Decoupling Control of Electric Power Steering System with Variable Gear Transmission System

Author

Morita, Yoshifumi ; Torii, Kentaro ; Tsuchida, Norio ; Ukai, Hiroyuki ; Iwasaki, Makoto ; Matsui, Nobuyuki ; Hayashi, Jiro ; Ido, Noriyuki ; Ishikawa, Hiroshi

Author_Institution

Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol.

fYear

2006

fDate

6-10 Nov. 2006

Firstpage

5264

Lastpage

5269

Abstract

In this paper a new control method of electric power steering (EPS) system with variable gear transfer system (VGTS) is proposed. The basic idea of controller design is to apply decoupling control to this system and to separately design controllers for two decoupled systems. The decoupled systems are torque control system and gear ratio control system. In angle control system the PID control is used for the desired gear ratio. In torque control system the PID control is used for the desired assist torque designed so as to achieve good steering feel. In order to evaluate steering feel the Lissajous curve between the steering torque and steering angle is used. The steering feel of the proposed controller is verified by numerical simulation tests

Keywords

control system synthesis; gears; numerical analysis; power transmission (mechanical); steering systems; three-term control; torque control; Lissajous curve; angle control system; controller design; decoupling control; electric power steering system; gear ratio control system; numerical simulation; torque control system; variable gear transmission system; Control systems; Electric variables control; Equations; Gears; Numerical simulation; Steering systems; Testing; Three-term control; Torque control; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on

Conference_Location

Paris

ISSN

1553-572X

Print_ISBN

1-4244-0390-1

Type

conf

DOI

10.1109/IECON.2006.347664

Filename

4153408