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Smart Structures and Systems Volume 13, Number 2, February 2014 , pages 281-303 DOI: https://doi.org/10.12989/sss.2014.13.2.281 |
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Active mass driver control system for suppressing wind-induced vibration of the Canton Tower |
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Huai-bing Xu, Chun-wei Zhang, Hui Li, Ping Tan, Jin-ping Ou and Fu-lin Zhou
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| Abstract | ||
| In order to suppress the wind-induced vibrations of the Canton Tower, a pair of active mass river (AMD) systems has been installed on the top of the main structure. The structural principal directions n which the bending modes of the structure are uncoupled are proposed and verified based on the rthogonal projection approach. For the vibration control design in the principal X direction, the simplified odel of the structure is developed based on the finite element model and modified according to the field measurements under wind excitations. The AMD system driven by permanent magnet synchronous linear otors are adopted. The dynamical models of the AMD subsystems are determined according to the pen-loop test results by using nonlinear least square fitting method. The continuous variable gain feedback VGF) control strategy is adopted to make the AMD system adaptive to the variation in the intensity of wind excitations. Finally, the field tests of free vibration control are carried out. The field test results of AMD control show that the damping ratio of the first vibration mode increases up to 11 times of the original value without control. | ||
| Key Words | ||
| structural vibration control; variable gain feedback control; wind-induced vibration; active ass driver; linear motor | ||
| Address | ||
| Huai-bing Xu, Chun-wei Zhang, Hui Li and Jin-ping Ou : School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China Ping Tan and Fu-lin Zhou : The State Key Laboratory of Seismic Reduction/Control & Structural Safety (Cultivation), Guangzhou University, Guangzhou 510405, China | ||