Title: A fuzzy logic controlled Anti-lock Braking System (ABS) for improved braking performance and directional stability

Authors: Yigit Yazicioglu, Y. Samim Unlusoy

Addresses: Mechanical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey. ' Mechanical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

Abstract: A simple and effective fuzzy logic controller is designed for an Anti-Lock Braking System (ABS) to improve the braking performance and directional stability of an automobile during braking, and steering-braking manoeuvres on uniform and nonuniform (µ-split) friction surfaces. The system consists of two controllers working in tandem. The first controller works on the longitudinal slip, and the second controller is responsible for the side-slip motion control of the vehicle. The fuzzy logic controller is implemented on a four-wheel nonlinear vehicle model with nonlinear tyre behaviour. Simulations are carried out and comparisons are made using the vehicle model with and without the fuzzy logic controlled ABS to assess controller performance.

Keywords: ABS; anti-lock braking systems; fuzzy control; nonlinear modelling; vehicle models; nonlinear tyre modelling; vehicle dynamic simulation; vehicle design; fuzzy logic; longitudinal slip; side-slip; motion control.

DOI: 10.1504/IJVD.2008.022581

International Journal of Vehicle Design, 2008 Vol.48 No.3/4, pp.299 - 315

Published online: 16 Jan 2009 *

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