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Journal Article
Analysis of Vibration-Energy-Harvesting Devices based on a Piezoelectric Single Crystal Beam
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- Issue Date
- 2011-03
- Citation
- Journal of the Korean Physical Society, v.58, no.3, pp.645-649
- ISSN
- 0374-4884
- Publisher
- 한국물리학회
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, we present the results and analyses of vibration-energy-harvesting performances based on single crystal beam. A novel piezoelectric beam cantilever structure is used to measure the generated AC voltage during the vibration. The energy-harvesting capability of piezoelectric single crystal was measured, and the prototype based on a unimorph cantilever structure with a proof mass which were designend to operate at a vibration frequency of about 60 Hz. These tests show that several AC voltages and sub-mW power were achieved. Using the measured mechanical damping ratio and electro-mechanical coupling coefficient of the device, we calculated the output power and compared it with the above measured results.
- KSP Keywords
- 60 Hz, AC voltage, Cantilever structure, Damping ratio, Electro-mechanical coupling coefficient, Mechanical damping, Output power, Piezoelectric single crystal, Single crystal beam, Unimorph cantilever, Vibration frequency