Title: Application of the CRONE control-design method to a low-frequency active suspension system

Authors: X. Moreau, A. Rizzo, A. Oustaloup

Addresses: IMS – UMR 5218 CNRS, Universite Bordeaux 1, ENSEIRB, 351, cours de la Liberation – 33 405, Talence Cedex, France. ' IMS – UMR 5218 CNRS, Universite Bordeaux 1, ENSEIRB, 351, cours de la Liberation – 33 405, Talence Cedex, France. ' IMS – UMR 5218 CNRS, Universite Bordeaux 1, ENSEIRB, 351, cours de la Liberation – 33 405, Talence Cedex, France

Abstract: This paper presents a control law for a low-frequency active suspension system. The structure of the proposed control law is based on cooperation between feedforward and feedback. Feedforward design is based on the vehicle physics. The feedback law is synthesised from CRONE control-design method, French acronym of ||Commande Robuste d|Ordre Non Entier|| (non-integer order robust control). Modelling, robust control-design in frequency-domain, optimal approach, stability analysis and performance are presented in this paper.

Keywords: GCC; global chassis control; hydropneumatic suspension systems; fractional differentiation; robust control; CRONE control design; active suspension; control law; modelling; stability analysis; optimisation; low frequency; vehicle suspension.

DOI: 10.1504/IJVAS.2009.033260

International Journal of Vehicle Autonomous Systems, 2009 Vol.7 No.3/4, pp.172 - 200

Published online: 14 May 2010 *

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