Optimal disturbance rejection control design for Electric Power Steering systems

Author

Mehrabi, N. ; Azad, N.L. ; McPhee, J.

Author_Institution

Dept. of Syst. Design Eng., Univ. of Waterloo, Waterloo, ON, Canada

fYear

2011

fDate

12-15 Dec. 2011

Firstpage

6584

Lastpage

6589

Abstract

Nowadays many automobile manufacturers are switching to Electric Power Steering (EPS) for its advantages on performance and cost. In this paper, a mathematical model of a column type EPS system is established, and its state-space expression is constructed. Then three different control methods are implemented and performance, robustness and disturbance rejection properties of the EPS control systems are investigated. The controllers are tested via simulation and results show a modified Linear Quadratic Gaussian (LQG) controller can track the characteristic curve well and effectively attenuate external disturbances.

Keywords

automobiles; control system synthesis; electric vehicles; linear quadratic Gaussian control; state-space methods; steering systems; automobile manufacturers; column type EPS system; electric power steering systems; linear quadratic Gaussian controller; optimal disturbance rejection control design; state-space expression; Electric motors; Equations; Mathematical model; Torque; Vehicle dynamics; Vehicles; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on

Conference_Location

Orlando, FL

ISSN

0743-1546

Print_ISBN

978-1-61284-800-6

Electronic_ISBN

0743-1546

Type

conf

DOI

10.1109/CDC.2011.6161006

Filename

6161006