Model-based Fault Detection and Diagnosis of the Anti-lock Braking System

The ABS is one of the latest improvements to the braking system, which prevent the vehicle’s brakes from locking up and skidding during hard stops on icy or wet roads. ABS controllers are characterized by robust adaptive behaviour with respect to highly uncertain tyre characteristics and fast changing road surface properties. Performance improvement is typically sought in the areas of stability, steerability and stopping distance. In this paper, a non-linear mathematical model of the ABS is developed and ABS system is modelled using Simulink and some of the results are displayed which demonstrate the potential of the proposed model-based prognostics approach.