請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/43027
標題: H (a) drift control of time-delayed seismic structures
作者: Chang, C.C.
林其璋
Lin, C.C.
關鍵字: H-infinity control
time delay
stability analysis
active control
active tendon system
state feedback control
response-controlled structure
output-feedback control
mass driver
system
cable-stayed bridges
active control
benchmark problems
infinity-control
design
compensation
buildings
期刊/報告no:: Earthquake Engineering and Engineering Vibration, Volume 8, Issue 4, Page(s) 617-626.
摘要: In this paper, an optimal H (a) control algorithm was applied to the design of an active tendon system installed at the first story of a multi-story building to reduce its interstory drift due to earthquake excitations. To achieve optimal control performance and to guarantee the stability of the control system, an optimum strategy to select control parameters gamma and alpha was developed. Analytical expressions of the upper and the lower bounds of gamma and alpha were obtained for a single degree-of-freedom system with state feedback control. The selection ranges for both gamma and alpha are graphically defined so that the controlled system is always stable and the control performance is better than by the conventional LQR control algorithm. Numerical results from a controlled three-story building under real earthquake excitations demonstrate that the peak first interstory drift can be significantly reduced with maximum control force around 10% of the building weight. An optimum design flow chart was provided. In addition, for a time-delayed structure, this study gave explicit formulae to calculate the critical values of gamma and alpha. The system stability and control performance can thus be guaranteed even with time delay.
URI: http://hdl.handle.net/11455/43027
ISSN: 1671-3664
文章連結: http://dx.doi.org/10.1007/s11803-009-9117-1
顯示於類別:土木工程學系所

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