Controllers for semi-active suspensions have to account for constraints on damper range, tire force and suspension travel. Two approaches to incorporate these constraints in the design of controllers to minimize peak values in the chassis acceleration are considered. It is assumed that information on the oncoming road elevations (preview) is available. In the soft constraint approach, the constraints on tire force and suspension travel are included in a quadratic performance index. Two clipped optimal control laws, which deal with preview in a different way, are presented. Simulation results with a 2-DOF vehicle model on some rounded pulses show that these laws do not work satisfactorily with respect to the constraints. Therefore, the control problem is reformulated as a constrained optimization problem with hard constraints on tire force and suspension travel. Simulations with the same model on the same rounded pulses show that the hard constraint approach handles the constraints more properly.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Constrained Optimal Control of Semi-Active Suspension Systems with Preview


    Contributors:

    Published in:

    Vehicle System Dynamics ; 28 , 4-5 ; 307-323


    Publication date :

    1997-10-01


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Constrained optimal control of semi-active suspension systems with preview

    Aa, M.A.H. van der / Muijderman, J.H.E.A. / Veldpaus, F.E. | Tema Archive | 1997


    Contrained optimal control of semi-active suspension systems with preview

    van der Aa,M.A. / Muijderman,J.H. / Veldpaus,F.E. et al. | Automotive engineering | 1997


    Optimal preview control of active and semi-active suspension systems including jerk

    Youn,I. / Gyeoungsag National Univ.,KR | Automotive engineering | 1996