Investigation of various cantilever configurations for piezoelectric energy harvesting under rotational motion

T. T. Hsieh; S. A. Chen; Y. C. Shu

doi:10.1117/12.2515393

21 March 2019 Investigation of various cantilever configurations for piezoelectric energy harvesting under rotational motion

T. T. Hsieh, S. A. Chen, Y. C. Shu

Author Affiliations +

Proceedings Volume 10967, Active and Passive Smart Structures and Integrated Systems XIII; 1096719 (2019) https://doi.org/10.1117/12.2515393
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

The article investigates various cantilever configurations for energy harvesting from rotational motion. A piezoelectric cantilever beam is mounted radially on a rotating body with different configurations. A harvester of type A (type B) refers to an outward (inward) configuration of beam with the direction of the transverse vibration perpendicular to the rotational axis. On the other hand, a rotary harvester of the type C is an outward beam with the transverse vibration in parallel to the rotational axis. A unified approach based on the Hamiltonian principle is employed and the methodology for deriving the formulations is based on the distributed parameter method. The result shows that both the type A and type C enjoy the feature of passive self-tuning of resonance. But the type C exhibits better ability in tuning than the type A. In addition, the type B shows significant harvested power at the cost of loss of tuning ability

Citation Download Citation

T. T. Hsieh, S. A. Chen, and Y. C. Shu "Investigation of various cantilever configurations for piezoelectric energy harvesting under rotational motion", Proc. SPIE 10967, Active and Passive Smart Structures and Integrated Systems XIII, 1096719 (21 March 2019); https://doi.org/10.1117/12.2515393

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