Baseline model based structural health monitoring method under varying environment

Zhao, X. and Lang, Z. (2019) Baseline model based structural health monitoring method under varying environment. Renewable Energy, 138. pp. 1166-1175. ISSN 0960-1481

Abstract

Metadata

Authors/Creators:
  • Zhao, X.
  • Lang, Z.
Copyright, Publisher and Additional Information: Environment has significant impacts on the structure performance and will change features of sensor measurements on the monitored structure. The effect of varying environment needs to be considered and eliminated while conducting structural health monitoring. In order to achieve this purpose, a baseline model based structural health monitoring method is proposed in this paper. The relationship between signal features and varying environment, known as a baseline model, is first established. Then, a tolerance range of the signal feature is evaluated via a data based statistical analysis. Furthermore, the health indicator, which is defined as the proportion of signal features within the tolerance range, is used to judge whether the structural system is in normal working condition or not so as to implement the structural health monitoring. Finally, experimental data analysis for an operating wind turbine is conducted and the results demonstrate the performance of the proposed new technique.
Keywords: Wind turbine; Varying environment; B-spline model; Structural health monitoring
Dates:
  • Accepted: 1 February 2019
  • Published (online): 11 February 2019
  • Published: 1 August 2019
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield)
Depositing User: Symplectic Sheffield
Date Deposited: 04 Apr 2019 11:39
Last Modified: 11 Feb 2020 01:38
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: https://doi.org/10.1016/j.renene.2019.02.007

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