Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation
<p>For vibration-based structural health monitoring (SHM) of wind turbine support structures, accelerometers are often used. Besides the structural acceleration, the measured quantity also contains the acceleration component due to gravity, which is known as tilt error. This tilt error must be...
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| Language: | English |
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Copernicus Publications
2025-01-01
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| Series: | Wind Energy Science |
| Online Access: | https://wes.copernicus.org/articles/10/193/2025/wes-10-193-2025.pdf |
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| author | C. Jonscher P. Helming D. Märtins A. Fischer D. Bonilla B. Hofmeister T. Grießmann R. Rolfes |
| author_facet | C. Jonscher P. Helming D. Märtins A. Fischer D. Bonilla B. Hofmeister T. Grießmann R. Rolfes |
| author_sort | C. Jonscher |
| collection | DOAJ |
| description | <p>For vibration-based structural health monitoring (SHM) of wind turbine support structures, accelerometers are often used. Besides the structural acceleration, the measured quantity also contains the acceleration component due to gravity, which is known as tilt error. This tilt error must be quantified and taken into account; otherwise it can lead to incorrect evaluations, especially in the fatigue estimation or the dynamic displacement estimation using accelerometers. The standard solution is to explicitly measure the tilt angle, which requires an additional sensor for each measurement point and is not applicable for already recorded measurements without tilt information. Therefore, a novel tilt error compensation method is presented by using the static bending line. As a result the influence of the tilt error can be estimated in advance, and no additional sensors for tilt measurement are needed.</p>
<p>The compensation method is applied to accelerometer measurements of an onshore wind turbine tower and validated with contactless absolute distance measurements from a terrestrial laser scanning (TLS) system.</p>
<p>The position and frequency-dependent tilt error of the investigated tower has a significant influence on the quasi-static motion below 0.2 Hz with a minimum amplitude error of 9 %, whereas the normalised bending mode shapes around 0.3 Hz are only slightly affected.</p> |
| format | Article |
| id | doaj-art-46795b44370342b6900f21eb99b5606a |
| institution | Kabale University |
| issn | 2366-7443 2366-7451 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Wind Energy Science |
| spelling | doaj-art-46795b44370342b6900f21eb99b5606a2025-01-22T06:05:11ZengCopernicus PublicationsWind Energy Science2366-74432366-74512025-01-011019320510.5194/wes-10-193-2025Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validationC. Jonscher0P. Helming1D. Märtins2A. Fischer3D. Bonilla4B. Hofmeister5T. Grießmann6R. Rolfes7ForWind, Institute of Structural Analysis, Leibniz University Hannover, Appelstraße 9A, 30167 Hanover, GermanyBremen Institute for Metrology, Automation and Quality Science, University of Bremen, Linzer Str. 13, 28359 Bremen, GermanyForWind, Institute of Structural Analysis, Leibniz University Hannover, Appelstraße 9A, 30167 Hanover, GermanyBremen Institute for Metrology, Automation and Quality Science, University of Bremen, Linzer Str. 13, 28359 Bremen, GermanyForWind, Institute of Structural Analysis, Leibniz University Hannover, Appelstraße 9A, 30167 Hanover, GermanyForWind, Institute of Structural Analysis, Leibniz University Hannover, Appelstraße 9A, 30167 Hanover, GermanyForWind, Institute of Structural Analysis, Leibniz University Hannover, Appelstraße 9A, 30167 Hanover, GermanyForWind, Institute of Structural Analysis, Leibniz University Hannover, Appelstraße 9A, 30167 Hanover, Germany<p>For vibration-based structural health monitoring (SHM) of wind turbine support structures, accelerometers are often used. Besides the structural acceleration, the measured quantity also contains the acceleration component due to gravity, which is known as tilt error. This tilt error must be quantified and taken into account; otherwise it can lead to incorrect evaluations, especially in the fatigue estimation or the dynamic displacement estimation using accelerometers. The standard solution is to explicitly measure the tilt angle, which requires an additional sensor for each measurement point and is not applicable for already recorded measurements without tilt information. Therefore, a novel tilt error compensation method is presented by using the static bending line. As a result the influence of the tilt error can be estimated in advance, and no additional sensors for tilt measurement are needed.</p> <p>The compensation method is applied to accelerometer measurements of an onshore wind turbine tower and validated with contactless absolute distance measurements from a terrestrial laser scanning (TLS) system.</p> <p>The position and frequency-dependent tilt error of the investigated tower has a significant influence on the quasi-static motion below 0.2 Hz with a minimum amplitude error of 9 %, whereas the normalised bending mode shapes around 0.3 Hz are only slightly affected.</p>https://wes.copernicus.org/articles/10/193/2025/wes-10-193-2025.pdf |
| spellingShingle | C. Jonscher P. Helming D. Märtins A. Fischer D. Bonilla B. Hofmeister T. Grießmann R. Rolfes Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation Wind Energy Science |
| title | Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation |
| title_full | Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation |
| title_fullStr | Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation |
| title_full_unstemmed | Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation |
| title_short | Dynamic displacement measurement of a wind turbine tower using accelerometers: tilt error compensation and validation |
| title_sort | dynamic displacement measurement of a wind turbine tower using accelerometers tilt error compensation and validation |
| url | https://wes.copernicus.org/articles/10/193/2025/wes-10-193-2025.pdf |
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