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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 蘇偉儁(Wei-Jiun Su) | |
| dc.contributor.author | Zih-Yang Yen | en |
| dc.contributor.author | 顏子洋 | zh_TW |
| dc.date.accessioned | 2022-11-23T09:25:53Z | - |
| dc.date.available | 2021-08-20 | |
| dc.date.available | 2022-11-23T09:25:53Z | - |
| dc.date.copyright | 2021-08-20 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-08-11 | |
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Inman, 'Piezoelectric energy harvesting from macro-fiber composites with an application to morphing-wing aircrafts,' in Proceedings of the 19th International Conference on Adaptive Structures and Technologies, 2008: Citeseer, pp. 6-9. [44] P. M. Gerhart, A. L. Gerhart, and J. I. Hochstein, Fundamentals of fluid mechanics. Wiley, 2020. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/80096 | - |
| dc.description.abstract | 傳統的壓電能量採集器為懸臂梁結構，由於其頻寬過窄且振動方向性單一，在應用上受到諸多限制。因此本研究提出一具有雙方向振動自由度的框形梁壓電能量採集裝置以改善以上限制。藉由改變其激振角度，使其在同一個激振環境下產生兩模態耦合的現象，從而拓增頻寬的大小。另外，利用風力作為激振外力源，藉由框形樑上的圓柱形受風結構來產生渦流，並受益於其特殊的鎖定現象，探討其對於框形樑在雙模態耦合與單一模態時的表現差異。本研究使用Euler-Bernoulli梁理論與壓電本構方程式作為基礎，推導出框形梁的力電耦合振動方程式，並藉由基底激振實驗擬合出系統之阻尼比與壓電片之壓電常數。透過瑞利振盪器數學模型模擬出渦流對採集器產生的動態響應，推導出完整的力電耦合聯立方程式。藉由改變輔梁長度與激振角度，來觀察其對採集器的輸出電壓與採集能力的影響。結果顯示，在渦流誘發激振環境下，當角度從0° 開始變大時，兩模態逐漸發生耦合的現象，使其有效共振風速區間的範圍對比只有單一模態時明顯提升，尤以輔梁長度40 mm時更為明顯。在激振角度同為45° 的情況下，輔樑長度40 mm較輔梁長度30 mm時的有效共振風速區間增加大約25 %。在輔樑長度40 mm下，激振角度45° 對比角度0° 時，採集範圍提升了53.8%；對比角度90° 時，則提升了33.3%。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-23T09:25:53Z (GMT). No. of bitstreams: 1 U0001-0907202100193900.pdf: 8040199 bytes, checksum: f2f04a116da1a6d3316d574d2cfcee51 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 口試委員會審定書 # 誌謝 i 摘要 ii ABSTRACT iii 目錄 iv 圖目錄 vii 表目錄 xi 符號表 xiii Chapter 1 序論 1 1.1 前言 1 1.2 文獻回顧 2 1.3 研究動機與方法 10 1.4 論文架構 11 Chapter 2 壓電能量採集理論 12 2.1 壓電效應 12 2.2 壓電本構方程式 14 Chapter 3 框形梁振動之雙模態耦合採集器模型 17 3.1 採集器之數學模型 18 3.1.1 振動數學模型 18 3.1.2 模態分析 24 3.1.3 正交條件 28 3.1.4 運動方程式 29 3.2 採集器之電路模型 30 3.3 介面電路 33 Chapter 4 渦流誘發振動模型 35 4.1 空氣力學模型相關參數 35 4.1.1 雷諾數(Reynolds number) 35 4.1.2 司特勞克數(Strouhal number) 36 4.1.3 渦流剝離頻率(Vortex shedding frequency) 37 4.2 渦流誘發振動 38 4.3 渦流升力模型 42 4.4 結合渦流誘發振動之多角度採集器模型 44 4.4.1 不同之激振外力源 44 4.4.2 雙模態耦合 46 Chapter 5 實驗環境 48 5.1 實驗設計 48 5.2 實驗設備 53 5.3 實驗流程 58 Chapter 6 結果驗證與討論 60 6.1 壓電材料之簡化參數 60 6.2 線性框形梁驗證 63 6.2.1 基底激振之驗證 65 6.2.2 雙模態耦合之驗證 70 6.3 渦流誘發振動模型驗證 76 6.3.1 渦流誘發振動之驗證 77 6.3.2 雙模態耦合之模擬 82 Chapter 7 結論與未來展望 93 7.1 結論 93 7.2 未來展望 94 參考文獻 95 附錄A 框形梁數學模型之邊界條件與連續條件 99 | |
| dc.language.iso | zh-TW | |
| dc.subject | 雙模態耦合 | zh_TW |
| dc.subject | 壓電能量採集器 | zh_TW |
| dc.subject | 雙方向 | zh_TW |
| dc.subject | 渦流誘發激振 | zh_TW |
| dc.subject | 可變激振角度 | zh_TW |
| dc.subject | vortex-induced vibration | en |
| dc.subject | variable angles of excitation | en |
| dc.subject | Piezoelectric energy harvester | en |
| dc.subject | dual-modal coupled | en |
| dc.subject | bi-directional | en |
| dc.title | 不同激振角度下雙模態耦合渦流誘發振動能量採集器之設計及分析 | zh_TW |
| dc.title | Design and Analysis of a Dual-modal Coupled Vortex-induced Piezoelectric Energy Harvester at Various Angles of Excitation | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 黃育熙(Hsin-Tsai Liu),王建凱(Chih-Yang Tseng) | |
| dc.subject.keyword | 壓電能量採集器,雙方向,渦流誘發激振,可變激振角度,雙模態耦合, | zh_TW |
| dc.subject.keyword | Piezoelectric energy harvester,bi-directional,vortex-induced vibration,variable angles of excitation,dual-modal coupled, | en |
| dc.relation.page | 99 | |
| dc.identifier.doi | 10.6342/NTU202101358 | |
| dc.rights.note | 同意授權(全球公開) | |
| dc.date.accepted | 2021-08-11 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| 顯示於系所單位： | 機械工程學系 | |
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| U0001-0907202100193900.pdf | 7.85 MB | Adobe PDF | 檢視/開啟 |
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