Vehicle vibration originates from road roughness. The main objective of the active vibration control of vehicle suspension systems is to get security and comfort for the passengers by reducing to zero the vertical acceleration of the body of the vehicle. An actuator incorporated to the suspension system applies control forces to the vehicle body for reducing its vertical acceleration in active or semiactive way. The topic of active vehicle suspension control system is quite challenging. The aim of this project is to design a robust control scheme to control vibration of vehicles suspension system.
Design a robust control System for Vibration Control of Vehicles
The work is done in two phases (two semsters).
A robust strategy is studied for controlling the active suspension system using a quarter-car model. A proportional-integral sliding mode control scheme (PISMC) is used for this purpose. The performance of the controller is compared to the linear quadratic regulator(LQR) and with the existing uncompensated system. A simulation study is performed to prove the effectiveness and robustness of the control approach. Quadratic Performance Index (J) for different inputs and different controlling techniques is also calculated.
A robust strategy is studied for controlling the active suspension system using a Full 7-DOF car model. The proposed control scheme uses a PID-SMC to generate the tracking signal for four wheel subsystems of actuators for mitigating the road disturbances. The performance of the controller is compared to the nominal open loop model uncompensated system. Along with vertical disturbance, we also introduced the turning road disturbance in order to check the roll angle.
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