汽车转向系统EPS设计(论文).docx

电助力转向系统（Electric Power Steering system）作为转向助力新的研究方向，因为具有节能、环保、占用空间小、反应灵敏等优点受到广大汽车公司和科研人员的青睐。毋庸置疑，电助力在不久的将来将会完全取代传统的液压转向系统。汽车转向系统的应用按先后顺序可以分为：机械转向系统、液压助力转向系统、电子控液压助力转向系统、电助力转向系统等。 本文研究的是齿条助力式转向装置。其以齿轮齿条转向器的设计为核心，主要包括转向操纵机构设计、齿轮齿条传动设计、转向梯形机构设计和控制系统的硬件选择等。电助力转向系统工作过程中，当驾驶员转动方向盘时，扭矩传感器和车速传感器会将信息传输给控制器，使其发出命令控制电机的正反转和输出力矩的大小。从而使驾驶员可以轻松地驾驶汽车和增加汽车的转向灵敏性。 关键词 电助力 转向系统 齿轮齿条 自动控制 汽车转向系统EPS设计 毕业设计外文摘要 Title The design of automotive steering system Abstract Electric power steering is a new power steering technology for vehicles. Merit such as energy conservation , environmental protection，fast reaction and small footprint that the person has accepts the respectively big automobiles of company and the reserchers favour .Needless to say,home and abroad developing trend is to use electric power-assistance to change to the hydraulic pressure power-assistance vergence substituting tradition in future.Automotive steering system application can be divided into：Mechanical steering，Hydraulic power steering，Electronically controlled hydraulic steering system，Electronic Power System。 This paper studies the steering rack power device, the design of the steering gear and rack as the core, mainly including the design of steering mechanism, gear and rack transmission design, the design of steering trapezoidal mechanism and control system hardware selection, etc. The working process of the electric power steering system, the driver turned the steering wheel, the torque sensor and speed sensor will transfer the information to the controller, make it a command control and reversing and the size of the output torque of the motor. So that the driver can easily drive a car and increase automobile steering sensitivity. Key Words Electric Power Steering System Gear and Rack Automatic control 本 科 毕 业 设 计（论文）第 I页 共 I 页 第 I页 共 I 页 本 科 毕 业 设 计（论文） 目 录 HYPERLINK \l _Toc29305 TOC \o 1-3 \h \u HYPERLINK \l _Toc22380 1 引言 PAGEREF _Toc22380 1 HYPERLINK \l _Toc30152 1.1汽车转向系统简介 PAGEREF _T