This paper presents the application of the ADAMS (Automatic Dynamic Analysis of Mechanical Systems) computer programmes to simulate the performance of an anti-lock braking system (ABS) with two different tyres to compare the safety levels. A study has been conducted based on a single wheel model and dynamic simulations have been carried out which combine a braking algorithm representing the ABS. The braking models described here incorporate (FIALA) tyre model based on tyre tests carried out with the help of SP Tyres (UK) Ltd and Lucas Automotive Plc.

These tests were conducted to explore the relationship between tyre braking force and wheel slip. Whilst braking torque is applied to the wheel, slip increases until the wheel is locked and slipping occurs. The simulation results portrayed in this paper demonstrate how a simple ABS algorithm can be transformed into a vehicle-braking model to prevent wheel locking, during a severe braking. One of the main objectives of this study is to investigate the complicated interaction between the tyre and the ABS system. So designers can use this model to decide which tyres are more suitable with an ABS system. This is demonstrated by comparing the ABS algorithm with models using data for two different tyres and also investigating the influence of changing road conditions from dry to wet.

The paper draws the conclusion by a discussion of the application of ADAMS simulation for vehicle safety issue.

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