Share Email Print

Proceedings Paper

Semi-active control of torsionally responsive structures
Author(s): David A. Shook; Paul N. Roschke; Pei-Yang Lin; Chin-Hsiung Loh
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The mitigation of torsional responses in structures using semi-active devices is pursued in the current study. Multiple magnetorheological (MR) dampers are employed for real-time control of response of a benchmark structure to earthquake excitations. MR damper resistance levels are intelligently managed by a global fuzzy logic controller (FLC). The FLC is generated using a controlled-elitist genetic algorithm (GA). Development of an optimal FLC is expedited by a discretized search space of fuzzy logic membership functions. To enable robust control a training excitation is created using the RSPMatch2005 algorithm which modifies historic ground records in the time-domain by wavelet operations. Both numerical and large-scale experimental efforts are undertaken to validate the proposed control system. Results show the GA-optimized FLC performs superior to passive operation in 42% of considered cases.

Paper Details

Date Published: 18 April 2008
PDF: 12 pages
Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 69281E (18 April 2008); doi: 10.1117/12.776803
Show Author Affiliations
David A. Shook, Skidmore, Owings, and Merrill (United States)
Paul N. Roschke, Texas A&M Univ. (United States)
Pei-Yang Lin, National Ctr. for Research on Earthquake Engineering (Taiwan)
Chin-Hsiung Loh, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 6928:
Active and Passive Smart Structures and Integrated Systems 2008
Mehdi Ahmadian, Editor(s)

© SPIE. Terms of Use
Back to Top