全文总字数：13576字
1. 研究目的与意义（文献综述）
1. purpose and significance of the research
the steering system is the basic component of the whole vehicle system, which ensures that the vehicle is able to run in a way that meets the driver's needs. the steering system also ensure that when the vehicle is accidentally impacted by the road and deviates from the driving direction by accident, it can cooperate with the driving system to keep the vehicle running stably. therefore, the performance of the steering system directly affects the handling stability and comfort of the vehicle, and it is also the key assembly of the active safety of the vehicle. especially in today's high-speed vehicles, non professional drivers and intensive traffic flow, it plays an important role in ensuring the safe driving of vehicles, reducing traffic accidents, protecting the personal safety of drivers and improving the working conditions of drivers. hence, it is necessary to design a proper steering system for a vehicle. [1]
the power steering system is a device to reduce the operating force of the driver's action on the steering wheel and generate steering assistance force by using external power. on the basis of the traditional mechanical steering system, according to the torque signal on the steering wheel and the driving speed signal of the car, the electronic control device makes the motor generate the corresponding size and direction of the auxiliary power to assist the driver in steering operation.
2. 研究的基本内容与方案
1. basic contents of research (design), proposed technical scheme and measures
1.1 main research contents
the main work of this project is: according to the given vehicle parameters , i need to design the steering system of shanghai volkswagen lavida car . the specific work includes:
3. 研究计划与安排
4.schedule
1-2 (the 18th-19th week of the 7th semester) determine the topic of graduation project, improve the graduation project assignment (relevant parameters), and collect data inside and outside the school
3-4 (the 1st-2nd week of the 8th semester) plan conception, literature search and completion of opening report
4. 参考文献（12篇以上）
5.references
[1]赵燕 ,周斌 ,张仲甫.汽车转向系统的技术发展趋势[j].汽车研究与开发,2003(02):22-24.
[2]林逸,施国标.汽车电动助力转向技术的发展现状与趋势[j].公路交通科技,2001(03):79-82 87.
