Explorations of displacement and velocity nonlinearities and their effects to power of a magnetically-excited piezoelectric pendulum

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dc.authoridKURT, EROL -- 0000-0002-3615-6926;
dc.contributor.authorUzun, Yunus
dc.contributor.authorKurt, Erol
dc.contributor.authorKurt, H. Hilal
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:26:48Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:26:48Z
dc.date.issued2015
dc.departmentMühendislik Fakültesi
dc.description.abstractThis paper explores the relation of the nonlinearities of displacement and velocity dynamics with the power of a piezoelectric pendulum under a periodic magnetic excitation. Initially, the theoretical formulation including the mechanical, magnetic and electrical terms is realized. Then a simulation study has been done by using the theoretical formulation based on the experimental parameters. Then, a detailed experimental survey has been carried out for some representative system parameters. Results of simulation based on the proposed model are presented and compared with the experimental results. It is observed that the periodic magnetic flux can cause different responses from regular dynamics to chaotic one. Phase space constructions, Poincare sections and FFTs are determined on parameter sets including the excitation frequency f and amplitude U-c of electromagnet. It is proven that the periodic magnetic flux exerts high frequency velocity fluctuations nearby the minimal and maximal values. While the displacement of the tip exhibits a harmonic fluctuation, FFFs prove the high frequency responses in addition to the main frequency. When f differs from the natural frequency of the system f(0), the responses become chaotic. It is proven that lower and higher frequency fluctuations in displacement and velocity, which are different from f(0) decrease the electrical power harvested by the piezoelectric pendulum. However, in the case of rms values of displacement/velocity, the harvested power is perfectly proportional to the rms values. Therefore, useful relations between power and rms values of displacement/velocity have been determined for the estimation of power output in such systems for the first time. The piezoelectric pendulum harvests much energy when f is closed to f(0) and the distance to the magnetic device should be closer in order to decrease the nonlinearities in displacement and velocity. (C) 2015 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [EEEAG-114E017]
dc.description.sponsorshipThis research has been supported by The Scientific and Technological Research Council of Turkey (TUBITAK) under grant EEEAG-114E017.
dc.identifier.doi10.1016/j.sna.2015.01.033
dc.identifier.endpage130en_US
dc.identifier.issn0924-4247
dc.identifier.scopusqualityQ1
dc.identifier.startpage119en_US
dc.identifier.urihttps://doi.org/10.1016/j.sna.2015.01.033
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5713
dc.identifier.volume224en_US
dc.identifier.wosWOS:000351809900017
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofSensors and Actuators A-Physıcal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectPiezoelectric Pendulum
dc.subjectPeriodic Magnetic Field
dc.subjectPower
dc.subjectTHD
dc.subjectrms
dc.titleExplorations of displacement and velocity nonlinearities and their effects to power of a magnetically-excited piezoelectric pendulum
dc.typeArticle

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