Title: Active vibration absorber for automotive suspensions: a theoretical study

Authors: Giulio Reina; Gilberto Delle Rose

Addresses: Dipartimento di Ingegneria dell'Innovazione, Università del Salento, Via Arnesano, 73100 Lecce, Italy ' Dipartimento di Ingegneria dell'Innovazione, Università del Salento, Via Arnesano, 73100 Lecce, Italy

Abstract: The paper deals with the attenuation of mechanical vibrations in automotive suspensions using active vibration absorbers. The main features and performance of an automotive suspension featuring an active vibration absorber are assessed adopting a two-degree-of-freedom quarter-car model. The active vibration absorber is designed following a linear quadratic regulation (LQR) control law. A comparison of the proposed system with a suspension that uses a purely passive vibration absorber and a state-of-the-art active suspension is presented. The results of the numeric simulations show that active vibration absorbers could be effective in improving suspension handling and comfort performance. They can be as well as a possible alternative to standard active suspensions in terms of lower power consumption, simplicity and cost.

Keywords: vehicle handling; ride comfort; active suspension; active vibration absorbers; vehicle dynamics; vertical dynamics; vehicle suspension; mechanical vibrations; quarter-car model; dynamic modelling; linear quadratic regulation; LQR control; vehicle vibration.

DOI: 10.1504/IJHVS.2016.074625

International Journal of Heavy Vehicle Systems, 2016 Vol.23 No.1, pp.21 - 39

Received: 25 Nov 2014
Accepted: 18 Sep 2015
Published online: 09 Feb 2016 *

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