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Design Procedure and Experimental Verification of a Broadband Quad-Stable 2-DOF Vibration Energy Harvester

1
Department of Mechatronics and Robotics Engineering, Egypt- Japan University of Science and Technology (E-JUST), Alexandria 21934, Egypt
2
Institute of Industrial Science, The University of Tokyo, 4 -6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
3
On leave from Department of Production Engineering and Mechanical Design, Tanta University, Tanta 31511, Egypt
4
On leave from Department of Mechanical Engineering, Assiut University, Assiut 271516, Egypt
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(13), 2893; https://doi.org/10.3390/s19132893
Received: 7 June 2019 / Revised: 26 June 2019 / Accepted: 27 June 2019 / Published: 29 June 2019
(This article belongs to the Section Physical Sensors)
Vibration-based energy harvesters brought the idea of self-powered sensors to reality in the past few years. Many strategies to improve the performance of linear vibration energy harvesters that collect energy over a limited bandwidth have been proposed. In this paper, a bi-stable two degrees of freedom (2-DOF) cut-out vibration energy harvester employing a pair of permanent magnets is designed through a proposed design methodology. Based on this methodology, the nonlinear harvesters can be optimally designed such that the bandwidth can be widened for a targeted output voltage. The proper selection of the harvester parameters as well as the gap distances between the tip and the fixed magnets are the bases of this methodology. The mathematical modeling of the proposed harvester and the formula for the potential energy between the tip and the fixed magnets are presented. Additionally, to enhance the performance of the bi-stable energy harvester (BEH), a quad-stable energy harvester (QEH) was configured by adding more fixed magnets. Experiments were performed to validate the numerical simulations and the results showed that, the simulation and experimental results are consistent. The results indicate that, the QEH covers a wider bandwidth than the BEH and based on a figure of merit the QEH shows the best performance among many harvesters presented in the literature. View Full-Text
Keywords: 2-DOF; multi-stability; nonlinear energy harvesting; piezoelectric; magnetic interaction 2-DOF; multi-stability; nonlinear energy harvesting; piezoelectric; magnetic interaction
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MDPI and ACS Style

Zayed, A.A.A.; Assal, S.F.M.; Nakano, K.; Kaizuka, T.; Fath El-Bab, A.M.R. Design Procedure and Experimental Verification of a Broadband Quad-Stable 2-DOF Vibration Energy Harvester. Sensors 2019, 19, 2893. https://doi.org/10.3390/s19132893

AMA Style

Zayed AAA, Assal SFM, Nakano K, Kaizuka T, Fath El-Bab AMR. Design Procedure and Experimental Verification of a Broadband Quad-Stable 2-DOF Vibration Energy Harvester. Sensors. 2019; 19(13):2893. https://doi.org/10.3390/s19132893

Chicago/Turabian Style

Zayed, Abdelhameed A.A., Samy F.M. Assal, Kimihiko Nakano, Tsutomu Kaizuka, and Ahmed M.R. Fath El-Bab. 2019. "Design Procedure and Experimental Verification of a Broadband Quad-Stable 2-DOF Vibration Energy Harvester" Sensors 19, no. 13: 2893. https://doi.org/10.3390/s19132893

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