Global Sensitivity and Stability Analysis of a Parametrically Excited Energy Harvesting System

Página do item simplificado
dc.contributor.authorCauz, Luiz Oreste [UNESP]
dc.contributor.authorChavarette, Fábio Roberto [UNESP]
dc.contributor.authorde Almeida, Estev˜ao Fuzaro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Estadual de Mato Grosso do Sul (UEMS)
dc.date.accessioned2023-07-29T13:55:44Z
dc.date.available2023-07-29T13:55:44Z
dc.date.issued2023-01-01
dc.description.abstractEnergy harvesting is the process of capturing and transforming ambient energy into a useable form. Solar energy, thermal gradients, acoustical and mechanical vibrations are all examples of energy harvesting sources. Vibration Energy Harversting Systems (VEHS) are systems that employ vibrations as a source. VEHS-based energy harvesters are known as a supplementary power source, which provide small amounts of energy for slow-load applications or to charge and operate remote devices and sensors whose require small amounts of energy to operate, such as hearing aids, pacemakers, spinal cord stimulators, and microelectromechanical systems. The objective of this work is to analyze the stability of a parametrically excited energy harvesting system that uses piezoelectric materials as a transducer. The objective is to optimize the energy produced by analyzing the system’s behavior while the physical parameter values are changed. In this regard, it is essential to do a preliminary global sensitivity analysis of the physical parameters in order to determine which parameters, when altered, influence more to energy production. The Sobol’ indices are used to do the sensitivity analysis. The stability analysis is then performed using the results of Floquet’s Theory and the state transition matrix approximation techniques developed by Sinha and Butcher. Sinha and Butcher’s technique, based on Picard iterations and Chebyshev polynomial expansions, aims to find approximate solutions for periodic systems in time. An essential characteristic that is well documented in the literature is that vibrational energy harvesting systems have efficient responses when the physical parameters of the system are set so that the system operates in resonance with the parametric excitation source. As a result, when the system is in resonance with the external excitation source, significant system stability outcomes are obtained.en
dc.description.affiliationDepartment of Mechanical Engineering S˜ao Paulo State University (FEIS - UNESP), S˜ao Paulo State
dc.description.affiliationUniversidades Estadual de Mato Grosso do Sul - UEMS Nova Andradina, Mato Grosso do Sul
dc.description.affiliationUnespDepartment of Mechanical Engineering S˜ao Paulo State University (FEIS - UNESP), S˜ao Paulo State
dc.format.extent253-263
dc.identifierhttp://dx.doi.org/10.5890/JVTSD.2023.09.001
dc.identifier.citationJournal of Vibration Testing and System Dynamics, v. 7, n. 3, p. 253-263, 2023.
dc.identifier.doi10.5890/JVTSD.2023.09.001
dc.identifier.issn2475-482X
dc.identifier.issn2475-4811
dc.identifier.scopus2-s2.0-85159952975
dc.identifier.urihttp://hdl.handle.net/11449/248863
dc.language.isoeng
dc.relation.ispartofJournal of Vibration Testing and System Dynamics
dc.sourceScopus
dc.subjectApproximate fundamental matrix
dc.subjectGlobal sensitivity analysis
dc.subjectResonance
dc.subjectStability analysis
dc.titleGlobal Sensitivity and Stability Analysis of a Parametrically Excited Energy Harvesting Systemen
dc.typeArtigo
unesp.departmentEngenharia Mecânica - FEISpt

Arquivos

Coleções

Ilha Solteira - FEIS - Faculdade de Engenharia