Title: Design of Active Front Steering (AFS) system with QFT control

Authors: Jingyi Zhang; Jinwan Kim; Dongji Xuan; Youngbae Kim

Addresses: Department of Mechanical Engineering, Chonnam National University, Gwangju 500757, South Korea; R&D Department, Changanvisteon Co., Chongqing 401122, China. ' Department of Mechanical Engineering, Chonnam National University, Gwangju 500757, South Korea. ' Department of Mechanical Engineering, Chonnam National University, Gwangju 500757, South Korea; College of Mechanical Engineering, Wenzhou University, Wenzhou 325045, China. ' Department of Mechanical Engineering, Chonnam National University, Gwangju 500757, South Korea

Abstract: This paper investigates a control strategy of active front wheel steering based on quantitative feedback theory (QFT). By incorporating feedback from yaw rate sensor into active steering system, the control system improves the dynamic responses of the vehicle. A multi degree-of-freedom nonlinear vehicle model is co-simulated with MATLAB Simulink and ADAMS/CAR. The performance of the control system is evaluated under various emergency manoeuvres and road conditions. The results show that the designed robust control algorithm has good control performance and can efficiently improve the handing qualities and stability characteristics.

Keywords: AFS; active front steering; QFT control; quantitative feedback theory; yaw rate sensors; vehicle design; vehicle control; nonlinear modelling; simulation; emergency manoeuvres; road conditions; robust control; vehicle handing; vehicle stability.

DOI: 10.1504/IJCAT.2011.042698

International Journal of Computer Applications in Technology, 2011 Vol.41 No.3/4, pp.236 - 245

Available online: 25 Sep 2011 *

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