Shuyun WANG, Jieya DU, Zheren HUANG, Junwu KAN, Chaohui CHAI, Zhonghua ZHANG. Magnetically-coupled tunable piezoelectric vibration energy harvester[J]. Optics and Precision Engineering, 2024, 32(1): 73
- Optics and Precision Engineering
- Vol. 32, Issue 1, 73 (2024)
Fig. 1. Structure and working principle of piezoelectric vibration energy harvest（PVEH）
Fig. 2. Energetics model of piezoelectric vibration energy harvest（PVEH）
Fig. 3. Relation curves between displacement transmissibility and excitation frequency at different longitudinal mass
Fig. 4. Relation curves between displacement transmissibility and excitation frequency at different transversal mass
Fig. 5. Magnetic potential cloud map of ring magnet
Fig. 6. Relation curves between radial magnetic force and radial distance with different diameters of magnet
Fig. 7. Relation curves between axial magnetic force andaxial distance with different diameters of magnet
Fig. 8. Experimental prototype of piezoelectric vibration energy harvest
Fig. 9. Piezoelectric vibration energy harvest test system
Fig. 10. Relation curves between output voltage and excitation frequency with different longitudinal mass
Fig. 11. Relation curves between output power and excitation frequency with different longitudinal mass
Fig. 12. Relation curves between output voltage and excitation frequency with different transversal mass
Fig. 13. Relation curves between output power and excitation frequency with different transversal mass
Fig. 14. Relation curves between output voltage and excitation frequency with different transversal magnet spacings
Fig. 15. Relation curves between output power and excitation frequency with different transversal magnet spacings
Fig. 16. Relation curves between output voltage and excitation frequency with different longitudinal magnet spacings
Fig. 17. Relation curves between output power and excitation frequency with different longitudinal magnet spacings
Fig. 18. Relation curves between output voltage and excitation frequency with different vertical magnet spacings
Fig. 19. Relation curves between output power and excitation frequency with different vertical magnet spacings
Fig. 20. Relation curves between output power and load resistance at different excitation frequencies
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Table 1. Simulation structure parameters of piezoelectric vibration energy harvest
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Table 2. Structural dimension parameters of PVEH
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Table 3. Performance comparison of PVEHs
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