System identification of civil engineering structures with multiple inputs by decoupling output signals

Jian Li, Manuel Ruiz-Sandoval, Billie F. Spencer, Amr S. Elnashai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

System identification of civil engineering structures are often formulated as Multiple-Input, Multiple-Output (MIMO) problems due to the complexity of loading conditions such as differential ground motion, which is also multi-directional in nature. Such MIMO system identification problems are challenging due to strong coupling between the contributions of multiple ground motion inputs to each individual response. Compared with Single-Input, Multiple-Output (SIMO) system identification, MIMO problems are often more computationally complex and error prone. In this paper, a new system identification strategy is proposed in which a more complex MIMO problem is converted into a number of SIMO problems by decoupling the contribution of multiple inputs to the outputs. A QR-factorization based approach is adopted for the decoupling and its accuracy is investigated. The effectiveness of the proposed strategy is demonstrated through applications to a two-span straight bridge and a four-span curved bridge, both are highway bridges.

Original languageEnglish (US)
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014
PublisherSPIE
ISBN (Print)9780819499875
DOIs
StatePublished - Jan 1 2014
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014 - San Diego, CA, United States
Duration: Mar 10 2014Mar 13 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9061
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014
CountryUnited States
CitySan Diego, CA
Period3/10/143/13/14

Fingerprint

Civil Engineering
MIMO (control systems)
system identification
Civil engineering
System Identification
Decoupling
decoupling
Identification (control systems)
Multiple-input multiple-output (MIMO)
engineering
output
Output
QR Factorization
Highway bridges
Multiple-input multiple-output (MIMO) Systems
Motion
Identification Problem
Strong Coupling
Factorization
factorization

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Li, J., Ruiz-Sandoval, M., Spencer, B. F., & Elnashai, A. S. (2014). System identification of civil engineering structures with multiple inputs by decoupling output signals. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014 [90611I] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9061). SPIE. https://doi.org/10.1117/12.2044191
Li, Jian ; Ruiz-Sandoval, Manuel ; Spencer, Billie F. ; Elnashai, Amr S. / System identification of civil engineering structures with multiple inputs by decoupling output signals. Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014. SPIE, 2014. (Proceedings of SPIE - The International Society for Optical Engineering).
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Li, J, Ruiz-Sandoval, M, Spencer, BF & Elnashai, AS 2014, System identification of civil engineering structures with multiple inputs by decoupling output signals. in Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014., 90611I, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9061, SPIE, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, San Diego, CA, United States, 3/10/14. https://doi.org/10.1117/12.2044191

System identification of civil engineering structures with multiple inputs by decoupling output signals. / Li, Jian; Ruiz-Sandoval, Manuel; Spencer, Billie F.; Elnashai, Amr S.

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014. SPIE, 2014. 90611I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9061).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Li J, Ruiz-Sandoval M, Spencer BF, Elnashai AS. System identification of civil engineering structures with multiple inputs by decoupling output signals. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014. SPIE. 2014. 90611I. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2044191