The benefits of an asymmetric tri-stable energy harvester in low-frequency rotational motion

Mei, Xutao; Zhou, Shengxi; Yang, Zhichun; Kaizuka, Tsutomu; Nakano, Kimihiko

doi:10.7567/1882-0786/ab0b75

Cited by 43 publications

(21 citation statements)

References 32 publications

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“…An asymmetric tri-stable piezoelectric cantilever beam setup attached to an automobile tyre, similar to the one used by Zhang et al (2018), for harvesting energy from low frequency rotational motion was presented by Mei et al (2019). A theoretical model considering the effect of rotational motion was proposed in circular co-ordinate system, which then was reduced for analyzing performance at constant rotational speeds and ignoring the base excitation motion from the road surface.…”

Section: Energy Harvesters With Asymmetric Potential Well Configurationmentioning

confidence: 99%

Dynamics of symmetric and asymmetric potential well-based piezoelectric harvesters: A comprehensive review

Giri

Ali

Arockiarajan

2020

Journal of Intelligent Material Systems and Structures

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Small and micro-scale energy harvesting is an essential and viable option for the powering of portable and maintenance free electronic devices, wireless sensor nodes, and similar applications. In this regard, piezoelectric harvesters have presented promising outcomes. This article provides a sequential, comprehensive, and informative survey of potential well based models and studies related to piezoelectric harvesters (PEH). Piezoelectric materials used for energy harvesting are discussed briefly, following which a non-dimensional generalized model is derived to set the discussion on a common platform. Dynamics of various potential well configurations are presented using the generalized model before discussing specific models and related studies. The survey is classified into symmetric and asymmetric potential well categories. Under the symmetric head, lumped and distributed parameter linear models and tuning methods for improving the broadband response are discussed. Subsequently, studies related to nonlinear mono-stable, bi-stable, and tri-stable potentials showing interwell, multi-periodic and chaotic oscillations with improved broadband response are discussed. The asymmetric section studies the influence of asymmetries on the performance of the mono-stable, bi-stable, and tri-stable configurations. Few other configurations outside the cantilever type PEH were mentioned, realizing the widespread research in this field. Important observations and future challenges for performance improvement are also discussed.

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Section: Energy Harvesters With Asymmetric Potential Well Configurationmentioning

confidence: 99%

Dynamics of symmetric and asymmetric potential well-based piezoelectric harvesters: A comprehensive review

Giri

Ali

Arockiarajan

2020

Journal of Intelligent Material Systems and Structures

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“…8. As described in [10], an air blower is used to generate the wind with flow rate ranging from 6.2 m• s −1 to 19.9 m• s −1 , and a commercial anemometer is used to monitor the flow rate during the measurement. When the flow rate increases from 6.2 m• s −1 to 9.8 m• s −1 , V sat increases remarkably from 0.49 V to 0.83 V, and an approximately linear relationship has been obtained with slope 0.099V• s• m −1 .…”

Section: Wireless Sensing Performancementioning

confidence: 99%

Voltage Regulation and Power Management for Wireless Flow Sensor Node Self-Powered by Energy Harvester With Enhanced Reliability

Luo²,

Wang

et al. 2019

IEEE Access

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This paper reports a voltage regulation method with power management to enhance the reliability and stability of the self-powered flow rate sensor. Triboelectric energy harvesters are used both as the sensing signals and the power supply. One channel of the raw voltage from wind flow is regulated to a stable signal by the integral circuit, while the other channel is used for energy harvesting to provide the power for the whole circuit. Power management chip with ultra-low power consumption has been utilized with micro controller unit and antenna for wireless transmission. A low deviation of less than 2.5% has been achieved for the flow sensing signal and the temperature has also been monitored simultaneously, which shows promising application for the central air-conditioning system in smart buildings.INDEX TERMS Flow sensor, energy harvester, voltage regulation, wireless sensor networks (WSN).

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“…Then, the analytical solution of contact stress at the seal face is as follows:

σ_{italicEu} = \frac{F_{Eu}}{h}

where

h

is the width of actual seal face. With the length–height ratio of the cantilever beam <5, the Timoshenko beam model is applied to evaluate the influence of shear deformation on the deflection of the cantilever beam

\frac{italicdw}{italicdx} = \frac{- 6 M^{″} x + q {(l - x)}^{3} - 3 F^{″} {(l - x)}^{2} \sin β}{6 E I} + \frac{α_{s} q_{2} x - α_{s} F^{″}}{italicGA} + C_{1}

where

α_{s}

is the shear coefficient and

G

is the shear modulus of the metal seal element.…”

Section: Theoretical Model Of the Radial Metal Sealmentioning

confidence: 99%

“…With the length-height ratio of the cantilever beam <5, the Timoshenko beam model is applied to evaluate the influence of shear deformation on the deflection of the cantilever beam. 48 where s is the shear coefficient and G is the shear modulus of the metal seal element. Substitute the boundary conditions w(0) = 0, (0) = 0, and (l) = 0 into Equation (24), the following results can be obtained:…”

Section: Theoretical Model Of the Radial Metal Sealmentioning

confidence: 99%

Contact mechanical behaviors of radial metal seal for the interval control valve in intelligent well: Modeling and theoretical study

Yang

Zhu

et al. 2019

Energy Science & Engineering

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Intelligent wells equipped with the interval control valve (ICV), which have the potential applications to significantly improve oil production or control the water production of wells and fields, are more and more widely utilized in the oilfields. The radial metal seal of an ICV is intended to isolate the flow of produced fluids between the casing annulus and the well tubing. The contact mechanical behaviors of the radial metal seal are essential to the structural design and reliability of ICVs in the intelligent well. In this paper, the two‐dimensional axisymmetric assembly of the radial metal seal and the closure member is abstracted as a combination of interference fit model and cantilever beam model. Based on that, the related theoretical model, between the radial metal seal's contact stress and its independent variables, has been derived. Next, numerically simulations of contact stress between the radial metal seal and the closure member for different independent variables are conducted by the finite element method (FEM) to validate the theoretical model. It is found that the mean absolute value of relative error between the numerical and theoretical results of the contact stress is approximately 10%. Additionally, the structural parameters of the radial metal seal are proposed with the absolute value of relative error <10%. Furthermore, the value of the contact stress based on the cantilever beam model can be used to calculate an approximation theoretical solution. In summary, the proposed theoretical model provides a foundation for the design, improvement, and selection of radial metal seal under the known oilfield conditions.

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The benefits of an asymmetric tri-stable energy harvester in low-frequency rotational motion

Cited by 43 publications

References 32 publications

Dynamics of symmetric and asymmetric potential well-based piezoelectric harvesters: A comprehensive review

Dynamics of symmetric and asymmetric potential well-based piezoelectric harvesters: A comprehensive review

Voltage Regulation and Power Management for Wireless Flow Sensor Node Self-Powered by Energy Harvester With Enhanced Reliability

Contact mechanical behaviors of radial metal seal for the interval control valve in intelligent well: Modeling and theoretical study

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