Researches regarding the continuous improvement of the abs (anti-lock braking system) operation for the passenger cars

Abstract

This paper presents the validation for a simplified mathematical model of a passenger-car's ABS (Anti-Lock Braking System) for a "quarter-car" planar model was considered: A wheel in rotation movement and a mass in translational movement (the vehicle mass supported by that wheel), in accordance with the continuous improvement of the ABS (anti-lock braking system) operation for the passenger cars. The mathematical model consists in the motion equations of the wheel and "quarter-car" mass and in the equations describing the behaviour of the driver, controller, hydraulic module and brake. The model was transposed in a Matlab-Simulink model, offering the possibility to simulate many times how the ABS works if the constructive parameters, road conditions or driver inputs are changed. To validate a simplified model of a passenger car ABS (Anti-Lock Braking System) for a "quarter-car" planar model were conducted experimental researches in order to determine the braking performance of a vehicle on roads / runways with different adhesion coefficients.