Location Determination of Impact on the Wind Turbine Blade Surface Based on the FBG and the Time Difference
| Autor: | Wenlei Sun, Wan Yunfa, Xu Tiantian, Hongwei Wang, Wang Bingkai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Letter Turbine blade 020209 energy Acoustics Physics::Optics wind turbine blade (WTB) time difference 02 engineering and technology fiber Bragg grating (FBG) lcsh:Chemical technology Biochemistry Signal Analytical Chemistry law.invention damage detection 020901 industrial engineering & automation Fiber Bragg grating law 0202 electrical engineering electronic engineering information engineering Point (geometry) lcsh:TP1-1185 Electrical and Electronic Engineering Instrumentation Physics Series (mathematics) Mode (statistics) variational mode decomposition (VMD) Atomic and Molecular Physics and Optics Energy operator impact location Energy (signal processing) |
| Zdroj: | Sensors, Vol 21, Iss 232, p 232 (2021) Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | This paper proposes an approach to the determination of the precise location of an impact on the surface of a wind turbine blade (WTB) based on a fiber Bragg grating (FBG) and the time difference, and its effectiveness is verified by experiments. First, the strain on the WTB surface is detected with an FBG. Then, the signal is decomposed into a series of components via variational mode decomposition (VMD), and some signals with impact characteristics are chosen for reconstruction. The instant energy of the reconstructed signal is then amplified through the Teager energy operator (TEO) to identify the time difference between FBGs. Finally, the coordinate of the impact point is obtained by solving the hyperbolic mode with the time difference. The results of experiments demonstrate that the proposed approach exhibits good performance with high accuracy (97%) and low error (12.3 mm). |
| Databáze: | OpenAIRE |
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