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Proceedings Paper

Variable structure system based logic fuzzy control of bridge vibration using fail-safe magnetorheological fluid dampers
Author(s): Yanming Liu; Faramarz Gordaninejad; Cahit A. Evrensel; Gregory H. Hitchcock; Xiaojie Wang
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Paper Abstract

This paper presents a semi-active vibration control of a scaled two-span bridge structure. Magneto-rheological fluid dampers are utilized as the semi-active energy absorbing deices and a bridge vibration control system is developed. Closed-loop control system based on fuzzy logic is used to suppress the bridge deck motion under random excitations. The sufficient condition for the closed-loop stability of the fuzzy control system is derived from the variable structure system theory. It is demonstrated that this stable fuzzy control system can significantly reduce the relative deck displacement using about 55 percent less power compared to passive-on state, while the absolute deck acceleration is relatively unaffected.

Paper Details

Date Published: 28 June 2002
PDF: 9 pages
Proc. SPIE 4696, Smart Structures and Materials 2002: Smart Systems for Bridges, Structures, and Highways, (28 June 2002); doi: 10.1117/12.472557
Show Author Affiliations
Yanming Liu, Univ. of Nevada/Reno (United States)
Faramarz Gordaninejad, Univ. of Nevada/Reno (United States)
Cahit A. Evrensel, Univ. of Nevada/Reno (United States)
Gregory H. Hitchcock, Univ. of Nevada/Reno (United States)
Xiaojie Wang, Univ. of Nevada/Reno (United States)


Published in SPIE Proceedings Vol. 4696:
Smart Structures and Materials 2002: Smart Systems for Bridges, Structures, and Highways
S.-C. Liu; Darryll J. Pines, Editor(s)

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