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摘要
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This study introduces a groundbreaking slap-type Vibration Energy Harvesting (VEH)
system, leveraging a rotating shaft with magnets to induce vibrations in an adjacent elastic steel sheet
through magnetic repulsion. This unique design causes the elastic sheet to vibrate, initiating the
oscillation of a seesaw-type rigid plate lever. The lever then slaps a piezoelectric patch (PZT) at the
elastic steel sheet’s root, converting vibrations into electrical energy. Notably, the design enables
the PZT to withstand deformation and flapping forces simultaneously, enhancing power conversion
efficiency. The driving force for the rotating shaft is harnessed from the downstream flow field
generated by moving objects like rotorcraft, fixed-wing aircraft, motorcycles, and bicycles. Beyond
conventional vibration energy harvesting, this design taps into additional electric energy generated
by the PZT’s slapping force. This study includes mathematical modeling of nonlinear elastic beams,
utilizing the Method of Multiple Scales (MOMS) for in-depth vibration mode analysis. Experimental
validation ensures the convergence of theory and practice, confirming the feasibility and superior
voltage generation efficiency of this slap-type VEH concept compared to traditional VEH systems. |
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