Fuzzy self-tuning PID controller for Semi-active vehicle suspension system incorporating MR damper 2019-01-0455
This paper presents vibration control and performance of a nonlinear semi-active half vehicle suspension system model using MR fluid dampers. The control techniques are based on fuzzy self-tuning PID system controller and Signum function method dampers controller techniques respectively. The fuzzy self-tuning PID controller technique is purposed to compute the front and rear desired damping forces. Furthermore, comparison with the actual damping forces created on signum function method had been done to generate the actual voltage at front and rear axles. The achieved suspension performance certifies that the vehicle dynamic behavior is more stable and comfortable. The performance of the vehicle dynamic criteria such as the suspension working space, body acceleration and dynamic tire load for both front and rear axles are highly improved over passive and MR passive suspension systems. The simulation is represented in frequency domain and results are showed using Matlab/Simulink software to describe the overall vertical dynamics of a vehicle equipped with this MR damper controller under random road excitation.