Title: Fuzzy logic approach to four-wheel steering of motor vehicle

Authors: A. Szosland

Addresses: Vehicle Research Institute, Technical University of Lodz, ul. Zeromskiego 116,90-924 Lodz, Poland

Abstract: The paper presents the results of numerical simulation of two concepts of the steering system - a passive (2WS) and a four wheel steering one (4WS). A process of modelling of a vehicle behaviour going along the curvilinear path is described. A full, four wheel car model is used, which performances in time domain are shown. Non-linear relations of the friction forces are taken into consideration. A model of a driver enables two principles of motion: a lane change and a steady state cornering. The realisation of the 4WS control is proposed by means of a fuzzy logic controller. The purpose of this control is to minimise the side-slip angle at the centre of gravity, which finally improves the stability of a vehicle. The results of numerical calculation of a curvilinear motion of a vehicle with 2WS and 4WS steering systems are presented.

Keywords: four wheel steering; fuzzy logic; fuzzy control; motor vehicle; passive steering; simulation; vehicle behaviour; vehicle modelling; vehicle stability.

DOI: 10.1504/IJVD.2000.005197

International Journal of Vehicle Design, 2000 Vol.24 No.4, pp.350 - 359

Published online: 10 Sep 2004 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article