Assessment of different semi-active control strategies on the performance of off-road vehicle suspension systems

Faris, Waleed Fekry and BenLahcene, Zohir and Ihsan, Sany Izan (2010) Assessment of different semi-active control strategies on the performance of off-road vehicle suspension systems. International Journal of Vehicle Systems Modelling and Testing , 5 (2-3). pp. 254-271. ISSN 1745-6444

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Abstract

This paper deals with dynamics and control policies analysis of semi-active suspension systems for off-road vehicles. Three configurations of these vehicles; two-axle, three-axle and four-axle have been studied and their performances are compared. The application of several control policies of semi-active suspension system, namely skyhook; ground-hook and hybrid controls have been analysed and compared with passive systems. The results show that the hybrid control policy yields better comfort than a passive suspension, without reducing the road-holding quality or increasing the suspension displacement. The hybrid control policy is also shown to be a better compromise between comfort, road-holding and suspension displacement than the skyhook and ground-hook control policies. Skyhook control generally improves sprung mass responses while at the same time increasing unsprung mass responses. On the other hand, ground-hook control generally improves unsprung mass responses at the expense of the sprung mass responses. Results show an improvement in ride comfort and vehicle handling using four-axle over three-axle and two-axle when emphasis is placed on the response of the vehicle body acceleration, suspension and tyre deflection.

Item Type:	Article (Journal)
Additional Information:	4694/4300
Uncontrolled Keywords:	ride comfort; half-vehicle model; semi-active system; skyhook; ground-hook; hybrid; passive suspension system.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ170 Mechanics applied to machinery. Dynamics T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof.Dr. Waleed Fekry Faris
Date Deposited:	06 May 2012 14:58
Last Modified:	06 May 2012 15:09
URI:	http://irep.iium.edu.my/id/eprint/4300

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