Title: Lateral stability control of vehicles based on the calculation and allocation of component forces

Authors: Guang Xia; Xiwen Tang; Yangying Hua; Wuwei Chen

Addresses: Institute of Automotive Engineering, Hefei University of Technology, Hefei, Anhui 230009, China ' School of Electronic Confrontation, National University of Defense Technology, Hefei, Anhui 230037, China ' Institute of Automotive Engineering, Hefei University of Technology, Hefei, Anhui 230009, China ' School of Automotive and Traffic Engineering, Hefei University of Technology, Hefei, Anhui 230009, China

Abstract: A vehicle lateral stability control method for real-time calculation and dynamic allocation of the longitudinal force and yaw moment of vehicle tyres is proposed. The achievable range of the longitudinal force and yaw moment of the tyre are calculated in real time through off-line numerical optimisation and nonlinear programming. The calculated values are then adjusted to within the available range and allocated dynamically. A controller for the slip rate and front wheel slip angle is used to ensure that the tyre friction can trace each component force. The proposed method avoids estimating the lateral force of vehicle rear wheels while ensuring accuracy. The results of simulations and driver-in-loop tests demonstrated that the proposed method can improve the track-holding ability while reducing the influence of a road surface with a low adhesion coefficient on vehicle stability. The method ensures high and dynamic tracking performance and lateral stability.

Keywords: longitudinal force component; yaw torque; calculation and allocation of component forces; lateral stability control.

DOI: 10.1504/IJVD.2018.100096

International Journal of Vehicle Design, 2018 Vol.78 No.1/2/3/4, pp.55 - 78

Accepted: 20 Feb 2019
Published online: 07 Jun 2019 *

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