Robust control of linear active suspensions

Control of an active suspension system with uncertain parameters is studied. A simple heave two-degree-of-freedom vehicle model is considered. A state variable feedback and an integral plus state variable feedback controllers are designed for the nominal system. A memoryless nonlinear feedback controller is superimposed on the nominal controllers to compensate for the uncertainties. The design of the robust controller does not require any a priori statistics for the uncertain parameters, only bounding sets are taken as given. Simulation studies show that the proposed controller results in better attitude control without sacrificing the ride comfort.King Saud Universit