Detail publikace
Nonlinear vibration energy harvester: Design and oscillating stability analyses
RUBEŠ, O. BRABLC, M. HADAŠ, Z.
Anglický název
Nonlinear vibration energy harvester: Design and oscillating stability analyses
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
Energy harvesting, as an alternative power source, is being widely discussed thanks to emerging technologies like loT, Industry 4.0, or WSNs. This paper deals with a piezoelectric Vibration Energy Harvester (VEH) with auxiliary nonlinear magnetic stiffness. The nonlinear stiffness was designed to increase the average output power of the VEH. A mathematical model is presented to provide a simulation tool for further analysis. A novel method based on stabilization power introduced by a feedback controller to analyse the behaviour of nonlinear VEHs is introduced. The aim of this method is to detect the stability of oscillation amplitudes in relation to the excitation frequency. The result of this method is an amplitude-frequency characteristic and a stability margin around the resonance frequency area. This novel method might be used for an arbitrary nonlinear oscillator, especially for electromagnetic and piezoelectric VEHs. The results were verified by a laboratory experiment on a nonlinear piezoelectric VEH. (C) 2018 Elsevier Ltd. All rights reserved.
Anglický abstrakt
Energy harvesting, as an alternative power source, is being widely discussed thanks to emerging technologies like loT, Industry 4.0, or WSNs. This paper deals with a piezoelectric Vibration Energy Harvester (VEH) with auxiliary nonlinear magnetic stiffness. The nonlinear stiffness was designed to increase the average output power of the VEH. A mathematical model is presented to provide a simulation tool for further analysis. A novel method based on stabilization power introduced by a feedback controller to analyse the behaviour of nonlinear VEHs is introduced. The aim of this method is to detect the stability of oscillation amplitudes in relation to the excitation frequency. The result of this method is an amplitude-frequency characteristic and a stability margin around the resonance frequency area. This novel method might be used for an arbitrary nonlinear oscillator, especially for electromagnetic and piezoelectric VEHs. The results were verified by a laboratory experiment on a nonlinear piezoelectric VEH. (C) 2018 Elsevier Ltd. All rights reserved.
Klíčová slova anglicky
Energy harvesting; Piezoelectric devices; Nonlinear oscillators; Stability; Stability analysis; Limit cycles
Vydáno
15.06.2019
Nakladatel
Elsevier
ISSN
0888-3270
Číslo
125
Strany od–do
170–184
Počet stran
15
BIBTEX
@article{BUT148992,
author="Ondřej {Rubeš} and Martin {Brablc} and Zdeněk {Hadaš},
title="Nonlinear vibration energy harvester: Design and oscillating stability analyses",
year="2019",
number="125",
month="June",
pages="170--184",
publisher="Elsevier",
issn="0888-3270"
}