Structural Monitoring and Maintenance

  • 제3권4호
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  • Pages.395-406
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  • 2016
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  • 2288-6605(pISSN)
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  • 2288-6613(eISSN)
테크노프레스 (Techno-Press)
권호 표지
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DOI QR Code

Output only structural modal identification using matrix pencil method

  • 투고 : 2016.11.03
  • 심사 : 2016.12.10
  • 발행 : 2016.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Modal parameter identification has received much attention recently for their usefulness in earthquake engineering, damage detection and structural health monitoring. The identification method based on Matrix Pencil technique is adopted in this paper to identify structural modal parameters, such as natural frequencies, damping ratios and modal shapes using impulse vibration responses. This method can also be applied to dynamic responses induced by stationary and white-noise inputs since the auto- and cross-correlation function of the two outputs has the same form as the impulse response dynamic functions. Matrix Pencil method is very robust to noise contained in the measurement data. It has a lower variance of estimates of the parameters of interest than the Polynomial Method, and is also computationally more efficient. The numerical simulation results show that this technique can identify modal parameters accurately even if the noise level is high.

키워드

과제정보

연구 과제 주관 기관 : NASA Cooperative

참고문헌

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피인용 문헌

  1. Parameter Estimation of Autoregressive-Exogenous and Autoregressive Models Subject to Missing Data Using Expectation Maximization vol.5, pp.None, 2016, https://doi.org/10.3389/fbuil.2019.00109