In this work, the effects of component non-linearities on the ride performance of a hydro-pneumatic slow-active suspension system are studied theoretically. Based on the quarter car linear model, linear optimal control theory is used to calculate the feedback and feedforward gains. These gains are used in both linear and non-linear models with and without preview control. The Pade approximation technique is used to represent time resulting from a preview sensor mounted on the vehicle front bumper to measure the road irregularities ahead of the front wheel. The results on a typical major road showed that at similar r.m.s. values of suspension working space, the non-linear slow-active system with preview provided a 28 % improvement in ride comfort and a 17 % reduction in dynamic tyre load compared with a passive system. However, the inclusion of non-linear effects of the components increases the ride comfort acceleration by 10 % and suspension working space by 12 % compared to the equivalent linear model at approximately equal values of r.m.s. dynamic tyre load.


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    Title :

    Effect of non-linear components on the performance of a hydro-pneumatic slow-active suspension system


    Additional title:

    Effekt von nichtlinearen Bauteilen auf die Wirkung eines hydropneumatischen schwach-aktiven Federungssystems


    Contributors:


    Publication date :

    1996


    Size :

    12 Seiten, 10 Bilder, 2 Tabellen, 24 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






    Effect of non-linear components on the performance of a hydro-pneumatic slow-active suspension system

    El-Demerdash,S.M. / Crolla,D.A. / Univ.of Leeds,Dep.of Mech.Engng.,GB | Automotive engineering | 1996


    Hydro-pneumatic Slow-active Suspension with Preview Control

    El-Demerdash, S.M. | Online Contents | 1996


    Hydro-pneumatic slow-active suspension with preview control

    El-Demerdash,S.M. / Crolla,D.A. / Univ.of Leeds,Dep.of Mechanical Engineering,GB | Automotive engineering | 1996