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SUMMARY:Hybrid Time-Frequency Blind Source Separation towards Ambient Syst
 em Identification of Structures
DTSTART:20110223T103000
DTSTAMP:20260509T063405Z
UID:531701525db720683d2fc2395f57c00d1341773743409fcea8a03c67
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Sriram Narasimhan\, Department of Civil & Environmental En
 gineering\, University of Waterloo\, Waterloo\, Ontario\, Canada\nAbstract
 \n \nThe last two decades have seen extraordinary growth in the developmen
 t and practical implementation of structural control and monitoring techno
 logies in many buildings and bridges world-wide. Central to the effective 
 use of these technologies is our ability to identify the dynamic system pr
 operties under ambient loading conditions.\n\nIn this presentation\, the s
 peaker will introduce a new class of system identification methods based o
 n the principles of blind source separation (BSS). The focus of this prese
 ntation will be on specific tools of BSS that employ second-order statisti
 cs. Conventional BSS methods fail to perform adequately in noisy environme
 nts\, with sparse measurements\, and in the presence of low-energy and clo
 sely-spaced modes. In order to overcome these challenges\, the speaker wil
 l present new methods that integrate time-frequency decomposition of signa
 ls with conventional second-order BSS methods. Results of an ongoing full-
 scale tower study in Canada will also be presented to illustrate the perfo
 rmance of the newly proposed methods.\n\n \nAbout the speaker\n \nDr. Srir
 am Narasimhan currently serves as an Assistant Professor in the Civil and 
 Environmental Engineering at the University of Waterloo in Canada. His mai
 n research areas are in structural control and identification of structura
 l\, mechanical and biological systems. Dr. Narasimhan received his PhD in 
 2005 from Rice University in Houston\, Texas\, USA. In addition to academi
 a\, Dr. Narasimhan has also spent over 5 years working in the consulting i
 ndustry.  He currently serves on the editorial boards of the ASCE Journal 
 of Bridge Engineering and the Journal of Structural Control and Health Mon
 itoring.
LOCATION:GC G1 515
STATUS:CONFIRMED
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