Seismic control performance indices for magneto-rheological dampers considering simple soil-structure interaction

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28 Citations (Scopus)

Abstract

In this study, two instantaneous optimal control performance indices for seismic control of structures incorporating magneto-rheological (MR) dampers are analytically defined. One of the time dependent performance index uses conventional state vector considering simple soil structure interaction (SSI). However, absolute displacement and absolute velocities are added to the conventional state vector terms and eventually to the other one. SSI effects are also included simply in the second performance index. The response reduction performance of these simple indices is compared with the linear quadratic regulator control (LQR). A three story ¼-scaled structure incorporating an MR damper is taken into account as a numerical example. The power requirement of the MR damper is considered by using an MR damper model which is piece wise invertible. It is obtained from numerical results that the proposed performance indices are as effective as LQR algorithm in uncontrolled seismic structural response reduction performance. However taking SSI effects into account increases structural responses and decreases control effectiveness slightly.

Original languageEnglish
Article number105964
JournalSoil Dynamics and Earthquake Engineering
Volume129
DOIs
Publication statusPublished - Feb 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd

Funding

The author gratefully acknowledges the support from Istanbul Technical University Research Fund, Turkey, Grant No: MAB-2018-41640 . Appendix A The author gratefully acknowledges the support from Istanbul Technical University Research Fund, Turkey, Grant No: MAB-2018-41640.

FundersFunder number
Istanbul Technical University Research Fund
Istanbul Teknik ÜniversitesiMAB-2018-41640

    Keywords

    • Earthquake
    • Instantaneous control
    • MR dampers
    • Semi-active control
    • Soil-structure interaction

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