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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 周元昉 | |
dc.contributor.author | Chih-Hang Li | en |
dc.contributor.author | 李智航 | zh_TW |
dc.date.accessioned | 2021-05-20T20:22:09Z | - |
dc.date.available | 2019-01-23 | |
dc.date.available | 2021-05-20T20:22:09Z | - |
dc.date.copyright | 2009-02-03 | |
dc.date.issued | 2009 | |
dc.date.submitted | 2009-01-23 | |
dc.identifier.citation | [1] C. -K. Lee and F. C. Moon , “Modal Sensors/Actuators” , ASME J. Appl. Mech. , Vol. 57 , pp. 434-441 , 1990.
[2] Robert L. Clark , Chris R. Fuller , and Al Wicks , “Characterization of Multiple Piezoelectric Actuators for Structural Excitation” , J. Acoust. Soc. Am. , Vol. 90 , No. 1 , pp. 346-357 , July 1991. [3] H. S. Tzou and H. Q. Fu , “A Study of Segmentation of Distributed Piezoelectric Sensors and Actuators, Part I : Theoretical Analysis” , Journal of Sound and Vibration , Vol. 172 , No. 2 , pp. 247-259 , 1994. [4] H. S. Tzou and H. Q. Fu , “A Study of Segmentation of Distributed Piezoelectric Sensors and Actuators, Part II : Parametric Study and Active Vibration Controls” , Journal of Sound and Vibration , Vol. 172 , No. 2 , pp. 261-275 , 1994. [5] Chang-Qing Chen and Ya-Peng Shen , “Optimal Control of Active Structures with Piezoelectric Modal Sensors and Actuators” , Smart Mater. Struct. , Vol. 6 , pp. 406-409 , 1997. [6] Dongchang Sun and Dajun Wang , “Distributed Piezoelectric Element Method for Vibration Control of Smart Plates” , AIAA Journal , Vol. 37 , No. 11 , pp. 1459-1463 , November 1999. [7] M. I. Friswell , “Partial and Segmented Modal Sensors for Beam Structures” , Journal of Vibration and Control , Vol. 5 , pp. 619-637 , 1999. [8] Hartono Sumali , Karsten Meissner and Harley H. Cudney , “A Piezoelectric Array for Sensing Vibration Modal Coordinates” , Sensors and Actuators A , Vol. 93 , pp. 123-131 , 2001. [9] Dongchang Sun and Liyong Tong , “Vibration Control of Plates Using Discretely Distributed Piezoelectric Quasi-Modal Actuactors / Sensors” , AIAA Journal , Vol. 39 , No. 9 , pp. 1766-1772 , September 2001. [10] Dongchang Sun and Liyong Tong , “Modal Control of Smart Shells by Optimized Discretely Distributed Piezoelectric Transducers” , International Journal of Solids and Structures , Vol. 38 , pp.3281-3299 , 2001. [11] Alberto Donoso and Jose´ Carlos Bellido, “Distributed piezoelectric modal sensors for circular plates” , Journal of Sound and Vibration , Vol. 319 , pp.50-57 , 2009. [12] 朱家輝,模態感測器之量測與信號處理,國立台灣大學機械工程研究所碩士論文,中華民國九十一年六月。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/9428 | - |
dc.description.abstract | 本文使用最佳化方法來設計壓電複合結構之模態感測器。通常儀器所量測到的信號為所有模態的信號的加總,然而透過不斷的修正電極形狀來使所要感測的模態之信號遠大於其餘模態的信號。先利用有限元素法分析軟體ANSYS分析出全部鋪滿接地電位的電極之系統模態,再利用本文所提不影響系統模態的切割方法切割出所需的電極形狀,而所需電極形狀配合系統模態振形透過MATLAB進行形狀之最佳化設計,並利用信號後處理來感測特定模態,此時只針對某幾個特定模態來設計。反之,亦可以達到濾除某特定模態之信號。
為驗證本文所提方法的可行性,以鋁板黏貼壓電片為例,利用微影製程定義出最佳電極的形狀,使用衝擊槌來激振試片,將電流信號轉電壓信號並作運算,再將信號輸入頻譜分析儀,結果確能達到模態感測器與模態濾除器的效果。 | zh_TW |
dc.description.abstract | Piezoelectric modal sensors can be created using the orthogonal property of eigenfunctions. Sensors have been designed for use with 1-D flexural structures by shaping electrode patterns proportional to modal strains. However, it is not easy to apply the same concept to general structures due to the difficulty in implementing the location weight needed for signals. Therefore, a nonlinear optimization scheme is proposed in this paper to design modal filters for general structures. For any given electrode pattern, the signal contributed from each mode is found by integrating the corresponding free surface charges on the sensing electrode. A modal filter is obtained by modifying the electrode pattern to achieve the desired relative signal strength for different modes.
