Fuzzy Logic Control of Electric Vehicles in Changing Braking Conditions

The paper focuses on the issues actual for braking manoeuvres of road electric vehicles. Multiple researches carried out on car braking are classified here on their attitude towards the energy recycling. The designed MATLAB/Simulink™ model concentrates on the gradient fuzzy logic control of braking torque under the tire-road friction uncertainty. The performance variables evaluated are regenerative energy, vehicle and wheel velocities, longitudinal wheel slip, and application torque experienced by the car and distributed between electrical and friction brakes. At this, integrity of both the gradual and the urgent antilock braking processes is ensured based on a united approach with the agreed actions. The solutions found by simulations were compared to the experimental plots obtained from a hardware-in-the-loop test rig. Thereby, the robustness of the system to changes in the tire-road interaction was confirmed.