Citation

Sandu C, Andersen ER, Southward S. Veh. Syst. Dyn. 2011; 49(1-2): 153-179.

Copyright

(Copyright © 2011, Informa - Taylor and Francis Group)

DOI

10.1080/00423110903406664

PMID

unavailable

Abstract

In this paper, we develop a multibody dynamics model of a quarter-car test-rig equipped with a McPherson strut suspension and we apply a system identification technique on it. Constrained equations of motion in the Lagrange multiplier form are derived and employed to characterise the dynamic behaviour of the test rig modelled once as a linear system and once as a non-linear system. The system of differential algebraic equations is integrated using a Hilber-Hughes-Taylor integrator. The responses of both models (linear and non-linear) to a given displacement input are obtained and compared with the experimental response recorded using the physical quarter-car test rig equipped with a McPherson strut suspension. The system identification is performed for control purposes. The results, as well as the performance and area of applicability of the test rig models derived, are discussed.