Research of Efficiency of Anti-lock Braking System During Emergency Cornering Manoeuver

Abstract

In this paper, the efficiency of the anti-lock braking system (ABS) during an emergency braking in a turn was examined. Analysis of the paper reviews various modules and algorithms which are used in modern ABS systems, also relevant vehicle’s dynamic properties and mathematical models. Experiments of vehicle braking in a turn were performed under different road conditions and two generations of ABS systems. Additional analysis was made on behalf of the influence of driver behaviour in situations of emergency braking with cornering. It was found that the force applied to the braking pedal and its moment (according to moment of steering) affects the manoeuvring of the vehicle when ABS is engaged or disengaged. Vehicle’s lateral acceleration is up to 40% higher with ABS active because driver do not have to precisely dose the braking force (part of ABS), therefore he is more involved in course change; however, from vehicle dynamics point of view the sequence of braking and steering actions is still important for safe obstacle avoidance during emergency braking.