Optimal strain gauge configurations for the estimation of mechanical loads in the main shaft of HAWT

Iriarte Goñi, Xabier; Aginaga García, Jokin; Lerga Valencia, Francisco Javier; Gainza González, Gorka; Ros Ganuza, Javier; Bacaicoa Díaz, Julen

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Optimal strain gauge configurations for the estimation of mechanical loads in the main shaft of HAWT

dc.contributor.author	Iriarte Goñi, Xabier
dc.contributor.author	Aginaga García, Jokin
dc.contributor.author	Lerga Valencia, Francisco Javier
dc.contributor.author	Gainza González, Gorka
dc.contributor.author	Ros Ganuza, Javier
dc.contributor.author	Bacaicoa Díaz, Julen
dc.contributor.department	Ingeniaritza	eu
dc.contributor.department	Institute of Smart Cities - ISC	en
dc.contributor.department	Ingeniería	es_ES
dc.date.accessioned	2021-06-25T12:34:22Z
dc.date.available	2021-06-25T12:34:22Z
dc.date.issued	2020
dc.description	Trabajo presentado a Science of Making Torque from Wind 2020, TORQUE 2020	es_ES
dc.description	Incluye póster	es_ES
dc.description.abstract	In Structural Health Monitoring of wind turbines, measuring the mechanical loads is a key issue. The customary techniques for this task use a full-bridge strain gauge configuration to measure each of the six load components exerted on the shaft. However, using only six strain gauges should be sufficient to estimate the six load components if a one-to-one correspondence was achieved. In this paper a different approach to mechanical loads estimation is presented where, measuring the strain of individual gauges in quarter-bridge configurations, it is possible to estimate all the load components from a single set of gauges. The configurations are optimally determined making use of the D-optimality criterion, which maximises the observability of the estimated components. The approach also provides configurations where the apparent strain related to temperature variations is automatically compensated. Results show several optimal configurations for different measuring conditions and shows that six strain gauges are enough to estimate all the load components. The new approach also opens the possibility to obtain configurations with more strain gauges as well as configurations that have to meet other requirements.	en
dc.format.extent	12 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.1088/1742-6596/1618/2/022034
dc.identifier.issn	1742-6588
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/40053
dc.language.iso	eng	en
dc.publisher	IOP Publishing	en
dc.relation.ispartof	Journal of Physics: Conference Series, 1618 (2020) 022034	en
dc.relation.publisherversion	https://doi.org/10.1088/1742-6596/1618/2/022034
dc.rights	Creative Commons Attribution 3.0 Unported (CC BY 3.0)	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/
dc.subject	Mechanical loads	en
dc.subject	Strain gauges	en
dc.title	Optimal strain gauge configurations for the estimation of mechanical loads in the main shaft of HAWT	en
dc.type	info:eu-repo/semantics/conferenceObject
dc.type.version	info:eu-repo/semantics/publishedVersion	en
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dspace.entity.type	Publication
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