A comprehensive theoretical model for the centrifugal effect of nonlinear beam-type piezoelectrical energy harvesters in rotational motions

Mei, Xutao; Du, Houfan; Zhou, Shengxi

doi:10.1016/j.ymssp.2023.110106

Cited by 12 publications

(2 citation statements)

References 35 publications

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“…The maximum electric energy output increases and then decreases with the dimensionless resistance β and a peak power is obtained. As the centrifugal force increases, the component in the direction of gravity will offset part of the gravity excitation to reduce the vibration amplitude, which results in a reduction in voltage and maximum electric energy output [44]. It should also be noted that the maximum output electrical energy decreases as the gear vibration acceleration increases.…”

Section: Input Mechanical Energy and Output Electrical Energymentioning

confidence: 99%

Modelling and characterisation of a magnetically coupled piezoelectric beam for energy harvesting gear meshing motion

Xiao,

Guan,

Zhang

et al. 2024

Smart Mater. Struct.

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Gear transmission systems are crucial components for transmitting power and motion in a host of engineering applications. Recently, the potential to embed sensors into transmission components has attracted significant attention for accurate condition monitoring of system health. As a result, embedded sensors must operate in a safe and stable manner, whilst being able to provide a continuous power-supply and ensure operational autonomy. In this work, a magnetically coupled beam-type piezoelectric energy harvester is developed for energy harvesting of rotational centrifugal forces and individual gear meshing excitation events. A new coupled electromechanical dynamic model is developed to explain the working principle and response of the harvester when excited by a combination of gear meshing excitation events, a centrifugal force, and a magnetic force. Since gear meshing events are observed to lead to an increased hardening nonlinearity of the energy harvester, and a decrease in power output, a novel variable-section cantilever structure was developed. Our detailed theoretical analysis demonstrates that the novel variable stiffness structure improves both the power output and bandwidth, with excellent agreement with experimental measurements. This work provides new theoretical insights into the application of magnetically coupled piezoelectric energy harvesters for self-powered sensing systems for critical gear transmission systems.

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Section: Input Mechanical Energy and Output Electrical Energymentioning

confidence: 99%

Modelling and characterisation of a magnetically coupled piezoelectric beam for energy harvesting gear meshing motion

Xiao,

Guan,

Zhang

et al. 2024

Smart Mater. Struct.

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show abstract

“…Rui et al [23] conducted a PEH installed on the car spokes, which could generate electricity by wheels' rotating for low-consumption devices. A beam-type PEH working in rotational motions was presented by Mei et al [24] to investigate the influence of the centrifugal force. They carried out theoretical analysis and experimental verification, and the results showed that various installation angles would change the centrifugal effect, which led to significant difference of the energy harvesting effect.…”

Section: Introductionmentioning

confidence: 99%

A piezoelectric buckling beam-type bistable energy harvester under rotational excitations

Yang

Zhou

2023

J. Phys. D: Appl. Phys.

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This paper proposes a novel piezoelectric buckling beam-type bistable energy harvester (PBBEH), which aims to efficiently harvest energy from rotational motions. The designed PBBEH is most made up of a piezoelectric buckling beam and a rotational disk which is used to provide low-speed rotational motions. A lumped parameter model is used for numerical analysis and the energy harvesting features of the PBBEH are analyzed. More importantly, experiments indicate that the PBBEH has excellent energy harvesting performance in the frequency range of 1~9 Hz, and experimental results indicate that the presented PBBEH has the output power of 28 μW. Additionally, the PBBEH has obvious nonlinear, broadband dynamics characteristics. Both experimental and numerical results show that the output power curve has the tendency to increase and then decrease. Overall, in this paper, a good performance of this proposed harvester in ultra-low frequency rotational motions is found, and it provides a possible design for self-powered wireless sensors used for structural heath monitoring in the wind turbine, the automobile wheel and other rotational machines.

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Dynamic modeling and resonant analysis of rotating internally connected laminated piezoelectric beams

Ma,

Chen,

et al. 2023

Acta Mech

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A comprehensive theoretical model for the centrifugal effect of nonlinear beam-type piezoelectrical energy harvesters in rotational motions

Cited by 12 publications

References 35 publications

Modelling and characterisation of a magnetically coupled piezoelectric beam for energy harvesting gear meshing motion

Modelling and characterisation of a magnetically coupled piezoelectric beam for energy harvesting gear meshing motion

A piezoelectric buckling beam-type bistable energy harvester under rotational excitations

Dynamic modeling and resonant analysis of rotating internally connected laminated piezoelectric beams

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