MR Damper Semiactive Control for Bridge under Multi-Support Seismic Excitation
For vibration control of long-span arch bridges under multi-support seismic excitation, this paper presents schemes of control to seismic responses of arch bridges with Magneto-Rheological dampers(MRD). In the semi-active control system of arch bridge-MRD, Linear Quadratic Gaussian (LQG)-based Sign function control algorithm is used to command MRD，and traveling wave effects on the responses of structure are considered. The Nimu arch bridge is used as a simulation example to verify the proposed control scheme. Numerical results show that traveling wave effects have no unfavorable influence on the control to response of arch bridge.
Z. Y. Li et al., "MR Damper Semiactive Control for Bridge under Multi-Support Seismic Excitation", Applied Mechanics and Materials, Vols. 90-93, pp. 1402-1405, 2011