Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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A Study on Optimal Sensor Design of Static System

정적시스템에서 최적의 센서설계에 대한 연구

  • Received : 2021.03.16
  • Accepted : 2021.05.25
  • Published : 2021.06.30
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Abstract

One of the most important techniques utilized in the maintenance of existing structures is structural health monitoring. Innovative and sensitive sensors as well as real-time measurement systems that can collect more accurate information and evaluate structural performance more explicitly have been developed. Starting from the static equilibrium equation constrained by eigenvectors of stiffness matrix and generalized coordinates, this work presents the optimal sensor placement (OSP) algorithms of D-1 and D-2 algorithms as direct method, FIM-based approach, EI-based algorithm, and the orthogonalization methods using Gran-Schmidt orthgonalization and proper orthogonal decomposition. The validity of the proposed methods is illustrated in a truss structure. The FIM-based approach, EI-based algorithm, and EV-based approach indicated similar sensor locations along the entire span. It is analyzed that the difference of the OSPs comes from the establishment of different weighting matrices, numerical approximation, and the numerically inappreciable difference during the iteration.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (NRF-2020R1F1A1069328).

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