Title :
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
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;
Conference_Titel :
Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-61284-800-6
Electronic_ISBN :
0743-1546
DOI :
10.1109/CDC.2011.6161006
