Study on structure optimization of a piezoelectric cantilever with a proof mass for vibration-powered energy harvesting system

Li, Yanning; Li, Wen; Guo, Tong; Yan, Zhidan; Fu, Xing; Hu, Xiaotang

doi:10.1116/1.3119677

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…Additionally, it is also used for the device design optimization, in order to find the optimal parameters. Many previous researches have developed analytical power models describing the effect of the parameters on the generated output power of the piezoelectric energy harvesters [31][32][33][34][35][36][37][38]. In this work, the analytical power model [25,44] for a piezoelectric bimorph cantilever with a mass placed on the free end developed by Roundy et al is applied [12].…”

Section: Analytical Power Model For Piezoelectric Energy Harvestersmentioning

confidence: 99%

The realization and performance of vibration energy harvesting MEMS devices based on an epitaxial piezoelectric thin film

Isarakorn

Briand

Janphuang

et al. 2011

Smart Mater. Struct.

102

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This paper focuses on the fabrication and evaluation of vibration energy harvesting devices by utilizing an epitaxial Pb(Zr 0.2 Ti 0.8 )O 3 (PZT) thin film. The high quality of the c-axis oriented PZT layer results in a high piezoelectric coefficient and a low dielectric constant, which are key parameters for realizing high performance piezoelectric energy harvesters. Different cantilever structures, with and without a Si proof mass, are realized using micro-patterning techniques optimized for the epitaxial oxide layers, to maintain the piezoelectric properties throughout the process. The characteristics and the energy harvesting performances of the fabricated devices are experimentally investigated and compared against analytical calculations. The optimized device based on a 0.5 μm thick epitaxial PZT film, a cantilever beam of 1 mm × 2.5 mm × 0.015 mm, with a Si proof mass of 1 mm × 0.5 mm × 0.23 mm, generates an output power, current and voltage of, respectively, 13 μW g −2 , 48 μA g −1 and 0.27 V g −1 (g = 9.81 m s −2 ) at the resonant frequency of 2.3 kHz for an optimal resistive load of 5.6 k . The epitaxial PZT harvester exhibits higher power and current with usable voltage, while maintaining lower optimal resistive load as compared with other examples present in the literature. These results indicate the potential of epitaxial PZT thin films for the improvement of the performances of energy harvesting devices.

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Section: Analytical Power Model For Piezoelectric Energy Harvestersmentioning

confidence: 99%

The realization and performance of vibration energy harvesting MEMS devices based on an epitaxial piezoelectric thin film

Isarakorn

Briand

Janphuang

et al. 2011

Smart Mater. Struct.

102

View full text Add to dashboard Cite

show abstract

“…In 2009, Li et al [15] proposed a sandwiched PZT-Si-PZT rectangle cantilever PEH with a nickel proof mass (750 × 750 × 750 μm). The results showed that the resonance frequency can be dramatically reduced by the accession of a proof mass with reasonable weight.…”

Section: Proof Mass For Cantilevermentioning

confidence: 99%

Recent progress on piezoelectric energy harvesting: structures and materials

Jia-dong

Liu

et al. 2018

Adv Compos Hybrid Mater

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With the rapid development of advanced technology, piezoelectric energy harvesting (PEH) with the advantage of simple structure, polluted relatively free, easily minimization, and integration has been used to collect the extensive mechanical energy in our living environment holding great promise to power the self-sustainable system and portable electronics. In this paper, attempts have been made to review the progress of piezoelectric materials and devices used for energy harvesting. The review focused on three parts: structure of piezoelectric devices (cantilever, cymbal, and stacks); theoretical mode, including vibration mode (d 31 and d 33 ) and its responding theories of different devices; and piezoelectric materials, among which the electric performance of Pb(ZrTi)O 3 -based, lead-free-based, and composites applied in bulk/micro/nano-PEH devices were introduced in details. It is suggested that a new structure of PEH should be designed by combining advantages of cantilever, stacks, and cymbal structure. Besides, high d 33 × g 33 value and low ε of piezoelectric materials are required in order to generate high electric output power for bulk/micro/nano-PEH. Additionally, lead-free piezoelectric ceramics is a candidate for manufacturing PEH devices, and nano-composite materials should be developed to further improve the flexibility of piezoelectric materials.

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“…On the other hand, to enhance the power or energy conversion performance of the system and provide design guidance for energy harvesters, optimization studies have been conducted on the geometrical parameters [19][20][21][22] or the electrical parameters [23][24][25][26]. Additionally, topology optimization methods have also been applied [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Uncertainty Analysis of Piezoelectric Vibration Energy Harvesters Using a Finite Element Level-Based Maximum Entropy Approach

Wang

Liao

Mignolet

2021

ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering

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Quantifying effects of system-wide uncertainties (i.e., affecting structural, piezoelectric, and/or electrical components) in the analysis and design of piezoelectric vibration energy harvesters has recently been emphasized. The present investigation proposes first a general methodology to model these uncertainties within a finite element model of the harvester obtained from an existing finite element software. Needed from this software are the matrices relating to the structural properties (mass, stiffness), the piezoelectric capacitance matrix, as well as the structural-piezoelectric coupling terms of the mean harvester. The thermal analogy linking piezoelectric and temperature effects is also extended to permit the use of finite element software that do not have piezoelectric elements but include thermal effects on structures. The approach is applied to a beam energy harvester. Both weak and strong coupling configurations are considered and various scenarios of load resistance tuning are considered, i.e., based on the mean model, for each harvester sample, or based on the entire set of harvesters. The uncertainty is shown to have significant effects in all cases even at a relatively low level and these effects are dominated by the uncertainty on the structure vs. the one on the piezoelectric component. The strongly coupled configuration is shown to be better as it is less sensitive to the uncertainty and its variability in power output can be significantly reduced by the adaptive optimization, and the harvested power can even be boosted if the target excitation frequency falls into the power saturation band of the system.

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Study on structure optimization of a piezoelectric cantilever with a proof mass for vibration-powered energy harvesting system

Abstract: A multi-frequency sandwich type electromagnetic vibration energy harvester

Cited by 7 publications

References 7 publications

The realization and performance of vibration energy harvesting MEMS devices based on an epitaxial piezoelectric thin film

The realization and performance of vibration energy harvesting MEMS devices based on an epitaxial piezoelectric thin film

Recent progress on piezoelectric energy harvesting: structures and materials

Uncertainty Analysis of Piezoelectric Vibration Energy Harvesters Using a Finite Element Level-Based Maximum Entropy Approach

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