Experimentally Verified Analytical Models of Piezoelectric Cantilevers in Different Design Configurations

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dc.contributor.authorMachů, Zdeněkcs
dc.contributor.authorRubeš, Ondřejcs
dc.contributor.authorŠeveček, Oldřichcs
dc.contributor.authorHadaš, Zdeněkcs
dc.coverage.issue20cs
dc.coverage.volume21cs
dc.date.accessioned2021-10-30T14:54:28Z
dc.date.available2021-10-30T14:54:28Z
dc.date.issued2021-10-12cs
dc.description.abstractThis paper deals with analytical modelling of piezoelectric energy harvesting systems for generating useful electricity from ambient vibrations and comparing the usefulness of materials commonly used in designing such harvesters for energy harvesting applications. The kinetic energy harvesters have the potential to be used as an autonomous source of energy for wireless applications. Here in this paper, the considered energy harvesting device is designed as a piezoelectric cantilever beam with different piezoelectric materials in both bimorph and unimorph configurations. For both these configurations a single degree-of-freedom model of a kinematically excited cantilever with a full and partial electrode length respecting the dimensions of added tip mass is derived. The analytical model is based on Euler-Bernoulli beam theory and its output is successfully verified with available experimental results of piezoelectric energy harvesters in three different configurations. The electrical output of the derived model for the three different materials (PZT-5A, PZZN-PLZT and PVDF) and design configurations is in accordance with lab measurements which are presented in the paper. Therefore, this model can be used for predicting the amount of harvested power in a particular vibratory environment. Finally, the derived analytical model was used to compare the energy harvesting effectiveness of the three considered materials for both simple harmonic excitation and random vibrations of the corresponding harvesters. The comparison revealed that both PZT-5A and PZZN-PLZT are an excellent choice for energy harvesting purposes thanks to high electrical power output, whereas PVDF should be used only for sensing applications due to low harvested electrical power output.en
dc.formattextcs
dc.format.extent6759-6759cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationSENSORS. 2021, vol. 21, issue 20, p. 6759-6759.en
dc.identifier.doi10.3390/s21206759cs
dc.identifier.issn1424-8220cs
dc.identifier.other172761cs
dc.identifier.urihttp://hdl.handle.net/11012/201799
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofSENSORScs
dc.relation.urihttps://www.mdpi.com/1424-8220/21/20/6759cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1424-8220/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectenergy harvestingen
dc.subjectvibrationsen
dc.subjectpiezoelectricen
dc.subjectanalytical modelen
dc.subjectbeam modelen
dc.subjectequivalent modelen
dc.subjectpower predictionen
dc.titleExperimentally Verified Analytical Models of Piezoelectric Cantilevers in Different Design Configurationsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172761en
sync.item.dbtypeVAVen
sync.item.insts2022.02.04 12:54:03en
sync.item.modts2022.02.04 12:15:38en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav mechaniky těles, mechatroniky a biomechanikycs
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