Reference channel selection strategy in system identification of bridge structure

Yu Xin Zhang, S. H. Sim, B F Spencer, Jun Xiao

Research output: Contribution to journalArticle

Abstract

Based on basic idea of natural excitation technique (NExT) and eigen value realization algorithm (ERA), a solvtion process was formulated adopting NExT/ERA and multiple reference channel. The strategies for determining reference channels were suggested and investigated in the mean time. First, two evaluation criteria concerning modal frequencies and modal shapes were proposed to evaluate the identification results; then, according to the criteria, the strategies for multiple references selection were proposed and discussed herein. The strategy could be used to exclude bad references. In complex structures too many sensors might be on nodes of natural modes, using the proposed strategy many sensors were excluded and only a few necessary sensors were retained. By applying the proposed method to Bill Emerson Bridge well known worldwide as a ASCE benchmark model for structural control problems of cable-stayed bridges, the study nere was proved to be meaningful. The results provided a helpful reference for system identification of general cable-stayed bridges.

Original languageEnglish (US)
Pages (from-to)181-184
Number of pages4
JournalZhendong yu Chongji/Journal of Vibration and Shock
Volume30
Issue number12
StatePublished - Dec 1 2011

Fingerprint

bridges (structures)
system identification
Identification (control systems)
Cable stayed bridges
Sensors
cables
sensors
excitation
evaluation

Keywords

  • Cable-stayed bridges
  • ERA
  • NExT
  • Reference channel
  • System identification

ASJC Scopus subject areas

  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

Cite this

Reference channel selection strategy in system identification of bridge structure. / Zhang, Yu Xin; Sim, S. H.; Spencer, B F; Xiao, Jun.

In: Zhendong yu Chongji/Journal of Vibration and Shock, Vol. 30, No. 12, 01.12.2011, p. 181-184.

Research output: Contribution to journalArticle

@article{54a941fa0d5141c09f8c9035578abb17,
title = "Reference channel selection strategy in system identification of bridge structure",
abstract = "Based on basic idea of natural excitation technique (NExT) and eigen value realization algorithm (ERA), a solvtion process was formulated adopting NExT/ERA and multiple reference channel. The strategies for determining reference channels were suggested and investigated in the mean time. First, two evaluation criteria concerning modal frequencies and modal shapes were proposed to evaluate the identification results; then, according to the criteria, the strategies for multiple references selection were proposed and discussed herein. The strategy could be used to exclude bad references. In complex structures too many sensors might be on nodes of natural modes, using the proposed strategy many sensors were excluded and only a few necessary sensors were retained. By applying the proposed method to Bill Emerson Bridge well known worldwide as a ASCE benchmark model for structural control problems of cable-stayed bridges, the study nere was proved to be meaningful. The results provided a helpful reference for system identification of general cable-stayed bridges.",
keywords = "Cable-stayed bridges, ERA, NExT, Reference channel, System identification",
author = "Zhang, {Yu Xin} and Sim, {S. H.} and Spencer, {B F} and Jun Xiao",
year = "2011",
month = "12",
day = "1",
language = "English (US)",
volume = "30",
pages = "181--184",
journal = "Zhendong yu Chongji/Journal of Vibration and Shock",
issn = "1000-3835",
publisher = "Chinese Vibration Engineering Society",
number = "12",

}

TY - JOUR

T1 - Reference channel selection strategy in system identification of bridge structure

AU - Zhang, Yu Xin

AU - Sim, S. H.

AU - Spencer, B F

AU - Xiao, Jun

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Based on basic idea of natural excitation technique (NExT) and eigen value realization algorithm (ERA), a solvtion process was formulated adopting NExT/ERA and multiple reference channel. The strategies for determining reference channels were suggested and investigated in the mean time. First, two evaluation criteria concerning modal frequencies and modal shapes were proposed to evaluate the identification results; then, according to the criteria, the strategies for multiple references selection were proposed and discussed herein. The strategy could be used to exclude bad references. In complex structures too many sensors might be on nodes of natural modes, using the proposed strategy many sensors were excluded and only a few necessary sensors were retained. By applying the proposed method to Bill Emerson Bridge well known worldwide as a ASCE benchmark model for structural control problems of cable-stayed bridges, the study nere was proved to be meaningful. The results provided a helpful reference for system identification of general cable-stayed bridges.

AB - Based on basic idea of natural excitation technique (NExT) and eigen value realization algorithm (ERA), a solvtion process was formulated adopting NExT/ERA and multiple reference channel. The strategies for determining reference channels were suggested and investigated in the mean time. First, two evaluation criteria concerning modal frequencies and modal shapes were proposed to evaluate the identification results; then, according to the criteria, the strategies for multiple references selection were proposed and discussed herein. The strategy could be used to exclude bad references. In complex structures too many sensors might be on nodes of natural modes, using the proposed strategy many sensors were excluded and only a few necessary sensors were retained. By applying the proposed method to Bill Emerson Bridge well known worldwide as a ASCE benchmark model for structural control problems of cable-stayed bridges, the study nere was proved to be meaningful. The results provided a helpful reference for system identification of general cable-stayed bridges.

KW - Cable-stayed bridges

KW - ERA

KW - NExT

KW - Reference channel

KW - System identification

UR - http://www.scopus.com/inward/record.url?scp=84862930445&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862930445&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84862930445

VL - 30

SP - 181

EP - 184

JO - Zhendong yu Chongji/Journal of Vibration and Shock

JF - Zhendong yu Chongji/Journal of Vibration and Shock

SN - 1000-3835

IS - 12

ER -