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《中国科学(E辑:技术科学)(英文版)》 2008-12
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Integrated intelligent control analysis on semi-active structures by using magnetorheological dampers

XU ZhaoDong1 & GUO YingQing2 1Civil Engineering College, Southeast University, Nanjing 210096, China; 2 Automation College, Southeast University, Nanjing 210096, China  
The control strategy is very important for semiactive control or active control systems. An integrated intelligent control strategy for building structures incorpo rated with magnetorheological (MR) dampers subjected to earthquake excitation is proposed. In this strategy, the time-delay problem is solved by a neural network and the control currents of the MR dampers are determined quickly by a fuzzy controller. Through a numerical example of a three-storey structure with one MR damper installed in the first floor, the seismic responses of the uncontrolled, the intelligently controlled, the passiveon controlled, and the passive-off controlled structures under different earthquake excitations are analyzed. Based on the numerical results, it can be found that the time domain and the frequency domain responses are reduced effectively when the MR damper is added in the structure, and the integrated intelligent control strategy has a better earthquake mitigation effect.
【Fund】: the National Natural Science Foundation of China(Grant No.50508010) the Program for New Century Excellent in the Education Ministry of China the Program for Jiangsu Province 333 Talents and the Scientific Research Foundation for the Returned Overseas Chinese Scholars Education Ministry.of China
【CateGory Index】: TP273
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