Studies on semi-active control strategies of vehiclesuspension system based on magnetorheological damper

Magnetorheological (MR) damper, which can provide controllable damping forces with very little energy consumption, is proposed to be used in semiactive control vehicle suspension system. Three different strategies are used to compare and verify the validness of semiactive control suspension system, and a strategy based on optimal control theory is proposed and recommended. Road excitation of B level is utilized in numerical simulation. Numerical results presented here demonstrate that the strategy based on optimal control theory is very effective. Furthermore, MR damper is a ideal semiactive control device with great potential.