摘 要
本文先对国内外电动助力转向系统（EPS）进行了解，然后对EPS的基本机构及工作原理进行了研究。在传统的机械转向系统上添加电子控制设备、传感器设备与转向助力系统等就构成了EPS。EPS拥有体积小、重量轻、结构简单、安装和维修方便、节能环保的优点，而且拥有突出的性能，能够跟着车速变化来进行调整转向助力大小取得不同的转向路感，可广泛应用于轿车、货车等许多车型，是现在汽车技术发展的研究热点和重点。本文的主要工作是对电动助力转向系统扭杆的结构设计，并运用CAD和Pro/E对其进行了二维和三维设计。
本文针对C-EPS扭杆零件的结构设计进行了深入研究。首先介绍了C-EPS扭杆零件的基本功能和特点，然后详细阐述了其结构设计方案，包括材料选择、形状设计、尺寸确定等方面。最后，本文还对C-EPS扭杆零件的结构设计进行了总结，指出了其优点和不足之处，并提出了改进建议。
关键词：C-EPS；扭杆；结构设计；强度；刚度。
Abstract
In this paper,the domestic and foreign electric power steering system (EPS) is understood.Then the basic structure and working principle of EPS are studied.In the traditional mechanical steering system to add electronic control equipment, sensor equipment and steering power system, such as the composition of the EPS.EPS has the advantages of small size, light weight, simple structure, convenient installation and maintenance, energy saving and environmental protection,and has outstanding performance,be able to follow the speed change to adjust the steering power to achieve a different steering sense of the road,can be widely used in cars, trucks and many other models,Is the research focus and focus of the development of automotive technology.The main work of this paper is the structural design of the outer pull rod of the electric power steering system.The use of Pro/E and CAD on the two-dimensional and three-dimensional design
This paper studies the structural design of C-EPS torsion bar parts. It introduces the basic functions and features of C-EPS, then expounds the structural design scheme, including material selection, shape design, size determination and so on. Finally, the paper also summarizes the structural design of C-EPS twisted rod parts, points out its advantages and disadvantages, and makes improvement suggestions.
Key words: C-EPS; twisted rod; structural design; strength and stiffness.
目 录
摘 要
Abstract
1 绪论
1.1 概述
1.2 国外EPS的发展现状
1.3 国内EPS的发展现状
1.4 EPS的优点
1.4.1 提高操纵轻便性和高速稳定性
1.4.2 节能环保
1.4.3 提供可变的转向助力特性使用范围广
1.4.4 提高主动安全性
1.5 EPS的发展趋势
1.5.1 转向器与电动机
1.5.2 控制理论
1.5.3 自动转向与全电动转向系统
2 电动助力系统的总体结构
2.1 电动助力系统的工作原理
2.2 电动助力系统的结构
2.2.1 机械式转向器
2.2.2 助力电机
2.2.3 传感器
2.2.4 减速机构
3 电动助力系统的扭杆二维结构设计
3.1 球头销
3.2 左转向扭杆接头
3.3 左扭杆组合
4 电动助力系统的扭杆三维结构设计
4.1 球销
4.2 左转向扭杆接头
4.3 装配图
5 总结与展望
5.1 本文总结
5.2 本文展望
参考文献
致 谢
