Active control of earthquake excited structures using fuzzy supervisory technique

Kwan Soon Park, Hyun Moo Koh, Seung Yong Ok

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

A fuzzy supervisory technique for the active control of earthquake-excited building structures is studied in this paper. The method has a hierarchical structure, which consists of a supervisor at the higher level and several sub-controllers at the lower level. Each sub-controller is designed to reduce the story-drift of each floor by using an optimal control theory and a fuzzy logic is adopted to obtain a desirable supervisor. A fuzzy supervisor appropriately tunes the predesigned control gains at every moment by estimating the state of a structure through the fuzzy inference mechanism. The improved seismic control performance can be achieved by converting a simply designed static gain into a real-time variable dynamic gain through a fuzzy tuning process. Example designs and numerical simulations of an earthquake-excited three-story building are performed to prove the validity of the proposed control strategy.

Original languageEnglish
Pages (from-to)761-768
Number of pages8
JournalAdvances in Engineering Software
Volume33
Issue number11-12
DOIs
StatePublished - 1 Nov 2002

Keywords

  • Earthquake-excited structures
  • Fuzzy supervisory technique
  • Seismic performance
  • Vibration control

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