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Proceedings Paper

On the development of fuzzy skyhook control for semiactive magneto-rheological systems
Author(s): Mehdi Ahmadian
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Paper Abstract

Since the development of the vehicle suspension system, designers have been faced with the conflict of vehicle safety versus ride comfort. Originally, this trade-off was minimized by optimally adjusting a passive damper. In the recent years, the development of computer-controlled suspension dampers and actuators has improved the trade-off between the vehicle handling and ride comfort, and has led to the development of various damper control policies. In this study, the vehicle handling and ride comfort trade-off is studied for a vehicle suspensions with semiactive fuzzy control. The proposed semiactive fuzzy control is based on the control policies that are commonly known as "skyhook" and "groundhook". After describing the mathematical details of the proposed semiactive fuzzy control, it is applied to a roll-plane model of a heavy truck in order to compare its performance with conventional passive suspensions. The results of the study show that semiactive suspensions with fuzzy logic control could improve rollover characteristics during vehicle maneuvers. The results, however, show that for road inputs at the tire, the semiactive suspensions can cause larger body acceleration peaks and a harsher ride.

Paper Details

Date Published: 16 May 2005
PDF: 15 pages
Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); doi: 10.1117/12.600489
Show Author Affiliations
Mehdi Ahmadian, Virginia Polytechnic Institute and State Univ. (United States)

Published in SPIE Proceedings Vol. 5760:
Smart Structures and Materials 2005: Damping and Isolation
Kon-Well Wang, Editor(s)

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