Optimal Preview Semiactive Suspension

[+] Author and Article Information
L. Jezequel

Laboratoire de Tribologie et de Dynamique des Systemes, URA CNRS 855, Ecole Centrale de Lyon, 69131 Ecully, Cedex, France

V. Roberti

Laboratoire de Geomateriaux, Ecole Nationale des Travaux Publics de L’Etat, 69518 Vaulx-en-Velin, Cedex, France

J. Dyn. Sys., Meas., Control 118(1), 99-105 (Mar 01, 1996) (7 pages) doi:10.1115/1.2801157 History: Received March 16, 1992; Online December 03, 2007


This paper examines an optimal preview semiactive suspension of a quarter-coach model moving along randomly profiled track. This optimal computer-controlled suspension is designed only to dissipate energy, and is able to use knowledge of track irregularities over a distance L in front of the train. Thus the deformation of the track can be taken into account when calculating the semi-active suspension control law. First, the expression of the optimal preview semiactive control law is established. Then, using a two-degrees-of-freedom quarter-coach model, preview information is shown to improve the behavior of an optimal non-preview semi-active system, which can come close to the performance of an active system.

Copyright © 1996 by The American Society of Mechanical Engineers
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