Optimal Active Controller Design with Fractional Integral sliding sector for Vehicle Suspension System

In this paper, optimal integral sliding mode controller with fractional derivative for ¼ active suspension vehicle in order to achievement of safe control and passenger comfort in presence of uncertainty has been designed. Since, hydraulic actuator has nonlinear behavior, controller should be designed robustly. Therefore, sliding mode control as a robust controller is used. In the proposed method, sliding mode controller with fractional integral sliding surface is defined. In order to optimal design, fractional integral sliding surface parameters using particle swarm optimization (PSO) is optimized. Finally accuracy and performance of proposed method is validated by using active and passive method. Simulation results are shown performance of the proposed method in presence of road uncertainty.