1. 研究目的与意义（文献综述）

1.1 purpose and significance:

the automobile suspension is one of themost important assemblies on the modern vehicles. it connects the body and thewheel flexibly. its main task is to transfer all forces and moments actingbetween the wheel and the body; to mitigate the impact load transmitted to thebody by the road surface and to attenuate the vibration of the bearing systemcaused thereby, to ensure the smooth running of the car; to ensure that thewheel is uneven on the road surface and when the load changes, it has idealsports characteristics to ensure the stability of the car, so that the car canget high-speed driving ability.

at present, customers have higherrequirements on the safety and comfort of vehicles. traditional passivesuspension structures can hardly satisfy those requirements for ride performance.since the 1990s, the design of semi-active suspension and active suspension hasgradually emerged. the semi-active suspension and active suspension not onlyovercome the problems of balancing stability and ride performance intraditional passive suspension, but also adapt to various driving conditionsand arbitrary road excitations, becoming an important trend in the futuredevelopment of vehicle suspension. but during the coming period, threedifferent types of suspensions, including passive suspensions, will coexist.

2. 研究的基本内容与方案

2.1the basic content of the design

（1）.comparativeanalysis of the characteristics of various types of suspension for popularcars;

the front suspension of the car mainly usesmacpherson suspension and double wishbone suspension. the rear suspension mainlyuses multi-links, double wishbone, and torsion beams. those different types ofsuspensions have different kinematic characteristics, should be chosen byconsidering the design purpose.

3. 研究计划与安排

semester7,19th to 20th week： to determine the graduation design topics,graduation design task book (related parameters), school data collection.

semester8,1st week： organizeideas, search reference, complete the opening report.

semester8,2nd to 3rd week： off-campusinternship, off-campus data collection, completion of internship report.

4. 参考文献（12篇以上）

[1]王望予. 汽车设计.第4版[m]. 机械工业出版社, 2011.

[2]杨凯. 乘用车独立悬架侧倾中心设定方法[a]. 中国汽车工程学会.第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集[c].中国汽车工程学会:,2017:4.

[3]梁媛媛, 龙道江. 麦弗逊悬架的设计及其优化[j]. 汽车实用技术, 2016(12):54-57.