1. 研究目的与意义（文献综述）
1.1目的及意义
theautomobile industry is developing rapidly, and the number of cars is increasingyear by year. while the popularity of cars has brought convenience to humanbeings, it has also caused severe problems such as environmental pollution andenergy loss: at the same time, road traffic accidents are also increasing. great loss of spirit. in the driving environment constituted by"people-vehicle roads", people are the dominant component. driverfatigue, distraction, and misjudgment caused by insufficient driving experienceare the main causes of traffic accidents. therefore, if "people" arenegative the removal of these factorswill be of great significance to improve the active safety of the drivingprocess. combining the above twoaspects, the development of intelligent electric vehicles will effectivelyavoid many problems caused by automobiles, and make the development of vehiclestruly benefit humanity. autonomoussteering is an important factor in realizing vehicle intelligence. therefore,based on the steering system of the unmanned intelligent chassis design andresearch—steering system, the automatic steering system and control strategy ofelectric vehicles will be studied.
the research of automatic steering system ismainly divided into two aspects: automatic steering execution device andautomatic steering control system. the automaticsteering execution device is based on the original steering system. thesteering system is driven by a motor and the like. it can replace the driverand is the basis for automatic steering.the automatic steering control system, that is, the lateral controlsystem, is used to comprehensively judge the external environment informationand the vehicle's own information, and give the current vehicle behaviorinstructions. during the running of thevehicle, in order to ensure the stability of the steering and avoid vehiclesideslip and even rollover due to excessive vehicle speed during steering, thelongitudinal movement needs to be controlled to assist the steering control.the automatic longitudinal control system canthe road environment is controlled by the cooperation of the acceleratorand the brake to control the longitudinal speed of the vehicle on differentcurved roads.
2. 研究的基本内容与方案
2.1设计的基本内容
the basic content ofthis graduation design is to design a steering system for electric vehiclesthat can be applied to driverless cars.the traditional steering method relies on the steering column to connectthe steering mechanism to achieve steering, which is converted into a steeringsystem that detects the steering wheel angle signal through a sensor andcontrols the servo motor through a computer to control the steering.
2.2设计目标
3. 研究计划与安排
| （2020.02.01-02.29） | By carefully reviewing Bi She's relevant literature andinformation, she has in-depth understanding of the 7-degree-of-freedom modeland formula prototype and basis of autonomous vehicles. |
| （02.19-03.5） | Complete the core foreign language translation that isclosely related to this Bishe. |
| （02.01-02.29） | Submit a literature search abstract and write an openingreport. |
| （3.1-3.15） | Master the use of matlab skills, calculation of vehicleturn positioning parameters. |
| （3.15-3.30） | In-depth study of PID algorithm, MPC method. |
| （4.1-4.15） | Write a function and prepare a mid-term reply. |
| （4.16-5.1） | Design "redundant" automatic steering systems. |
| （5.1-5.10） | The whole system of calculus design feeds back thesituation and accuracy under different inputs and performs simulation. |
| （5.11-5.30） | Completion of the drawings, instructions, and thesisrequired for graduation design, and refer to the instructor for revision. |
| （6.1-6.8） | Prepare a graduation design reply. |
4. 参考文献（12篇以上）
[1]bi-cheng luan and yeh lin (2018) design an automaticsteering controller with a camera-based system for lateral assistance controlin car driving. sae technical paper 2018-01-0760, 2018
[2]byung yong you , gyeonggi - do ( kr ) ; myung seon heo ,seoul ( kr ) ; young chul oh , gyeonggi - do ( kr) (2018) apparatus and methodfor automatic steering control in vehicle. patent no.: us 10,160,485 b2
[3]tetsuharu hamada ，shunsuke nakajima ， rei yoshino ， (2020) automaticsteering control apparatus and steering control method. patent no.: us 10,549,776 b2
