Fuzzy logic control for seismic structures with semi-active friction dampers

Lyan-Ywan Lu, Ging Long Lin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Fuzzy logic control has been proven to be an effective control method for various engineering fields. Unlike traditional linear control, the advantage of fuzzy logic system is its inherent robustness to handle nonlinearities and uncertainties of the dynamic system. For this reason, in this paper, a fuzzy logic controller is applied to decide the clamping force in a semi-active friction damper subjected to an earthquake. The response of a three-story shear building equipped with a semi-active friction damper has been simulated. The design of the fuzzy controller is based on parameters obtained by the theory of modal control. The simulation result shows that by using few semi-active friction dampers and sensors, the proposed method is able to achieve better acceleration reduction than the case using multiple passive friction dampers. The control performance of the fuzzy control is also very close to that of the active modal control, and is less sensitive to measurement noise.

Original languageEnglish
Pages (from-to)81-96
Number of pages16
JournalJournal of the Chinese Institute of Civil and Hydraulic Engineering
Volume20
Issue number1
Publication statusPublished - 2008 Mar 1

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

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