Abstract
We propose a spiral-shaped piezoelectric bimorph power harvester operating with coupled flexural and extensional vibration modes for applications to low frequency energy sources. A theoretical analysis is performed and the computational results show that the spiral structure has relatively low operating frequency compared to beam power harvesters of the same size. It is found that to optimize the performance of a piezoelectric spiral-shaped harvester careful design is needed.
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Hu, Y., Hu, H. & Yang, J. A low frequency piezoelectric power harvester using a spiral-shaped bimorph. SCI CHINA SER G 49, 649–659 (2006). https://doi.org/10.1007/s11433-006-2021-z
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DOI: https://doi.org/10.1007/s11433-006-2021-z