Paper Title:
Experimental Verification of Decentralized Approach for Modal Identification Based on Wireless Smart Sensor Network
  Abstract

This paper provides an experimental verification of decentralized approach for modal test and analysis of a 30 meters long railway overpass bridge. 11 Imote2 smart sensor nodes were implemented on the WSSN. In order to compare the identification precision of different topologies, acceleration responses were obtained under centralized and 3 different decentralized topologies. Local modal parameters were estimated by NExT/ERA within each local group; true modes were then distinguished from spurious modes by EMAC and finite-element analysis. In order to estimate global mode shape, a least square method was used for calculating the normalization factor. Then the global mode shapes were determined by normalization factors and local mode shapes. The result demonstrates that the more overlapping nodes in each group, the more accurate the global mode shape will be; the decentralized approach is workable for modal test of large-scale bridge.

  Info
Periodical
Advanced Materials Research (Volumes 291-294)
Chapter
Surface Engineering/Coatings
Edited by
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
Pages
3-11
DOI
10.4028/www.scientific.net/AMR.291-294.3
Citation
X. J. Ye, T. F. Zhu, Q. S. Yan, W. F. Wang, "Experimental Verification of Decentralized Approach for Modal Identification Based on Wireless Smart Sensor Network", Advanced Materials Research, Vols. 291-294, pp. 3-11, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Fei Xiao, Xian Li Liu, Yan Xin Wang, Li Jia Liu, Da Qu
Chapter 2: Simulation of Machining Processes
Abstract:According to the principle of the experimental modal analysis, this study is based on tool system of the MIKRON UCP 710 numerical control...
159
Authors: Xi Ping Sun, Zhen Yu Zhu, Bing Hao Zhao
Chapter 2: Structural Engineering
Abstract:The project intends to construct steel pipe piles on both sides of trestle wharf, and the soil vibrations caused by piling construction might...
908
Authors: Wei Chih Su, Chiung Shiann Huang, Liane Jye Chen
Chapter 6: Modern Design for Green and Environmental Technologies, Energy-Saving Technologies, Structural and Civil Engineering, Applied Mechanics Applications
Abstract:This work proposes a simple and efficient approach to locating the storeys whose stiffness change in the life cycle of a structure. The...
1051