Assessment of Semi-active Control Strategies for MR Dampers: Application to Building and Cable-Stayed Bridge Structures

• Main Authors: Chia-Ming Chang, 張家銘
• Other Authors: 羅俊雄
• Format: Others
• Language: en_US
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/78685088033044168343

碩士 === 國立臺灣大學 === 土木工程學研究所 === 92 === This paper presents the performance assessment of the semi-active control algorithms using MR dampers. In order to develop the semi-active control algorithm the unique features of the MR damper was generated which consider the intrinsic nonlinear behavior of the damper. The modified nonlinear hysteretic bi-viscous model with three slopes in force/velocity loop and two yield force values were proposed. Different control algorithms were selected including H2, H�V and mixed H2 and H�V control algorithms, sliding mode control in lieu of the LQG formulation, and the SMC with fussy logic control. The performance of the control algorithm is compared through numerical example study of a 3-story building and a benchmark problem of the cable-stayed bridge. Both far-field and near-field ground motion excitation are considered as excitation.