Title: Active suspension control of vehicle with uncertainties using robust controllers

Authors: Md. Kaleemullah; Waleed F. Faris

Addresses: Department of Mechatronics Engineering, Faculty of Engineering, International Islamic University Malaysia, Jalan Gombak, Kuala Lumpur, 53100, Malaysia ' Department of Mechatronics Engineering, Faculty of Engineering, International Islamic University Malaysia, Jalan Gombak, Kuala Lumpur, 53100, Malaysia

Abstract: Better ride comfort and controllability of vehicles are pursued by automotive industries by considering the use of suspension system which plays a very important role in handling and ride comfort characteristics. This paper presents the design of an active suspension of quarter car system using robust H-infinity, robust H₂, robust Mu-synthesis controllers with passive suspension technique. Parametric uncertainties were also considered to model the nonlinearities associated in the system. Numerical simulation was performed to the designed controller. Results show that in spite of introducing uncertainties, the designed active controller improves ride comfort and road holding of the car when compared to the traditional passive suspension system.

Keywords: active suspension control; vehicle suspension; quarter car models; robust control; H-infinity control; robust H2 control; Mu-synthesis control; parametric uncertainties; ride comfort; modelling; numerical simulation; controller design; road holding.

DOI: 10.1504/IJVSMT.2014.066512

International Journal of Vehicle Systems Modelling and Testing, 2014 Vol.9 No.3/4, pp.293 - 310

Published online: 30 Dec 2014 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article