A new numerical algorithm for sub-optimal control of earthquake excited linear structures

Mehmet Bakioglu, Unal Aldemir*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Exact optimal classical closed-open-loop control is not achievable for the buildings under seismic excitations since it requires the whole knowledge of earthquake in the control interval. In this study, a new numerical algorithm for the sub-optimal solution of the optimal closed-open-loop control is proposed based on the prediction of near-future earthquake excitation using the Taylor series method and the Kalman filtering technique. It is shown numerically that how the solution is related to the predicted earthquake acceleration values. Simulation results show that the proposed numerical algorithm are better than the closed-loop control and the instantaneous optimal control and proposed numerical solution will approach the exact optimal solution if the more distant future values of the earthquake excitation can be predicted more precisely. Effectiveness of the Kalman filtering technique is also confirmed by comparing the predicted and the observed time history of NS component of the 1940 El Centro earthquake.

Original languageEnglish
Pages (from-to)2601-2616
Number of pages16
JournalInternational Journal for Numerical Methods in Engineering
Volume50
Issue number12
DOIs
Publication statusPublished - 30 Apr 2001

Keywords

  • Kalman filter
  • Optimal control
  • Structural control
  • Taylor series method

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