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Intelligent Engineering Systems Through Artificial Neural Networks, Volume 17

C. H. Dagli
C. H. Dagli
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ASME Press
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A semi-active control system for structures with sensitive equipments is proposed in this paper. While technology of structure control in regular buildings gradually matured and is implemented practically over the last two decades, hospitals and facilities with electronic devices are still vulnerable to seismic loadings. To solve this problem, a hybrid floor isolation system comprising a bidirectional roller pendulum system (RPS) and a controllable magnetorheological (MR) damper is proposed to ameliorate the response of structures under external excitation. For the best performance of the control system, two smart control algorithms for the MR damper are developed. The controllers are designed to automatically switch between displacement-oriented or acceleration-oriented objectives, and the capability of the structure under earthquake can be largely improved. Theoretical analysis is carried out, and the results have demonstrated the feasibility and advantage of the proposed control system on floor-isolated structures.

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