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Optimal design of an array of active tuned mass dampers for wind‐exposed high‐rise buildings
Author(s) -
Venanzi Ilaria,
Ubertini Filippo,
Materazzi Annibale Luigi
Publication year - 2013
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.1502
Subject(s) - serviceability (structure) , tuned mass damper , engineering , structural engineering , accelerometer , damper , reduction (mathematics) , control theory (sociology) , optimization problem , vibration control , nonlinear system , actuator , vibration , computer science , control (management) , mathematics , physics , geometry , electrical engineering , algorithm , quantum mechanics , artificial intelligence , operating system
In this paper, a comprehensive procedure is developed for the optimization of a hybrid control system for tall buildings subjected to wind‐induced vibrations. The control system is made of active tuned mass dampers (ATMDs) and is conceived to mitigate the flexural and torsional response in serviceability limit state conditions. The feedback information necessary to compute the control forces is provided by a limited number of accelerometers arranged over the building's height. To reduce the computational effort, subsequent optimization subprocedures are employed that take advantage of the genetic algorithm to find the solution of the nonlinear, constrained optimization problems. At first, the optimization of the ATMDs' number and positions over the top floor of the building is carried out. Then, the optimal location of the accelerometers over the building's height is obtained. The reduction of the flexural and torsional accelerations is chosen as target of the optimization problem. The technical limitations of the ATMDs, such as the actuators saturation and the limited stroke extensions, are the constraints to the problem. As an illustrative example, a control system is optimized for the response mitigation of a tall building subjected to wind load. Copyright © 2012 John Wiley & Sons, Ltd.