An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory
In this paper, an analytical solution for a clamped-edge bimorph disk-type piezoelectric transformer with Kirchhoff thin plate theory is proposed. The electromechanical equations for transient motions are first derived, and coupled expressions for mechanical response and voltage output are obtained....
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/6/2237 |
| _version_ | 1797442408488632320 |
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| author | Shao-En Chen Hadi Gunawan Chia-Che Wu |
| author_facet | Shao-En Chen Hadi Gunawan Chia-Che Wu |
| author_sort | Shao-En Chen |
| collection | DOAJ |
| description | In this paper, an analytical solution for a clamped-edge bimorph disk-type piezoelectric transformer with Kirchhoff thin plate theory is proposed. The electromechanical equations for transient motions are first derived, and coupled expressions for mechanical response and voltage output are obtained. For the case of excitation around the first resonant frequency, the resulting equations are further simplified. There are analytical solutions for a mechanical response, voltage, current, and power outputs. According to the analytical model, the output voltage is affected by the inner radius of the input and output electrodes, the radius of the piezoelectric transformer (PT), and the thickness ratio between the lead zirconate titanate (PZT) layer and the substrate. When the inner radius of the input electrode approaches zero (electrode becomes circular shape), it achieves maximum output voltage at the first resonance frequency excitation. On the contrary, when the inner radius of the output electrode approaches zero, the output voltage reaches its minimum value. Voltage ratios remain constant as the disk radius changes, and the first resonance frequency is inversely proportional to the square of the disk radius. The voltage ratio is fixed even with the miniaturization of the PT. |
| first_indexed | 2024-03-09T12:41:25Z |
| format | Article |
| id | doaj.art-f82de0490e6743cdbf6151d4d81d520b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T12:41:25Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f82de0490e6743cdbf6151d4d81d520b2023-11-30T22:18:08ZengMDPI AGSensors1424-82202022-03-01226223710.3390/s22062237An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate TheoryShao-En Chen0Hadi Gunawan1Chia-Che Wu2Department of Mechanical Engineering, National Chung Hsing University, Taichung 40227, TaiwanDepartment of Mechanical Engineering, National Chung Hsing University, Taichung 40227, TaiwanDepartment of Mechanical Engineering, National Chung Hsing University, Taichung 40227, TaiwanIn this paper, an analytical solution for a clamped-edge bimorph disk-type piezoelectric transformer with Kirchhoff thin plate theory is proposed. The electromechanical equations for transient motions are first derived, and coupled expressions for mechanical response and voltage output are obtained. For the case of excitation around the first resonant frequency, the resulting equations are further simplified. There are analytical solutions for a mechanical response, voltage, current, and power outputs. According to the analytical model, the output voltage is affected by the inner radius of the input and output electrodes, the radius of the piezoelectric transformer (PT), and the thickness ratio between the lead zirconate titanate (PZT) layer and the substrate. When the inner radius of the input electrode approaches zero (electrode becomes circular shape), it achieves maximum output voltage at the first resonance frequency excitation. On the contrary, when the inner radius of the output electrode approaches zero, the output voltage reaches its minimum value. Voltage ratios remain constant as the disk radius changes, and the first resonance frequency is inversely proportional to the square of the disk radius. The voltage ratio is fixed even with the miniaturization of the PT.https://www.mdpi.com/1424-8220/22/6/2237piezoelectric transformerKirchhoff thin plate theoryclamped-edge bimorph disk |
| spellingShingle | Shao-En Chen Hadi Gunawan Chia-Che Wu An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory Sensors piezoelectric transformer Kirchhoff thin plate theory clamped-edge bimorph disk |
| title | An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory |
| title_full | An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory |
| title_fullStr | An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory |
| title_full_unstemmed | An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory |
| title_short | An Electromechanical Model for Clamped-Edge Bimorph Disk Type Piezoelectric Transformer Utilizing Kirchhoff Thin Plate Theory |
| title_sort | electromechanical model for clamped edge bimorph disk type piezoelectric transformer utilizing kirchhoff thin plate theory |
| topic | piezoelectric transformer Kirchhoff thin plate theory clamped-edge bimorph disk |
| url | https://www.mdpi.com/1424-8220/22/6/2237 |
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