A New Position Measurement System Using a Motion-Capture Camera for WindTunnel Tests

Collection with item attached
2013
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/473788.do
DOI
10.3390/s130912329
Title
A New Position Measurement System Using a Motion-Capture Camera for WindTunnel Tests
Description
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government (Ministry of Science, ICT &Future Planning, MSIP) (No. 2011-0018360).
abstract
Considering the characteristics of wind tunnel tests, a position measurement system that can minimize the effects on the flow of simulated wind must be established. In this study, a motion-capture camera was used to measure the displacement responses of structures in a wind tunnel test, and the applicability of the system was tested. A motion-capture system (MCS) could output 3D coordinates using two-dimensional image coordinates obtained from the camera. Furthermore, this remote sensing system had some flexibility regarding lab installation because of its ability to measure at relatively long distances from the target structures. In this study, we performed wind tunnel tests on a pylon specimen and compared the measured responses of the MCS with the displacements measured with a laser displacement sensor (LDS). The results of the comparison revealed that the time-history displacement measurements from the MCS slightly exceeded those of the LDS. In addition, we confirmed the measuring reliability of the MCS by identifying the dynamic properties (natural frequency, damping ratio, and mode shape) of the test specimen using system identification methods (frequency domain decomposition, FDD). By comparing the mode shape obtained using the aforementioned methods with that obtained using the LDS, we also confirmed that the MCS could construct a more accurate mode shape (bending-deflection mode shape) with the 3D measurements.
provenance
Made available in Cube on 2018-09-28T10:28:52Z (GMT). No. of bitstreams: 0
language
English
author
Park, Hyo Seon
Kim, Ji Young
Kim, Jin Gi
Choi, Se Woon
Kim, Yousok
accessioned
2018-09-28T10:28:52Z
available
2018-09-28T10:28:52Z
issued
2013
citation
SENSORS(13): 9
issn
1424-8220
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/473788.do
Funder
미래창조과학부
Funding Program
리더연구자지원
Project ID
1345197333
Jurisdiction
Rep.of Korea
Project Name
Development of Gene-Scale Design, Self-Diagnosis, and Anti-Aging Technology for Structural Systems in Buildings
rights
openAccess
subject
motion-capture camera
wind tunnel test
3D displacement measurement
vision-based monitoring
type
article


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