000022356 001__ 22356
000022356 005__ 20170622150009.0
000022356 04107 $$aeng
000022356 046__ $$k2015-05-25
000022356 100__ $$aJoventino, Carlos
000022356 24500 $$aSYSTEM IDENTIFICATION AND ACTIVE MODAL CONTROL OF A FLEXIBLE TRUSS STRUCTURE

000022356 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022356 260__ $$bNational Technical University of Athens, 2015
000022356 506__ $$arestricted
000022356 520__ $$2eng$$aThe aim of this paper is to illustrate the active control of vibration of a flexible truss structure using a model-based digital controller. The state-space model of the system is derived using a system identification technique known as the Observer/Kalman Filter Identification (OKID) method together with Eigensystem Realization Algorithm (ERA). Based on the measured response of the structure to a chirp input, an explicit state-space model of the equivalent linear system is determined. To reduce the vibrations caused by an impulse force, two active strut members are installed along a vertical of the base bay of the truss. The active strut element consists of a piezoelectric ceramic stack actuator, a force transducer and mechanical interfaces. An integral controller is designed to suppress vibration of the truss. The controller, formulated with the root locus approach, is designed to maximize modal damping of a constructed truss structure. Experimental results illustrate that the active piezoceramic strut actuators and the integral controller can effectively reduce vibration of the truss.

000022356 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022356 653__ $$aFlexible Structures, Active Control, System Identification.

000022356 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022356 720__ $$aJoventino, Carlos$$iJr., Vicente Lopes$$iAbreu, Gustavo
000022356 8560_ $$ffischerc@itam.cas.cz
000022356 8564_ $$s639443$$uhttps://invenio.itam.cas.cz/record/22356/files/C587.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022356 962__ $$r22030
000022356 980__ $$aPAPER