Simulation on active vibration suppression using virtual spring-damper combination

Active suspension is an emerging technology used to improve the contact, comfort and control of vehicles and in other vibration suppression applications. Different methods are used to control the actuator force exerted between the sprung mass and unsprung mass in order to achieve the active suspension. Most of the other research areas have introduced LQR controllers, Fuzzy logic controller methodologies. But this paper presents a control method based on a virtual spring-damper combination. A linear motor model is expected to be used as the actuator in realizing the values of the virtual spring damper. The simulation results show the sprung mass displacement with and without the active suspension when subjected to a large disturbance. The success and the limitations of the proposed virtual spring-damper combination are discussed with the simulation results.