Fuzzy control for seismic protection of semiactive base-isolated structures subjected to near-fault earthquakes
type: Item
instance of: scholarly article
title: Fuzzy control for seismic protection of semiactive base-isolated structures subjected to near-fault earthquakes
zbMATH Open document ID: 1394.93249
DOI: 10.1155/2015/675698
author: Dahai Zhao
author: Yongxing Li
published in: Mathematical Problems in Engineering
publication date: 2018-08-27T00:00:00Z
review text: Summary: This paper proposes a new fuzzy logic controller, which is designed for seismic protection of base-isolated structures utilizing piezoelectric friction damper against near-fault earthquakes for different ground sites. According to the elastic design spectrum that Eurocode 8 recommends, one 5\% damped elastic design spectrum for Chi-Chi earthquake is proposed to generate artificial earthquakes of different ground sites. The proposed controller employs a hierarchic fuzzy control algorithm, in which a supervisory fuzzy controller governs a sublevel fuzzy controller by altering its input normalization factors according to current level of ground motion. In order to simultaneously reduce the base displacement and superstructure responses of the base-isolated structure during seismic excitations, genetic algorithm is employed to optimize the supervisory fuzzy controller and the preload of piezoelectric friction damper. The efficiency of the proposed controller is also compared with passive controller and a linear quadratic Gauss optimal controller. Numerical results show that the proposed fuzzy logic controller has favorable performance in mitigating the responses of the base-isolated structure.
Mathematics Subject Classification ID: 93C95
Mathematics Subject Classification ID: 93C42
zbMATH DE Number: 6926951
Wikidata QID: Q59119410
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2015/675698
OpenAlex ID: W2210339430
description: scientific article; zbMATH DE number 6926951