Energy Harvesting From Bistable Systems Under Random Excitation

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dc.contributor.authorLentz, Lukas
dc.contributor.authorNguyen, Huy The
dc.contributor.authorWagner, Utz von
dc.date.accessioned2020-03-20T08:28:05Z
dc.date.available2020-03-20T08:28:05Z
dc.date.issued2017
dc.description.abstractThe transformation of otherwise unused vibrational energy into electric energy through the use of piezoelectric energy harvesting devices has been the subject of numerous investigations. The mechanical part of such a device is often constructed as a cantilever beam with applied piezo patches. If the harvester is designed as a linear resonator the power output relies strongly on the matching of the natural frequency of the beam and the frequency of the harvested vibration which restricts the applicability since most vibrations which are found in built environments are broad-banded or stochastic in nature. A possible approach to overcome this restriction is the use of permanent magnets to impose a nonlinear restoring force on the beam that leads to a broader operating range due to large amplitude motions over a large range of excitation frequencies. In this paper such a system is considered introducing a refined modeling with a modal expansion that incorporates two modal functions and a refined modeling of the magnet beam interaction. The corresponding probability density function in case of random excitation is calculated by the solution of the corresponding Fokker-Planck equation and compared with results from Monte Carlo simulations. Finally some measurements of ambient excitations are discussed.en
dc.description.sponsorshipDFG, 253161314, Untersuchung des nichtlinearen dynamischen Verhaltens von stochastisch erregten Energy Harvesting Systemen mittels Lösung der Fokker-Planck-Gleichungen
dc.identifier.eissn2080-9948
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/10947
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-9837
dc.language.isoenen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitende
dc.subject.otherenergy harvestingen
dc.subject.otherbistable oscillatoren
dc.subject.otherrandom excitationen
dc.subject.otherFokker-Planck equationen
dc.subject.otherambient excitationen
dc.titleEnergy Harvesting From Bistable Systems Under Random Excitationen
dc.typeArticleen
dc.type.versionsubmittedVersionen
dcterms.bibliographicCitation.issue1en
dcterms.bibliographicCitation.journaltitleMachine Dynamics Researchen
dcterms.bibliographicCitation.originalpublishernameInstitute of Machine Design Fundamentalsen
dcterms.bibliographicCitation.originalpublisherplaceWarsawen
dcterms.bibliographicCitation.pageend16en
dcterms.bibliographicCitation.pagestart5en
dcterms.bibliographicCitation.volume41en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme::Inst. Mechanik::FG Mechatronische Maschinendynamikde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Mechatronische Maschinendynamikde
tub.affiliation.instituteInst. Mechanikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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