Vibration control assessment of ASCE benchmark model of cable-stayed bridge
Journal
Structural Control and Health Monitoring
Journal Volume
13
Journal Issue
4
Pages
825-848
Date Issued
2006
Author(s)
Abstract
This paper presents the performance assessment of the semi-active control on the ASCE benchmark model of a cable-stayed bridge using MR dampers. In order to develop the semi-active control algorithm unique features of the MR damper were generated which considered the intrinsic nonlinear behavior of the damper. The modified nonlinear hysteretic bi-viscous model with three slopes in the force/velocity loop and two yield force values were proposed. Different control algorithms were selected including H2, H∞ and mix H2 and H∞ control algorithms, sliding mode control in lieu of the LQG formulation, and the SMC with fuzzy logic control. The performance of the control algorithm is compared through a numerical study of the ASCE benchmark model of a cable-stayed bridge. Finally, the control performance among different control algorithm is examined. Through numerical study it is concluded that the mixed H2 and H∞ semi-active control method is the better control method because it has a good ability to mitigate every evaluated response, and has a robust control gain to generate the appropriate control force. But the passive control system (passive-on for MR-damper) for this benchmark problem also provides good control effectiveness. Copyright © 2005 John Wiley & Sons, Ltd.
Type
journal article