Title: A comparative ride performance of passive, semi-active and active suspension systems for off-road vehicles using half car model

Authors: L. Zohir Ben; Faried Hasbullah; F. Waleed Faris

Addresses: Mechanical Engineering Department, College of Engineering, International Islamic University (IIUM), 53100 Kuala Lumpur, Kuala Lumpur, Malaysia ' Mechanical Engineering Department, College of Engineering, International Islamic University (IIUM), 53100 Kuala Lumpur, Malaysia ' Mechanical Engineering Department, College of Engineering, International Islamic University (IIUM), 53100 Kuala Lumpur, Kuala Lumpur, Malaysia

Abstract: The work aims to study the performance of suspension systems for off-road vehicles. Three type of suspensions -passive, hybrid semi-active and Linear Quadratic Regulator (LQR) active suspension systems - are presented using half-car model. These systems are compared in terms of ride quality, handling, road holding and ability to support vehicle static weight through transient and statistical analyses. Results indicate the responses of the proposed LQR active system to random road excitation relative to the passive system are better than the hybrid semi-active system in terms of the criteria mentioned above.

Keywords: passive suspension; off-road vehicles; linear quadratic regulator; LQR active suspension; semi-active suspension; ride comfort; ride performance; half car models; vehicle modelling; vehicle suspension; ride quality; vehicle handling; road holding; vehicle static weight support.

DOI: 10.1504/IJHVS.2014.057827

International Journal of Heavy Vehicle Systems, 2014 Vol.21 No.1, pp.26 - 41

Available online: 14 Oct 2013 *

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