Ultra-low wide bandwidth vibrational energy harvesting using a statically balanced compliant mechanism

Liang, Haitong; Hao, Guangbo; Olszewski, Zbigniew; Pakrashi, Vikram

doi:10.1016/j.ijmecsci.2022.107130

Cited by 38 publications

(19 citation statements)

References 66 publications

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“…Load f peak (Hz) f initial (Hz) [48] 29.4 N 2.67 4.0 [59] 5.0 kg 2.0 4.0 [60] 5.42 N -5.5 [61] 0.11 kg 6.5 6.7 [62] 82.0 kg 3.0 4.3 This work 51.0 N 2.01 2.9…”

Section: Literaturementioning

confidence: 92%

“…The experimental results showed that the QZS isolator's f peak and f initial were 2 Hz and 4 Hz, respectively, when the load was 5 kg. Liang et al [60] proposed a statically balanced compliant mechanism consisting of a linear component with positive stiffness (two parallelograms in parallel) and a nonlinear component with negative stiffness (two sets of post-buckled fixed-guided compliant beams in parallel) composition. The f initial was 5.5 Hz when the load was 5.42 N. A W-shaped compliant mechanism with direct QZS was proposed by Xu et al [61].…”

Section: Dynamic Experimentsmentioning

confidence: 99%

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Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

et al. 2023

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This paper proposes a quasi-zero stiffness (QZS) isolator based on an inclined trapezoidal beam to explore its advantages in low-frequency passive vibration isolation. The nonlinear stiffness of the inclined trapezoidal beam due to the buckling effect is investigated through finite element simulation, and a linear positive stiffness spring is connected in parallel to form a QZS isolator with high-static and low-dynamic stiffness performance. The natural frequency of the isolator in the QZS region is simulated and analyzed, and the dynamic response of the QZS isolator under different damping ratios, excitation and load conditions is explored. The prototype of the QZS isolator was manufactured, and a static compression experiment was conducted to obtain its nonlinear stiffness. The dynamic experiment results verify the correctness of the simulation conclusions. The simulation and experimental data demonstrate that the QZS isolator has the characteristics of lower initial isolation frequency compared with the equivalent linear isolator. The proposed QZS isolator has an initial isolation frequency of 2.91 Hz and achieves a 90% isolation efficiency at 7.02 Hz. The proposed QZS isolator has great application prospects and can provide a reference for optimizing low-frequency or ultra-low-frequency isolators.

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“…Load f peak (Hz) f initial (Hz) [48] 29.4 N 2.67 4.0 [59] 5.0 kg 2.0 4.0 [60] 5.42 N -5.5 [61] 0.11 kg 6.5 6.7 [62] 82.0 kg 3.0 4.3 This work 51.0 N 2.01 2.9…”

Section: Literaturementioning

confidence: 92%

Section: Dynamic Experimentsmentioning

confidence: 99%

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

et al. 2023

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“…Two examples aimed at demonstrating the capability of nonlinear solutions to provide some advantages if employed in vibrational energy harvesters are given in [16,17]. Spring hardening non-linearities obtained by atypical stress distributions in the structure to improve the performance of an electromagnetic vibration energy harvester have been investigated in [16].…”

Section: Non-linear Solutions For Vibrational Energy Harvestingmentioning

confidence: 99%

“…A statically balanced compliant mechanism for applications in piezoelectric EH, based on the concept of stiffness compensation between a linear component with positivestiffness and a non-linear component has been proposed in [17]. The non-linear part of the system consists of two sets of post-buckled fixed-guided compliant beams in parallel showing negative-stiffness.…”

Section: Non-linear Solutions For Vibrational Energy Harvestingmentioning

confidence: 99%

A comparison of linear and non-linear strategies for energy harvesting from mechanical vibrations

et al. 2023

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Energy Harvesting strategies coupled with the improvement of electronics and the progressive reduction of power requirements have been widely recognized as fundamental to enable self-powered (or autonomous) devices. Among all the potential energy sources, kinetic energy stemming from mechanical vibrations has been particularly extensively investigated for EH purposes due to its characteristics of heterogeneity and ubiquity. To exploit such energy sources, a suitable coupling mechanism to convert vibrations into electric charge is required; it must take into account the wide frequency bandwidth of mechanical vibrations as encountered in everyday scenarios. This review offers an overview of linear vs. non-linear strategies for EH, with a specific focus on different approaches to implement efficient coupling mechanisms; the performances of the specific solutions covered in this work are discussed.

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“…To convert the ambient vibration energy into high electrical energy that can be applied in practice, several researchers have made various attempts, and the vibration energy harvesting devices reported so far have made great progress in low-frequency vibration environments below 100 Hz. Liang et al proposed a device that utilizes a static-compliant equilibrium mechanism, which can effectively excavate energy at 6 Hz-12 Hz [24]. Zhang et al reported a novel aerodynamic energy harvesting system that has an optimal operating band of 31 Hz-55 Hz [25].…”

Section: Introductionmentioning

confidence: 99%

A piezoelectric–electromagnetic hybrid energy harvester inspired by flapping motion of the Diptera insect

Fang,

Fan,

et al. 2023

Smart Mater. Struct.

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Low-frequency vibration is widespread in nature. Vibration energy harvesting is considered to be a reliable and sustainable method to achieve continuous power supply. It is a feasible method to design an energy harvesting system of the bio-inspired mechanical structure to improve the efficiency of energy harvesting. A hybrid energy harvester piezoelectric–electromagnetic that mimics the flapping wing motion of the Diptera insect. The biomimetic energy harvesting device consists of two piezoelectric cantilever beams structure with the mass block installed, which mimics the flapping movement mechanism of the Diptera insect. The intermediate part of this harvester inspired by the insect skeleton and muscle structure of the Diptera insect is composed of magnetic levitation coupled repulsion structure, which is easily affected by vibration and changes greatly, to realize electromagnetic energy harvesting. The ‘click’ mechanism of the Diptera insect is constructed by storing energy in springs to improve the performance of energy harvesting devices. The hybrid energy harvesting device realizes piezoelectric–electromagnetic energy harvesting with multiple energy outputs at one excitation input. A dynamic model of the proposed energy harvester is constructed based on the electromechanical coupling characteristics. The modal analysis and structure optimization of this device is realized by the finite element method (FEM). The FEM simulation and experimental results can verify that under the low-frequency excitation of 3 Hz, the maximum output power of the designed harvester reaches 12.33 mW in the low-frequency environment.

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Ultra-low wide bandwidth vibrational energy harvesting using a statically balanced compliant mechanism

Cited by 38 publications

References 66 publications

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

A comparison of linear and non-linear strategies for energy harvesting from mechanical vibrations

A piezoelectric–electromagnetic hybrid energy harvester inspired by flapping motion of the Diptera insect

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