Sliding mode control for structures based on the frequency content of the earthquake loading

Pnevmatikos, NG; Gantes, CJ

dc.contributor.author	Pnevmatikos, NG	en
dc.contributor.author	Gantes, CJ	en
dc.date.accessioned	2014-03-01T01:31:55Z
dc.date.available	2014-03-01T01:31:55Z
dc.date.issued	2009	en
dc.identifier.issn	1738-1584	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19980
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-67649525659&partnerID=40&md5=b2828f267be1d0d40b232cb9ced55694	en
dc.subject	Earthquake engineering	en
dc.subject	FFT	en
dc.subject	Pole assignment	en
dc.subject	Sliding mode control	en
dc.subject	Structural dynamics	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	EXCITED LINEAR STRUCTURES	en
dc.subject.other	SEISMIC RESPONSE	en
dc.subject.other	CIVIL STRUCTURES	en
dc.title	Sliding mode control for structures based on the frequency content of the earthquake loading	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	A control algorithm for seismic protection of building structures based oil the theory of variable structural control or sliding mode control is presented. The paper focus in the design of sliding Surface. A method for determining the sliding Surface by pole assignment algorithm where the poles of the system in the sliding surface are obtained on-line, based on the frequency content of the incoming earthquake signal applied to the structure, is proposed. The proposed algorithm consists of the following steps: (i) On-line FFT process is applied to the incoming part of the signal and its frequency content is recognized. (ii) A transformation of the frequency content to the complex plane is performed and the desired location of poles of the controlled structure oil the sliding surface is estimated. (iii) Based oil the estimated poles the sliding surface is obtained. (iv) Then, the control force which will drive the response trajectory into the estimated sliding surface and force it to stay there all the subsequent time is obtained using Lyapunov stability theory. The above steps are repeated continuously for the entire duration of the incoming earthquake. The potential applications and the effectiveness of the improved control algorithm arc demonstrated by numerical examples. The Simulation results indicate that the response of a structure is reduced significantly compared to the response of the uncontrolled structure, while the required control demand is achievable.	en
heal.publisher	TECHNO-PRESS	en
heal.journalName	Smart Structures and Systems	en
dc.identifier.isi	ISI:000266017600001	en
dc.identifier.volume	5	en
dc.identifier.issue	3	en
dc.identifier.spage	209	en
dc.identifier.epage	221	en