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Smart Structures and Systems Volume 32, Number 5, November 2023 , pages 281-295 DOI: https://doi.org/10.12989/sss.2023.32.5.281 |
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Modeling and experimental verification of phase-control active tuned mass dampers applied to MDOF structures |
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Yong-An Lai, Pei-Tzu Chang and Yan-Liang Kuo
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| Abstract | ||
| The purpose of this study is to demonstrate and verify the application of phase-control absolute-acceleration-feedback active tuned mass dampers (PCA-ATMD) to multiple-degree-of-freedom (MDOF) building structures. In addition, servo speed control technique has been developed as a replacement for force control in order to mitigate the negative effects caused by friction and inertia. The essence of the proposed PCA-ATMD is to achieve a 90° phase lag for a structure by implementing the desired control force so that the PCA-ATMD can receive the maximum power flow with which to effectively mitigate the structural vibration. An MDOF building structure with a PCA-ATMD and a real-time filter forming a complete system is modeled using a state-space representation and is presented in detail. The feedback measurement for the phase control algorithm of the MDOF structure is compact, with only the absolute acceleration of one structural floor and ATMD | ||
| Key Words | ||
| active tuned mass damper; discrete-time direct output feedback; multi-degree-of-freedom building structure; phase control; seismic excitation; servo-velocity control; shaking table experiment | ||
| Address | ||
| Department of Civil Engineering, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City 320317, Taiwan (R.O.C.). | ||