ENERGY HARVESTING AND OPTIMIZATION USING ACTIVE RESONANCE FITTING | ||||
| Journal of the Egyptian Society of Tribology | ||||
| Volume 21, Issue 3, July 2024, Page 74-86 PDF (695.86 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jest.2024.366468 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mohamed Hedaya* 1; Mohamed Elhadidi1; Taher Elyazied1; Mahmoud Z. Ibrahim* 1, 2, 3 | ||||
| 1Department of Design and Production Engineering, Faculty of Engineering, Ain Shams University, 11517 Cairo, Egypt | ||||
| 2Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia | ||||
| 3Centre of Advanced Manufacturing and Materials Processing (AMMP), Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia | ||||
| Abstract | ||||
| Energy harvesting is an emerging topic recently. This harvested energy is used to operate wireless sensors for different industrial monitoring and automation. To maximize the harvested energy in spinning systems, the harvester should vibrate at resonance for different spinning frequencies which can be achieved by active fitting. In this research, a novel methodology was developed by actively customizing the length of vibrating element beam to manipulate its natural frequency according to the spinning frequency. Different models were investigated numerically and experimentally to verify the proposed methodology. COMSOL Multiphysics software V5.1 was used to develop the numerical model, then and tip deformation and voltage difference results were benchmarked. The numerical model was verified experimentally by attaching a piezoelectric MIDE PPA 1021 which its vibrating length was varied by changing the supporting length from 0 mm to 12 mm to a spinning object having variable frequency from 0-200 Hz. It is found that the MIDE PPA 1021 beam vibrated at its resonance throughout the specified spinning frequencies. The proposed harvester can be applied in battery-free sensors being used in automotives, wind-mills blades, and rotating machinery. | ||||
| Keywords | ||||
| Energy harvesting; piezoelectric; resonance; optimization | ||||
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