Title :
EPS control based on state feedback
Author :
Wenchang, Lu ; Hongqi, Ma
Author_Institution :
Sch. of Automobile & Traffic Eng., Jiangsu Univ., Zhenjiang, China
Abstract :
A simplified model of the steering system incorporating vehicle dynamics is analyzed based on the structure of the Electric power steering (EPS) system, and a linear quadratic regulator controller is proposed by taking the steering wheel angle, yaw rate and the sideslip angle as the optimization object. Additionally, a state-space observer is designed to estimate the sideslip angle which is difficult to measure directly. Finally the simulation and experiment of vehicle snaking test shows that the control can improve the steering characteristics and handing stability effectively.
Keywords :
automobiles; automotive components; linear quadratic control; observers; state feedback; steering systems; vehicle dynamics; EPS control; electric power steering; linear quadratic regulator controller; sideslip angle; state feedback; state-space observer; steering system; steering wheel angle; vehicle dynamics; vehicle snaking test; yaw rate; Analytical models; Mathematical model; Power systems; Stability analysis; Steering systems; Vehicles; Wheels; Electric power steering system; handing stability; linear quadratic regulator (LQR); state-space observer;
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
DOI :
10.1109/ICEICE.2011.5777065
