Design of new variable steering ratio for mechanical active steering system

Author

Jie Wei ; Guobiao Shi ; Yi Lin

Author_Institution

Sch. of Mech. Eng., Beijing Inst. of Technol., Beijing, China

fYear

2013

fDate

28-30 July 2013

Firstpage

27

Lastpage

30

Abstract

For active steering vehicle, a proper steering ratio is important to the driver´s handling stability. This paper focuses on variable steering ratio. Based on the structure of double planet gear set, the relationship of steering wheel angle and motor angle is described, and the kinematic model of front wheel´s additional angle is established. In order to overcome the large steering workload in low speed and large lateral acceleration in high speed, a new variable steering ratio control law is proposed. The simulation results show the steering performance of vehicle is improved by using the designed variable steering ratio.

Keywords

acceleration; control system synthesis; design engineering; gears; mechanical stability; steering systems; vehicle dynamics; active steering vehicle; double planet gear set; driver handling stability; kinematic model; lateral acceleration; mechanical active steering system; motor angle; steering wheel angle; steering workload; variable steering ratio control law; vehicle steering performance; Acceleration; Gears; Kinematics; Stability analysis; Steering systems; Vehicles; Wheels; Active front steering; additional angle; steering performance; variable steering ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Electronics and Safety (ICVES), 2013 IEEE International Conference on

Conference_Location

Dongguan

Type

conf

DOI

10.1109/ICVES.2013.6619597

Filename

6619597