期刊
MECHATRONICS
卷 20, 期 1, 页码 128-142出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechatronics.2009.11.001
关键词
Building vibration control; Finite frequency; H-infinity control
类别
资金
- National Science Fund for Distinguished Young Scholars of China [60825303]
- Heilongjiang Outstanding Youth Science Fund [JC200809]
- Foundation for the Author of National Excellent Doctoral Dissertation of China [2007B4]
- 973 Project [2009CB320600]
This paper deals with the problem of H-infinity control for seismic-excited buildings in finite frequency domain. The objective of designing controllers is to guarantee the asymptotic stability of the closed-loop system and attenuate the disturbance from earthquake excitation. After analyzing the frequency spectrum of some typical earthquakes, a frequency range in which earthquakes have a higher strength and lead to more serious damage to buildings, 0.3-8.8 Hz, is confirmed. Based on H-infinity control theory and linear matrix inequality techniques, a new approach for building vibration control over finite frequency range is presented. In comparison with the entire frequency control, the finite frequency approach proves much better performance in building vibration control over a certain frequency band in which strong earthquakes happen. A three-degree-of-freedom linear building structure under earthquake excitation is considered and simulations are employed to validate the effectiveness of the proposed approach in reducing seismic-excited building vibration. (C) 2009 Elsevier Ltd. All rights reserved.
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