Control strategy for mitigating the response of structures subjected to earthquake actions

Pnevmatikos, NG; Gantes, CJ

dc.contributor.author	Pnevmatikos, NG	en
dc.contributor.author	Gantes, CJ	en
dc.date.accessioned	2014-03-01T01:33:04Z
dc.date.available	2014-03-01T01:33:04Z
dc.date.issued	2010	en
dc.identifier.issn	0141-0296	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20300
dc.subject	Dynamic control strategy	en
dc.subject	Earthquake engineering	en
dc.subject	FFT	en
dc.subject	Pole placement	en
dc.subject	Semi-active control	en
dc.subject	Structural control	en
dc.subject	Structural dynamics	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Dynamic controls	en
dc.subject.other	Earthquake engineering	en
dc.subject.other	FFT	en
dc.subject.other	Pole placement	en
dc.subject.other	Semiactive control	en
dc.subject.other	Structural control	en
dc.subject.other	Algorithms	en
dc.subject.other	Civil engineering	en
dc.subject.other	Dynamic loads	en
dc.subject.other	Earthquakes	en
dc.subject.other	Engineering geology	en
dc.subject.other	Fast Fourier transforms	en
dc.subject.other	Poles and zeros	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Poles	en
dc.subject.other	active control	en
dc.subject.other	control system	en
dc.subject.other	earthquake engineering	en
dc.subject.other	Fourier transform	en
dc.subject.other	numerical model	en
dc.subject.other	structural response	en
dc.title	Control strategy for mitigating the response of structures subjected to earthquake actions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.engstruct.2010.08.006	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.engstruct.2010.08.006	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	On-line control strategy for structures subjected to earthquake actions is investigated. The general control strategy consists of monitoring the incoming signal, analyzing it and recognizing its dynamic characteristics, applying the control algorithm for the calculation of the required action, and finally applying this action. Thus, the way in which the structure is controlled, and the algorithm that is used, are based on the dynamic characteristics and the frequency content of the applied dynamic signal. The procedure of selection of poles of the controlled structure, which is critical for the success of the algorithm, is proposed in this paper. The proposed methodology transforms each consecutive part of the signal, as well as the uncontrolled structure, to the complex plane and, depending on their relative positions, and following specific rules, the desired poles of the controlled structure are calculated and adjusted during the earthquake. According to those locations of poles, and using the pole placement algorithm, the feedback matrix is estimated, and then the equivalent forces that should be applied to the structure by the control devices, which are installed on the building, are calculated. Parametric simulations for different dynamic loads and seismic actions are performed, for both single and multi degree of freedom systems. From the numerical results it is shown that the above control procedure is efficient in reducing the response of building structures, with a small amount of required control forces. (C) 2010 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Engineering Structures	en
dc.identifier.doi	10.1016/j.engstruct.2010.08.006	en
dc.identifier.isi	ISI:000283643600017	en
dc.identifier.volume	32	en
dc.identifier.issue	11	en
dc.identifier.spage	3616	en
dc.identifier.epage	3628	en