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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 舒貽忠(Yi-Chung Shu) | |
dc.contributor.author | Yen-Cheng Chang | en |
dc.contributor.author | 張言誠 | zh_TW |
dc.date.accessioned | 2021-06-13T01:32:15Z | - |
dc.date.available | 2013-08-16 | |
dc.date.copyright | 2011-08-16 | |
dc.date.issued | 2011 | |
dc.date.submitted | 2011-08-03 | |
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Daqaq, Electromechanical Modeling and Normal Form Analysis of an Aeroelastic Micro-Power Generator, Journal of Intelligent Material Systems and Structures, 22 1045389, 2011. [33]徐仕銘.(2010).並聯與串聯電感同步切換開關介面電路應用於壓電振動能量擷取之研究 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30040 | - |
dc.description.abstract | 從壓電振動能量擷取的研究中,過去使用之線性振動子,其工作範圍通常僅限於共振頻率附近,然而日常環境中之振動源並非為固定頻率之簡諧形式振盪,有鑑於此,本論文以壓電振動子為主軸,探討非線性振動子應用於壓電能量擷取系統之機制及其寬頻效應,並且與過去使用之線性振動子作詳細的分析比較。
本團隊採用於系統中置放磁鐵的方式,使壓電樑受到一磁能保守力影響而改變其運動行為,並透過兩磁鐵間相互作用產生之磁位能,推導出非線性振動子之統御方程式。此外,進一步透過實驗及模擬探討非線性系統之機械動態行為及其電學之輸出響應。 由實驗與模擬結果得知,將非線性振動子應用於壓電能量擷取系統能有效提升系統之輸出功率,除此之外,受磁場影響下系統之電性輸出亦有顯著的寬頻效果。探究其動態行為可發現不同磁場大小會改變系統之位能及其運動行為之間的關係:當系統受到較小磁場影響時總位能曲線將較平滑,隨著磁場增加,會開始出現雙位能井的現象。結果顯示於適當的磁場作用下,非線性振動子將具有較大的振幅,故系統具有較高的電壓及功率輸出,相較於線性振動子,受到外加磁場而改變系統等效勁度之非線性振動子能有效彰顯壓電材料體本身之力電轉換效應。 | zh_TW |
dc.description.abstract | It has been shown that optimum power output of a linear piezoelectric energy harvester occurs when the driving frequency is close to the resonance of the device. However, the vibration sources typically have a wide range of frequency bands. This motivates us developing nonlinear piezoelectric oscillators for vibration energy harvesting.
The nonlinear oscillator is constructed by introducing magnetic couplings on the cantilever beam. As a result, the stiffness of the structure varies depending on the strength of magnetic couplings. The governing equations are derived assuming a suitable form of magnetic potential energy, and their solutions are numerically solved and validated by experiment. The result shows that the magnitudes of harvested power depend on the relative strength of magnetic couplings. At small coupling, the potential energy has a single well, while it exhibits double wells under large magnetic coupling. As a result, the optimal harvested power occurs at the transition from a single well structure to the double well structure. In addition, it is observed that harvested power is enhanced significantly and exhibits wideband effect in a nonlinear system under either harmonic or random excitation. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T01:32:15Z (GMT). No. of bitstreams: 1 ntu-100-R98543046-1.pdf: 4219692 bytes, checksum: b2c007603b1d58a6ca10dc5fc6e94ad0 (MD5) Previous issue date: 2011 | en |
dc.description.tableofcontents | 誌謝 i
中文摘要 iii ABSTRACT iv 目錄 v 圖目錄 vii 表目錄 xiii 第1章 導論 1 1.1 研究動機 1 1.2 文獻回顧 2 1.3 論文架構 6 第2章 壓電振動子之模型建立 7 2.1 壓電效應(Piezoelectric Effect) 7 2.1.1 正壓電效應(Direct piezoelectric effect) 7 2.1.2 逆壓電效應(Converse piezoelectric effect) 8 2.2 壓電懸臂複合樑之模型建立 9 2.3 壓電懸臂複合樑之等效電路模型建立 13 2.4 非線性振動子數學模型建立 15 2.4.1 非線性項理論模型推導 15 2.4.2 線性振動子模型分析 19 2.4.3 非線性振動子模型分析 20 第3章 實驗結果與分析比較 22 3.1 實驗儀器與架構 22 3.2 實驗材料之等效參數量測 26 3.3 線性振動子之實驗結果與分析 29 3.4 磁力等效參數量測 33 3.5 非線性振動子之實驗結果與分析 35 3.6 於不同加速度環境下之實驗結果與分析 41 3.7 模擬分析振動子運動形態(弦波振盪) 48 3.7.1 「Type I」模式: 50 3.7.2 「Type II」模式: 52 3.8 模擬分析振動子運動形態(隨機振盪) 54 第4章 結論與未來展望 63 4.1 結論 63 4.2 未來展望 64 參考文獻 65 A. 附錄-實驗結果 68 B. 附錄-SimulinkR進行數值分析 80 | |
dc.language.iso | zh-TW | |
dc.title | 非線性壓電振動子應用於能量擷取之研究 | zh_TW |
dc.title | Research of Non-linear Oscillator Interfaces in Piezoelectric Energy Harvesting | en |
dc.type | Thesis | |
dc.date.schoolyear | 99-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 陳瑞琳(Ruey-Lin Chen),林憲陽(Hsien-Yang Lin) | |
dc.subject.keyword | 壓電材料,非線性壓電振動子,寬頻效果, | zh_TW |
dc.subject.keyword | Piezoelectric Materials,Non-linear Oscillator,Wideband Effect, | en |
dc.relation.page | 84 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2011-08-03 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 應用力學研究所 | zh_TW |
顯示於系所單位: | 應用力學研究所 |
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