Publication detail
Verified nonlinear model of piezoelectric energy harvester
RUBEŠ, O. BRABLC, M. HADAŠ, Z.
English title
Verified nonlinear model of piezoelectric energy harvester
Type
conference paper
Language
en
Original abstract
Energy harvesting is an important topic today. Complex monitoring systems with many nodes need energy sources and vibration energy harvesters (VEHs) could be one type of them. Mathematical model of the VEH is necessary instrument to estimate possible harvested power. This paper deals with piezoelectric VEH in setting as cantilever beam with tip mass. Traditional linear model of this type of VEH is simple, however, it represents the VEH only in one operating point and in another one (another amplitude of excitation vibrations) it could return wrong results. The nonlinear model of VEH is introduced in this paper with its parameters estimation. The nonlinear model is compared with linear model and experiment to demonstrate difference between them in amplitude frequency characteristics. Finally, the average harvested power from harmonic vibrations is measured experimentally and compared with prediction from linear and nonlinear model.
English abstract
Energy harvesting is an important topic today. Complex monitoring systems with many nodes need energy sources and vibration energy harvesters (VEHs) could be one type of them. Mathematical model of the VEH is necessary instrument to estimate possible harvested power. This paper deals with piezoelectric VEH in setting as cantilever beam with tip mass. Traditional linear model of this type of VEH is simple, however, it represents the VEH only in one operating point and in another one (another amplitude of excitation vibrations) it could return wrong results. The nonlinear model of VEH is introduced in this paper with its parameters estimation. The nonlinear model is compared with linear model and experiment to demonstrate difference between them in amplitude frequency characteristics. Finally, the average harvested power from harmonic vibrations is measured experimentally and compared with prediction from linear and nonlinear model.
Keywords in English
Energy Harvesting
Released
10.10.2018
Publisher
EDP Sciences
Location
Lisbon, Portugal
ISSN
2261-236X
Book
The 14th International Conference on Vibration Engineering and Technology of Machinery (VETOMAC XIV)
Number
211
Edition number
1
Pages from–to
1–6
Pages count
6
BIBTEX
@inproceedings{BUT151683,
author="Ondřej {Rubeš} and Martin {Brablc} and Jan {Smilek} and Zdeněk {Hadaš},
title="Verified nonlinear model of piezoelectric energy harvester",
booktitle="The 14th International Conference on Vibration Engineering and Technology of Machinery (VETOMAC XIV)",
year="2018",
number="211",
month="October",
pages="1--6",
publisher="EDP Sciences",
address="Lisbon, Portugal",
issn="2261-236X"
}