TY - GEN
T1 - Flutter control of long-span suspension bridges
AU - Zhao, Xiaowei
AU - Limebeer, David J.N.
AU - Graham, J. Michael R.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84860654759&partnerID=8YFLogxK
U2 - 10.1109/CDC.2011.6161513
DO - 10.1109/CDC.2011.6161513
M3 - Conference contribution
AN - SCOPUS:84860654759
SN - 9781612848006
T3 - Proceedings of the IEEE Conference on Decision and Control
SP - 4195
EP - 4200
BT - 2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011
Y2 - 12 December 2011 through 15 December 2011
ER -