The influence of four-wheel steering system on vehicle behavior

Original Scientific Paper distributed under the CC BY 4.0

Year 2022, Volume 1, Issue 2, Pages 42-46

Dusan Opsenica

University of Belgrade, Faculty of Mechanical Engineering

Ivan Blagojevic

University of Belgrade, Faculty of Mechanical Engineering

This paper presents influence of four-wheel steering system on lateral vehicle acceleration, yaw rate, lateral slip, and also constant radius cornering. The influence is perceived using MSC Adams/Car software package, with Ferrari Testarossa (MSC Adams/Car – Demo Vehicle) used for simulations. In all simulations rear wheels are steered in the same direction as front wheels. Simulations were created based on double lane change maneuver. At the end, a comparison of mentioned parameters is shown, in case when vehicle is equipped with this system, and when it is not. The comparison showed that, depending on the speed of the vehicle and the value of the steering angle of the wheels, the system has a significant impact on the vehicle stability. In simulations where vehicle was moving at lower speeds and there was no disturbance of vehicle stability, this system has decreased compared parameters. Based on this comparison, it was possible to determine the optimal values of the steering angles of the wheels, to make the rate of decrease as high as possible. 

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