A nonlinear multi-stable piezomagnetoelastic harvester array for low-intensity, low-frequency, and broadband vibrations

Lai, Shih-Kung; Wang, Chen; Zhang, Linhao

doi:10.1016/j.ymssp.2018.12.020

Cited by 69 publications

(34 citation statements)

References 48 publications

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“…When the ratio of deflection to length is less than 1/3 under the appropriate external excitation, the energy harvesting system can be considered as a piecewise-linear system. Therefore, the dynamic equation of the piecewise-linear system can be obtained by ignoring the second, the third, and the fifth terms of the dynamic equation (16), and can be analyzed by the average method [26,32] ,…”

Section: Frequency Response Equationmentioning

confidence: 99%

“…It becomes significant to broaden the response bandwidth and improve the conversion efficiency for the VEH. To achieve this goal, scientists developed many kinds of oscillators based on linear and nonlinear vibration theory, such as bistable models [11][12][13] , multistable models [14][15][16] , and multidegrees models [17][18] . There are also stochastic excitation VEHs [19][20][21] and nonlinear internal resonance VEHs [7,13,22] .…”

Section: Introductionmentioning

confidence: 99%

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Low-frequency and broadband vibration energy harvester driven by mechanical impact based on layer-separated piezoelectric beam

Cao

Xia

2019

Appl. Math. Mech.-Engl. Ed.

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Vibration energy harvesting is to transform the ambient mechanical energy to electricity. How to reduce the resonance frequency and improve the conversion efficiency is very important. In this paper, a layer-separated piezoelectric cantilever beam is proposed for the vibration energy harvester (VEH) for low-frequency and wide-bandwidth operation, which can transform the mechanical impact energy to electric energy. First, the electromechanical coupling equation is obtained by the Euler-Bernoulli beam theory. Based on the average method, the approximate analytical solution is derived and the voltage response is obtained. Furthermore, the physical prototype is fabricated, and the vibration experiment is conducted to validate the theoretical principle. The experimental results show that the maximum power of 0.445 mW of the layer-separated VEH is about 3.11 times higher than that of the non-impact harvester when the excitation acceleration is 0.2 g. The operating frequency bandwidth can be widened by increasing the stiffness of the fundamental layer and decreasing the gap distance of the system. But the increasing of operating frequency bandwidth comes at the cost of reducing peak voltage. The theoretical simulation and the experimental results demonstrate good agreement which indicates that the proposed impact-driving VEH device has advantages for low-frequency and wide-bandwidth. The high performance provides great prospect to scavenge the vibration energy in environment.

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Section: Frequency Response Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low-frequency and broadband vibration energy harvester driven by mechanical impact based on layer-separated piezoelectric beam

Cao

Xia

2019

Appl. Math. Mech.-Engl. Ed.

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“…However, due to the barrier in the potential function, the large-amplitude interwell oscillation does not occur all the time, because the intensity of the vibration sources in nature is uncertain. To solve this problem, tristable [ 160 , 161 , 162 , 163 , 164 , 165 , 166 , 167 ], quadstable [ 168 , 169 , 170 , 171 ] and even pentastable [ 172 , 173 , 174 ] configurations were investigated recently. With more potential wells, the potential energy can be distributed more uniformly, and the barriers between the potential wells can be lower, even though the barriers between the potential wells still exist.…”

Section: Multistable Energy Harvestersmentioning

confidence: 99%

A Review of Piezoelectric Vibration Energy Harvesting with Magnetic Coupling Based on Different Structural Characteristics

Jiang

Liu

Feng³

et al. 2021

Micromachines

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Piezoelectric vibration energy harvesting technologies have attracted a lot of attention in recent decades, and the harvesters have been applied successfully in various fields, such as buildings, biomechanical and human motions. One important challenge is that the narrow frequency bandwidth of linear energy harvesting is inadequate to adapt the ambient vibrations, which are often random and broadband. Therefore, researchers have concentrated on developing efficient energy harvesters to realize broadband energy harvesting and improve energy-harvesting efficiency. Particularly, among these approaches, different types of energy harvesters adopting magnetic force have been designed with nonlinear characteristics for effective energy harvesting. This paper aims to review the main piezoelectric vibration energy harvesting technologies with magnetic coupling, and determine the potential benefits of magnetic force on energy-harvesting techniques. They are classified into five categories according to their different structural characteristics: monostable, bistable, multistable, magnetic plucking, and hybrid piezoelectric–electromagnetic energy harvesters. The operating principles and representative designs of each type are provided. Finally, a summary of practical applications is also shown. This review contributes to the widespread understanding of the role of magnetic force on piezoelectric vibration energy harvesting. It also provides a meaningful perspective on designing piezoelectric harvesters for improving energy-harvesting efficiency.

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“…The authors of [15][16][17][18][19][20][21] demonstrated the usability of bistable resonators for harvesting over a wider operational frequency range, by integrating permanent magnets positioned with respect to another permanent magnet on the resonator. In [22] a compact nonlinear multistable energy harvester array has been presented by Lai et al, for harvesting energy at low frequencies. Hoffmann et al [23,24] developed a harvesting system capable to autonomously adapt the magnetic field strength, acting on the resonator, by adjusting the orientation of a diametrically polarized permanent magnet.…”

Section: Introductionmentioning

confidence: 99%

System-Level Model and Simulation of a Frequency-Tunable Vibration Energy Harvester

et al. 2020

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In this paper, we present a macroscale multiresonant vibration-based energy harvester. The device features frequency tunability through magnetostatic actuation on the resonator. The magnetic tuning scheme uses external magnets on linear stages. The system-level model demonstrates autonomous adaptation of resonance frequency to the dominant ambient frequencies. The harvester is designed such that its two fundamental modes appear in the range of (50,100) Hz which is a typical frequency range for vibrations found in industrial applications. The dual-frequency characteristics of the proposed design together with the frequency agility result in an increased operative harvesting frequency range. In order to allow a time-efficient simulation of the model, a reduced order model has been derived from a finite element model. A tuning control algorithm based on maximum-voltage tracking has been implemented in the model. The device was characterized experimentally to deliver a power output of 500 µW at an excitation level of 0.5 g at the respected frequencies of 63.3 and 76.4 Hz. In a design optimization effort, an improved geometry has been derived. It yields more close resonance frequencies and optimized performance.

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A nonlinear multi-stable piezomagnetoelastic harvester array for low-intensity, low-frequency, and broadband vibrations

Cited by 69 publications

References 48 publications

Low-frequency and broadband vibration energy harvester driven by mechanical impact based on layer-separated piezoelectric beam

Low-frequency and broadband vibration energy harvester driven by mechanical impact based on layer-separated piezoelectric beam

A Review of Piezoelectric Vibration Energy Harvesting with Magnetic Coupling Based on Different Structural Characteristics

System-Level Model and Simulation of a Frequency-Tunable Vibration Energy Harvester

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