Analysis of Dynamic Characteristics of Tristable Piezoelectric Energy Harvester Based on the Modified Model

Man, Dawei; Xu, Deheng; Kuang, Xingchen; Kang, Xiaofang; Xu, Qinghu

doi:10.1155/2021/3832406

Cited by 3 publications

(3 citation statements)

References 30 publications

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“…𝑄 ̇(𝑡) = −𝑉(𝑡)/𝑅, where R represents the load resistance of external circuit. Through formula (14), the differential equation of motion of TPEH+DEM system can be obtained as follows:…”

Section: Modeling Of Piezoelectric Energy Harvestermentioning

confidence: 99%

“…The early linear piezoelectric energy harvester has a narrow working frequency band, so it is difficult to effectively match with the broadband vibration frequency in the environment, which leads to low energy harvesting efficiency [1][2][3][4][5][6][7][8]. To solve this problem, scholars at home and abroad begin to study the multi-stable piezoelectric energy harvester model to improve the energy harvesting performance of the system [9][10][11][12][13][14][15][16]. Chen et al [17], based on the bi-stable piezoelectric energy harvesting model, analyzed the effects of material parameters, frequency and amplitude of external excitation on the system performance.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Characteristic Analysis of Tri-Stable Piezoelectric Energy Harvester with Double Elastic Amplifiers

Man¹,

Bai²,

Hu³

et al. 2023

JISC

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In order to further improve the vibration energy harvesting efficiency of piezoelectric energy harvester under low frequency environmental excitation, this paper, based on the traditional magnetic tri-stable piezoelectric energy collector model, proposes a tri-stable piezoelectric energy harvester (TPEH+DEM) model with two elastic amplifiers which are installed between the U-shaped frame and the base and between the fixed end of the piezoelectric cantilever beam and the U-shaped frame respectively. Based on Hamilton principle, the motion equation of electromechanical coupling of TPEH+DEM system is established, and the analytical solutions of displacement, output voltage and power of the system are obtained by harmonic balance method. The effects of the mass of elastic amplifier, spring stiffness, magnet spacing and load resistance on the dynamic characteristics of energy harvesting of TPEH+DEM system are analyzed. The result shows that there are two peaks in the response output power of TPEH+DEM system in the operating frequency range. By adjusting the mass and stiffness of the elastic amplifier reasonably, the system can move into the inter-well motion under low external excitation intensity, and produce high output power. Compared with the traditional model which only has an elastic amplifier on the base of piezoelectric energy harvester, TPEH+DEM model has better energy harvesting performance under low frequency and low intensity external excitation.

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Section: Modeling Of Piezoelectric Energy Harvestermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristic Analysis of Tri-Stable Piezoelectric Energy Harvester with Double Elastic Amplifiers

Man¹,

Bai²,

Hu³

et al. 2023

JISC

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show abstract

“…With the rapid advancement of micro/nano electromechanical systems, emerging wireless sensor network technology, widespread across civil infrastructure development projects as well as military operations, medical and industrial production sectors [1][2][3][4]. The current power source for these electronic devices primarily relies on chemical batteries.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental investigation of a positive feedback magnetic-coupled piezoelectric energy harvester

Shi,

Chen,

et al. 2024

Smart Mater. Struct.

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A positive feedback magnetic-coupled piezoelectric energy harvester is proposed to address the limitations of current piezoelectric energy collectors, including restricted acquisition direction, limited acquisition bandwidth, and low energy output. Firstly, the dynamic theoretical model of the energy harvester was established, and the optimization factors were explored, providing a solid theoretical foundation for subsequent research endeavors. The energy capture characteristics of rectangular beam and compound trapezoidal beam were compared through finite element simulation analysis. Subsequently, an experimental platform was constructed and an optimized experimental methodology was devised to analyze the energy capture characteristics and enhance the performance of the energy harvester. The results demonstrate that the positive feedback magnetic-coupled piezoelectric energy harvester with a trapezoidal beam exhibits superior energy capture efficiency. Furthermore, it is observed that the optimized energy harvester possesses wide frequency coverage, multi-directional capabilities, low-frequency adaptability, and facilitates easy vibration. When the 45kΩ resistor is connected in series and subjected to a longitudinal external excitation amplitude of 0.5g, it is capable of generating an average voltage and power output of 4.20V and 0.39mW respectively at a vibration frequency of 9Hz. Similarly, when exposed to a transverse external excitation amplitude of 1g, it can produce an average voltage output of 6.2V and power output of 0.85mW at a vibration frequency of 19Hz. When the inclination angle of the energy harvester is set to 35 degrees, the maximum voltage output occurs at a frequency of 18Hz and the Z-axis to X-axis force ratio of the energy harvester is 1.428. These research findings can serve as valuable references for piezoelectric energy harvesting applications in self-powered microelectronic systems.

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Piezoelectric energy harvesting systems using mechanical tuning techniques

Liu

et al. 2023

Review of Scientific Instruments

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In this review, we review the recent research progress and results of piezoelectric energy harvesters applying mechanical tuning techniques in terms of literature background, methods of mechanical tuning, and practical applications. In the past few decades, piezoelectric energy harvesting techniques and mechanical tuning techniques have received increasing attention and made significant progress. Mechanical-tuning techniques are those that allow the resonant vibration energy harvesters the mechanical resonant frequency values to be adjusted to coincide with the excitation frequency. According to the different tuning methods, this review classifies mechanical-tuning techniques based on magnetic action, different piezoelectric materials, axial load, the variable center of gravity, various stresses, and self-tuning and summarizes the corresponding research results, comparing the differences between the same methods. In addition, the current application of the mechanical-tuning techniques is introduced, and the future development of mechanical tuning techniques is analyzed, facilitating the reader to better understand how mechanical-tuning techniques can improve the output performance of energy harvesters.

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Analysis of Dynamic Characteristics of Tristable Piezoelectric Energy Harvester Based on the Modified Model

Cited by 3 publications

References 30 publications

Dynamic Characteristic Analysis of Tri-Stable Piezoelectric Energy Harvester with Double Elastic Amplifiers

Dynamic Characteristic Analysis of Tri-Stable Piezoelectric Energy Harvester with Double Elastic Amplifiers

Design and experimental investigation of a positive feedback magnetic-coupled piezoelectric energy harvester

Piezoelectric energy harvesting systems using mechanical tuning techniques

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