全文总字数：11500字

1. 研究目的与意义（文献综述）

the purpose and significance of design

the electric power steering system is directly assisted by the electric booster, eliminating the power steering pump, hose and other necessary hydraulic power steering system devices, not only conducive to energy saving but also to protecting the environment. in addition, it has the characteristics of simple adjustment, flexible assembly and the ability to provide steering power in a variety of conditions. when the driver is operating the steering wheel for steering, the torque sensor detects the steering of the steering disk and the size of the torque, it then transports the voltage signal to the electronic control unit, and the electronic control unit issues instructions to the motor controller based on the torque voltage signal, rotation direction and speed signal detected by the torque sensor so that the motor output of the corresponding size and direction of the steering force torque, resulting in auxiliary power. when the car does not turn, the electronic control unit does not issue instructions to the motor controller, consequently the motor does not work. [1]

(1) foreign countries: in the 1980s, japan suzuki company for the first time developed an

2. 研究的基本内容与方案

basic content, objectives, technical solutions and

measures to be used in the study (design)

1. according to the structure parameters of the electric power steering system of a car, the scheme is determined and the structure is designed.

3. 研究计划与安排

Weekly (Time) Work Content Submission (End of Stage)1 (7th semester, 20th week) Determine the topic of graduation design (electronic power steering and test bench design), improve the task book of graduation design (related parameters), and collect data in school.2 (8th semester 1st week) Project conception, literature search, completion of opening report, literature search, opening report3-4 (8 semesters 2-3 weeks) Internship5 (8th semester 4th week) Foreign language translation (electronic power steering), data collection, foreign language translation6-8 (5th-7th week of 8th semester) Design calculation, (steering system) sketch drawing, design calculation draft, sketch9 (8th semester 7th week) Interim defense10-11 (8th-9th week of 8th semester) Drawing, writing papers (design and calculation instructions), drawing and preliminary draft of papers12-14 (8th semester 10th-12th week) Drawing and design calculation instructions, data bags, formal drawings and papers15 (8th semester 13th week) Students submit applications for defense and prepare for defense; Teachers review drawings, papers (instructions) graduation design kits16-17 (8 semesters 14-15 weeks) Participate in defense, recommend provincial excellent graduation design results, provincial excellent papers

4. 参考文献（12篇以上）

1. qian daoqing. shakisheng. mechanical design, manufacturing and automation. 2011

2. the development status and trend of lin yi, shi guobiao and automobile electric power steering system technology [j].highway transportation science and technology, 2001, 18(3):79.84.

3. li bing. wang lanhong. design of dual-source electric power steering system for electric bus. weifang vocational college. 2017.