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Author Xiaowei Zhao ♦ Limebeer, D.J.N. ♦ Graham, J.M.R.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Other branches of engineering
Subject Keyword Bridges ♦ Aerodynamics ♦ Wind speed ♦ Control systems ♦ Springs ♦ Optimization ♦ Structural panels
Abstract The dynamic stabilization of a sectional model of a long-span suspension bridge is considered. Feedback control is achieved using leading- and trailing-edge flaps as actuators. While a wide variety of control systems is possible, we focus on compensation schemes that can be implemented using passive mechanical components such as springs, dampers, and a rack and pinion mechanism. A single-loop control system is investigated that controls the flaps by sensing the main deck heave velocity. A symmetrical control scheme is used on both flaps to make the feedback system insensitive to the wind direction. The key finding is that the critical wind speed for the flutter instability of the sectional model of the bridge can be greatly increased, with good robustness characteristics, through passive feedback control.
Description Author affiliation: Department of Aeronautical Engineering, Imperial College London, SW7 2AZ, United Kingdom (Graham, J.M.R.) || Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, United Kingdom (Xiaowei Zhao; Limebeer, D.J.N.)
ISBN 9781612848006
ISSN 07431546
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-12-12
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781612848013
Size (in Bytes) 250.71 kB
Page Count 6
Starting Page 4195
Ending Page 4200

Source: IEEE Xplore Digital Library