Sensors capable of capturing or filtering out the signal generated by a specific mode can be developed. A PZT coated aluminum plate is used as an example. Mode shapes are found with finite element analysis. Design of both a mode-pass and mode-reject filter is demonstrated. This method also works for three-dimensional structures, as only free surface charges are involved in the operation of modal filters. | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T20:22:09Z (GMT). No. of bitstreams: 1 ntu-98-R95522517-1.pdf: 6523289 bytes, checksum: 330d1adde44f5edd4bfba5ec2d9a88ee (MD5) Previous issue date: 2009 | en |
dc.description.tableofcontents | 中文摘要 i
Abstract ii 目 錄 iii 表目錄……………………………………………………………………….…….vi 圖目錄…………………………………………….……….…………………….xxv 符號表…………………………………………………………...…………….xxxvi 第一章 緒論 1 1.1 前言 1 1.2 文獻回顧 1 1.3 本文內容 3 第二章 模態感測器之設計 4 2.1 壓電體之模態分析 4 2.2 壓電系統之邊界條件 6 2.3 模態感測之設計 8 第三章 實例分析與討論 11 3.1 有限元素分析 11 3.2 單功用感測電極與分析結果 12 3.2.1 第一模態感測 13 3.2.2 第二模態感測 15 3.2.3 第三模態感測 16 3.2.4 第四模態感測 17 3.2.5 第五模態感測 17 3.2.6 第一模態濾除 17 3.2.7 第二模態濾除 18 3.2.8 第三模態濾除 19 3.2.9 第四模態濾除 20 3.2.10 第五模態濾除 20 3.3 多功能感測電極與分析結果 20 3.3.1 第一、二和五模態濾除 20 3.3.2 第三模態感測與濾除 22 3.3.3 第四模態感測與濾除 23 3.3.4 第五模態感測與濾除 24 第四章 實驗與討論 26 4.1 試片製造 26 4.1.1 定義電極形狀 26 4.1.2 黏貼壓電片 27 4.1.3 量測電路 28 4.2 量測架構 28 4.2.1 雷射都卜勒儀感測位移速度 29 4.2.2 感測器與濾波器效果檢測 29 4.3 量測結果 30 4.3.1 第一模態感測器與第一模態濾除器 30 4.3.2 第二模態感測器與第二模態濾除器 32 4.3.3 第三模態感測器與第三模態濾除器 32 4.3.4 第四模態感測器與第四模態濾除器 33 4.3.5 第五模態感測器與第五模態濾除器 34 4.3.6 多功能第一、二和五模態濾除器 35 4.3.7 多功能第三模態感測與濾除器 36 4.3.8 多功能第四模態感測與濾除器 36 4.3.9 多功能第五模態感測與濾除器 37 4.3.10 結果討論 38 第五章 結論與建議 40 參考文獻 41 附表 43 附圖 100 附錄A 153 附錄B 154 附錄C 155 | |
dc.language.iso | zh-TW | |
dc.title | 壓電複合結構模態感測與濾除之研究 | zh_TW |
dc.title | Research of Modal Sensors and Filters of Piezoelectric Composite Structures | en |
dc.type | Thesis | |
dc.date.schoolyear | 97-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張家歐,盧中仁 | |
dc.subject.keyword | 壓電複合結構,最佳化,模態感測,模態濾除, | zh_TW |
dc.subject.keyword | Piezoelectric Composite Structures,sensor,filter,optimization, | en |
dc.relation.page | 177 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2009-01-23 | |
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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