Design of a Nonlinear Controller for Anti-Lock Braking System with Sliding Mode Methodology

In this paper, a control system is designed for performance enhancement of Anti-Lock Braking System (ABS) of automotives using sliding mode methodology. A quarter-car model is considered here and a non-linear controller is designed as the friction between road and tire is a nonlinear function to prevent the locking of the wheels during hard braking which may be a happens in the sliding state. Therefore, in this research, maximum deceleration can be achieved by designing a suitable control system for wheel slip regulation at its optimum value. A typical tire has been considered here for simulation to calculate the longitudinal slip, velocity, deceleration and force along with brake torque for three cases: different roads, initial velocity and noise presence. A sliding mode controller has been designed to provide wheel slip control during vehicle motion. The effect of controller is investigated during braking and also the results of all three mentioned cases compared to each other with designed controller

Keywords:

Anti-Lock Braking System , non-linear controller , sliding mode