Bio-inspired structures for energy harvesting self-powered sensing and smart monitoring

Mechanical Systems and Signal Processing, Journal Year: 2025, Volume and Issue: 228, P. 112459 - 112459

Published: Feb. 11, 2025

Language: Английский

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A hybrid energy harvester with bistable mechanism based on flapping-wing structure

Communications in Nonlinear Science and Numerical Simulation, Journal Year: 2025, Volume and Issue: unknown, P. 108705 - 108705

Published: Feb. 1, 2025

Language: Английский

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Vibration hybrid energy harvester using magnetic levitation based on flapping-wing motion mechanism

Journal of Magnetism and Magnetic Materials, Journal Year: 2024, Volume and Issue: 593, P. 171834 - 171834

Published: Feb. 10, 2024

Language: Английский

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Theoretical Analysis and Experimental Verification of 2-DOF Linkage Piezoelectric Energy Harvesting

Actuators, Journal Year: 2025, Volume and Issue: 14(2), P. 82 - 82

Published: Feb. 9, 2025

In the process of energy harvesting, vibration harvesting still has several disadvantages, including a high-threshold excitation and narrow working bandwidth. Therefore, 2-degrees-of-freedom piezoelectric harvester is proposed. By introducing nonlinear magnetic force to system, bandwidth energy-harvesting efficiency three magnetically coupled cantilever beams can be effectively improved. this paper, mathematical model consisting electrically beam systems established, governing equations electric coupling are solved numerically verified experimentally. The dynamic characteristics under different excitations frequencies studied. experiment shows that increased by controlling distance between pairs circular magnets changing frequency induce resonance. Thus, self-power requirement micro-power devices realized. Overall, study provides promising solution for improving performance harvesters offers theoretical insights designing vibrating harvesters.

Language: Английский

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Improvement of the Non-periodic Energy Harvesting Behavior of a Non-ideal Magnetic Levitation System Utilizing Internal Resonance

Journal of Vibration Engineering & Technologies, Journal Year: 2024, Volume and Issue: unknown

Published: May 9, 2024

Language: Английский

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A piezoelectric-electromagnetic hybrid energy harvester for rotational motion driven by magnetic repulsion

Smart Materials and Structures, Journal Year: 2024, Volume and Issue: 33(9), P. 095012 - 095012

Published: July 28, 2024

Abstract Harvesting energy from rotational motion is an efficient and widely used technology that provides power support for various electronic devices systems by converting mechanical kinetic into electrical energy. This harvesting method shows great potential advantages in industrial automation, transportation, wind generation, smart homes. study proposes a piezoelectric-electromagnetic hybrid harvester (HEH) driven magnetic repulsion. HEH comprises of two parts: piezoelectric (PEH) electromagnetic (EMH). utilizes the drive reciprocating to enhance collection efficiency PEH EMH. Additionally, adding effect ends bimorph sheets, spectrum expanded. Its parameters are analyzed using theoretical analysis simulation, experimental testbed established explore influence output performance. The results indicate reaches its maximum when there 2 circular magnets on rotor, gap distance 15 mm, mass blocks at end sheet. EMH outputs 173.36 V 4.81 V, respectively. 53.45 mW. density can reach 6.818 mW cm −3 . Compared with EMH, performance improved 46.94% 174.95%, When rotation speed 500 r min −1 , effortlessly light up 80 LEDs. all demonstrate low-power sensors.

Language: Английский

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Effect of the suspended block’s weight on the nonlinear dynamics of a non-ideal magnetic levitation model connected to an energy harvester

International Journal of Non-Linear Mechanics, Journal Year: 2024, Volume and Issue: unknown, P. 104974 - 104974

Published: Nov. 1, 2024

Language: Английский

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A piezoelectric-electromagnetic hybrid energy harvester for low-frequency impact vibration

Journal of Magnetism and Magnetic Materials, Journal Year: 2024, Volume and Issue: unknown, P. 172761 - 172761

Published: Dec. 1, 2024

Language: Английский

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Enhancing energy conversion efficiency of electromagnetic repulsion mechanisms through resistance coefficient optimization model

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 30, 2024

This study investigates methods to enhance the energy conversion efficiency of electromagnetic repulsion mechanisms. Initially, a model considering influence resistance coefficient on mechanisms is developed based principles. Sensitivity analysis conducted elucidate its role in efficiency. Subsequently, finite element techniques are applied simulate across varying coefficients determine optimal value. Experimental validation theoretical models and numerical simulation results then performed, with precise adjustments made during experiments, accurately measured under diverse conditions. The indicate significant improvement following optimization. Numerical simulations reveal that setting 0.85Ω yields efficiency, 23.5% enhancement over pre-optimized state. corroborates these findings, demonstrating an average 22% increase compared unoptimized Comparative related studies demonstrates maximum reaching 25.0%. underscores effectiveness superiority proposed optimization model. discovery offers new avenues for designing enhancing presents opportunities improving performance associated applications.

Language: Английский

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A bird wing-inspired low-frequency double pendulum piezoelectric energy harvester with stoppers-assisted bending vibration

Mechanical Systems and Signal Processing, Journal Year: 2024, Volume and Issue: 224, P. 112159 - 112159

Published: Dec. 4, 2024

Language: Английский

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