用在方向盘上的切向力不应大于150-200 N。操纵轻便当汽车路面行驶过程中受到地面的冲击时,传递给方向盘的反向冲击应尽可能小。
 

别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)
别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)
别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)
别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)
别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)
别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)
别克英朗7152型轿车电动助力转向系设计(含CAD零件装配图,CATIA三维图)


目录
摘要    I
第1章绪论    1
1.1转向系统简介    1
1.1.1 转向系的设计要求    1
1.2 EPS的特点及发展现状    2
1.2.1 EPS的特点    2
1.3本课题的研究目的及意义    2
1.4 本章小结    3
第2章电动助力转向系统的组成    4
2.1电动助力转向系统的机理及类型    4
2.1.1电动助力转向系统的类型    5
2.2电动助力转向系统的各主要组成部件部件及其选型    7
2.3电动助力转向特性    10
2.4 本章小结    11
第3章 电动助力转向系设计方案选定    12
3.1 车辆相关数据及设计要求    12
3.2转向轴的设计和校核    12
3.2.1 转向轴的设计    12
3.2.2 转向轴的校核    14
3.3齿轮齿条式转向器的设计    16
3.3.1转向轮侧偏角计算    16
3.3.2 转向器转向阻力矩的计算    17
3.3.3 计算转向器的角传动比和力传动比    18
3.3.4齿轮齿条的设计    20
3.3.5转向横拉杆的运动分析介绍    26
3.3.6齿轮齿条传动受力分析    27
3.3.7齿轮轴的强度校核    28
3.4 本章小结    30
第4章结论    31
参考文献    32
附录A    33
附录B    35
致谢    37