Electromagnetic vibration energy harvester with tunable resonance frequency based on stress modulation of flexible springs

Yunjia Li; Chenyuan Zhou; Qi Cao; Xinyi Wang; Dayong Qiao; Kai Tao

doi:10.3390/mi12091130

Electromagnetic vibration energy harvester with tunable resonance frequency based on stress modulation of flexible springs

Yunjia Li, Chenyuan Zhou, Qi Cao, Xinyi Wang, Dayong Qiao, Kai Tao

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

This paper presents a compact electromagnetic vibrational energy harvester (EVEH) with tunable resonance frequency. The resonance frequency of the EVEH is tuned by adjusting the axial stress in the flexible polymeric springs, which is realized by physically pulling and pushing the springs. The stress tuning functionality is realized with a compact structure with small volume. The total frequency tuning range of the proposed EVEH is 56 Hz (74–130 Hz), which is 64% of the natural resonance frequency of the EVEH (88 Hz). It is found that the tensile stress increases the resonance frequency of the EVEH, while the compressive stress firstly reduces the resonance frequency and then increases the resonance frequency due to buckling.

Original language	English
Article number	1130
Journal	Micromachines
Volume	12
Issue number	9
DOIs	https://doi.org/10.3390/mi12091130
State	Published - Sep 2021

Keywords

Polymer beam
Tunable resonant frequency
Vibration energy harvesting

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10.3390/mi12091130

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title = "Electromagnetic vibration energy harvester with tunable resonance frequency based on stress modulation of flexible springs",

abstract = "This paper presents a compact electromagnetic vibrational energy harvester (EVEH) with tunable resonance frequency. The resonance frequency of the EVEH is tuned by adjusting the axial stress in the flexible polymeric springs, which is realized by physically pulling and pushing the springs. The stress tuning functionality is realized with a compact structure with small volume. The total frequency tuning range of the proposed EVEH is 56 Hz (74–130 Hz), which is 64% of the natural resonance frequency of the EVEH (88 Hz). It is found that the tensile stress increases the resonance frequency of the EVEH, while the compressive stress firstly reduces the resonance frequency and then increases the resonance frequency due to buckling.",

keywords = "Polymer beam, Tunable resonant frequency, Vibration energy harvesting",

author = "Yunjia Li and Chenyuan Zhou and Qi Cao and Xinyi Wang and Dayong Qiao and Kai Tao",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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T1 - Electromagnetic vibration energy harvester with tunable resonance frequency based on stress modulation of flexible springs

AU - Li, Yunjia

AU - Zhou, Chenyuan

AU - Cao, Qi

AU - Wang, Xinyi

AU - Qiao, Dayong

AU - Tao, Kai

PY - 2021/9

Y1 - 2021/9

N2 - This paper presents a compact electromagnetic vibrational energy harvester (EVEH) with tunable resonance frequency. The resonance frequency of the EVEH is tuned by adjusting the axial stress in the flexible polymeric springs, which is realized by physically pulling and pushing the springs. The stress tuning functionality is realized with a compact structure with small volume. The total frequency tuning range of the proposed EVEH is 56 Hz (74–130 Hz), which is 64% of the natural resonance frequency of the EVEH (88 Hz). It is found that the tensile stress increases the resonance frequency of the EVEH, while the compressive stress firstly reduces the resonance frequency and then increases the resonance frequency due to buckling.

AB - This paper presents a compact electromagnetic vibrational energy harvester (EVEH) with tunable resonance frequency. The resonance frequency of the EVEH is tuned by adjusting the axial stress in the flexible polymeric springs, which is realized by physically pulling and pushing the springs. The stress tuning functionality is realized with a compact structure with small volume. The total frequency tuning range of the proposed EVEH is 56 Hz (74–130 Hz), which is 64% of the natural resonance frequency of the EVEH (88 Hz). It is found that the tensile stress increases the resonance frequency of the EVEH, while the compressive stress firstly reduces the resonance frequency and then increases the resonance frequency due to buckling.

KW - Polymer beam

KW - Tunable resonant frequency

KW - Vibration energy harvesting

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DO - 10.3390/mi12091130

M3 - 文章

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SN - 2072-666X

VL - 12

JO - Micromachines

JF - Micromachines

IS - 9

M1 - 1130

ER -

Electromagnetic vibration energy harvester with tunable resonance frequency based on stress modulation of flexible springs

Abstract

Keywords

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