Title :
Analysis of electric power steering control based on S/T method
Author :
Wang, Hao ; Xu, Zhenlin ; Li, Zhijie ; Shang, Zhe ; Zhang, Haihua
Author_Institution :
Dept. of Electr. Eng. & Autom., Tianjin Univ., China
Abstract :
Aimed at the nonlinear MIMO system of electric power steering system, the nonlinear dynamic model of this system was established. Considering of the model error, H-∞ robust controller was obtained based on S/T method. Using mixed weighted sensitivity method, sensitivity function and complementary sensitivity function were designed. The simulation results show that the designed controller is proper. The closed loop system has better robust stability and can reject sensor noise and road perturbation effectively.
Keywords :
H∞ control; MIMO systems; closed loop systems; control system analysis; control system synthesis; nonlinear control systems; nonlinear dynamical systems; position control; road vehicles; robust control; sensitivity analysis; steering systems; H∞ robust controller; S/T method; closed loop system; complementary sensitivity function; electric power steering system control; mixed weighted sensitivity method; nonlinear MIMO system; nonlinear dynamic model; road perturbation; robust stability; sensor noise rejection; Closed loop systems; Error correction; MIMO; Noise robustness; Nonlinear dynamical systems; Power system modeling; Robust control; Robust stability; Sensor systems; Steering systems;
Conference_Titel :
Intelligent Control and Automation, 2004. WCICA 2004. Fifth World Congress on
Print_ISBN :
0-7803-8273-0
DOI :
10.1109/WCICA.2004.1340642
