000021716 001__ 21716
000021716 005__ 20170622131301.0
000021716 04107 $$aeng
000021716 046__ $$k2017-06-15
000021716 100__ $$aMaes, Kristof
000021716 24500 $$aSYNCHRONIZATION OF DATA ACQUISITION SYSTEMS FOR THE PURPOSE OF STRUCTURAL HEALTH MONITORING

000021716 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021716 260__ $$bNational Technical University of Athens, 2017
000021716 506__ $$arestricted
000021716 520__ $$2eng$$aThis paper presents a technique for offline time synchronization of data acquisition systems for linear structures with proportional damping. The technique can be applied when direct synchronization of data acquisition systems is impossible or not sufficiently accurate, for example when multiple measurement nodes with different clock signals are embedded in a health monitoring network. The synchronization is based on the acquired dynamic response of the structure only, and does not require the acquisition of a shared sensor signal or a trigger signal. The time delay is identified from the spurious phase shift of the mode shape components that are obtained from system identification. A demonstration for a laboratory experiment on a cantilever steel beam shows that the proposed methodology can be used for accurate time synchronization, resulting in a significant improvement of the accuracy of the identified mode shapes.

000021716 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021716 653__ $$aTime synchronization, data acquisition, system identification, output-only, structural health monitoring

000021716 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021716 720__ $$aMaes, Kristof$$iLombaert, Geert$$iRoeck, Guido De$$iRezayat, Ali$$iReynders, Edwin
000021716 8560_ $$ffischerc@itam.cas.cz
000021716 8564_ $$s1416663$$uhttps://invenio.itam.cas.cz/record/21716/files/17604.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS28] New experimental techniques for structural identification and health monitoring
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000021716 962__ $$r21500
000021716 980__ $$aPAPER