Identification of Bouc-Wen hysteretic systems using particle swarm optimization

Authors:
A. E. Charalampakis;C. K. Dimou
Affiliations:
National Technical University of Athens, 15780 Athens, Greece;National Technical University of Athens, 15780 Athens, Greece
Venue:
Computers and Structures
Year:
2010

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Abstract

In this paper, two variants of the particle swarm optimization (PSO) algorithm are employed for the identification of Bouc-Wen hysteretic systems. The first variant is simple while the other is enhanced, as it implements additional operators. The algorithms are utilized for the identification of a Bouc-Wen hysteretic system that represents a full scale bolted-welded steel connection. The purpose of this work is to assess their comparative performance against other evolutionary algorithms in a highly non-linear identification problem on various levels of computational budget. The enhanced PSO algorithm outperforms its competitors in terms of both accuracy and robustness.