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Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition
Optimal sensor placement is a significant task for structural health monitoring (SHM). In this paper, an SHM system is designed which can recognize the different impact location and impact degree in the composite plate. Firstly, the finite element method is used to simulate the impact, extracting nu...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6308493/ https://www.ncbi.nlm.nih.gov/pubmed/30518094 http://dx.doi.org/10.3390/s18124264 |
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author | Li, Peng Huang, Liuwei Peng, Jiachao |
author_facet | Li, Peng Huang, Liuwei Peng, Jiachao |
author_sort | Li, Peng |
collection | PubMed |
description | Optimal sensor placement is a significant task for structural health monitoring (SHM). In this paper, an SHM system is designed which can recognize the different impact location and impact degree in the composite plate. Firstly, the finite element method is used to simulate the impact, extracting numerical signals of the structure, and the wavelet decomposition is used to extract the band energy. Meanwhile, principal component analysis (PCA) is used to reduce the dimensions of the vibration signal. Following this, the non-dominated sorting genetic algorithm (NSGA-II) is used to optimize the placement of sensors. Finally, the experimental system is established, and the Product-based Neural Network is used to recognize different impact categories. Three sets of experiments are carried out to verify the optimal results. When three sensors are applied, the average accuracy of the impact recognition is 59.14%; when the number of sensors is four, the average accuracy of impact recognition is 76.95%. |
format | Online Article Text |
id | pubmed-6308493 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63084932019-01-04 Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition Li, Peng Huang, Liuwei Peng, Jiachao Sensors (Basel) Article Optimal sensor placement is a significant task for structural health monitoring (SHM). In this paper, an SHM system is designed which can recognize the different impact location and impact degree in the composite plate. Firstly, the finite element method is used to simulate the impact, extracting numerical signals of the structure, and the wavelet decomposition is used to extract the band energy. Meanwhile, principal component analysis (PCA) is used to reduce the dimensions of the vibration signal. Following this, the non-dominated sorting genetic algorithm (NSGA-II) is used to optimize the placement of sensors. Finally, the experimental system is established, and the Product-based Neural Network is used to recognize different impact categories. Three sets of experiments are carried out to verify the optimal results. When three sensors are applied, the average accuracy of the impact recognition is 59.14%; when the number of sensors is four, the average accuracy of impact recognition is 76.95%. MDPI 2018-12-04 /pmc/articles/PMC6308493/ /pubmed/30518094 http://dx.doi.org/10.3390/s18124264 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Li, Peng Huang, Liuwei Peng, Jiachao Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition |
title | Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition |
title_full | Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition |
title_fullStr | Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition |
title_full_unstemmed | Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition |
title_short | Sensor Distribution Optimization for Structural Impact Monitoring Based on NSGA-II and Wavelet Decomposition |
title_sort | sensor distribution optimization for structural impact monitoring based on nsga-ii and wavelet decomposition |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6308493/ https://www.ncbi.nlm.nih.gov/pubmed/30518094 http://dx.doi.org/10.3390/s18124264 |
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