Piezoelectric generator based on torsional modes for power harvesting from angular vibrations |
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| Authors: | Chen Zi-guang Hu Yuan-tai Yang Jia-shi |
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| Affiliation: | Institute of Mechanics and Sensing Technology, School of Civil Engineering and Architecture, Central South University, Changsha 410083, P. R. China;Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;Department of Engineering Mechanics, University of Nebraska, Lincoln NE 68588-0526, USA |
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| Abstract: | ![]()
Torsional vibration of a circular piezoelectric shell of polarized ceramics mounted on a rotationally vibrating base is analyzed. The shell is properly electroded and connected to a circuit such that an electric output is generated. The structure analyzed represents a piezoelectric generator for converting mechanical energy from angular vibrations to electrical energy. Analytical expressions and numerical results for the output voltage, current, power, efficiency and power density are given. |
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| Keywords: | piezoelectric generator torsional vibration power harvesting efficiency |
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