MODELING AND SIMULATION OF ANTI-LOCK BRAKE SYSTEM ON SUPER URBAN VEHICLE

Abstract

The anti-Lock brake system (ABS) is a safety tool for vehicles to monitor wheel lock-up and modulate brake pressure to provide controlled braking under most situations. The system is subjected to unknown uncertainties caused by changing the vehicle model dynamics and road conditions which requires to development of strong control system. This paper focuses on the development and simulation of the ABS model for the SUV (Super urban vehicle) in the MATLAB/Simulink with Fuzzy logic controller and CarSim software so optimum brake performance will be obtained and progressively increasing car accidents due to sudden braking will be reduced in the country. First, the mathematical modeling of the system has been developed depending on the vehicle speed, and the slip ratio between the tire and the road conditions. Then, the Fuzzy logic control algorithm was designed and subsequently simulated with a quarter vehicle dynamic model using MATLAB/Simulink software on different road conditions, including wet, and dry, and different speeds. Finally, the simulation carried out in CarSim software interlinked with the MATLAB/Simulink and the performance of the developed controller were compared and concluded that the braking distance and vehicle stability were improved under the simulation process