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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 | 宋家驥 | |
dc.contributor.author | Ya-Wen Chu | en |
dc.contributor.author | 朱雅雯 | zh_TW |
dc.date.accessioned | 2021-06-13T07:10:46Z | - |
dc.date.available | 2015-07-26 | |
dc.date.copyright | 2005-07-28 | |
dc.date.issued | 2005 | |
dc.date.submitted | 2005-07-26 | |
dc.identifier.citation | 參考文獻
[1]吳朗,”電子陶瓷-壓電”,全欣資訊圖書,1994。 [2]吳朗,”電子陶瓷-介電”,全欣資訊圖書,1994。 [3]鄭建華、張建中、賴文斌與游夢龍,1996,檢測科技十四卷五期(9-10),pp.252-263,超音波壓電換能器的設計與製造。 [4]鄭振東,”超音波工程”,初版,台北市,全華科技圖書,民國88年6月。 [5]蔣源峰,”體聲波共振器與濾波器之研究”,私立義守大學電機工程學系碩士論文,民國93年。 [6]張元聰,”匹配層對壓電性超音波換能器特性之影響”,國立成功大學電機工程學系碩士論文,民國87年。 [7]W.P. Mason, Electromechanical Transducers and Wave Filters, Princeton. NJ: Van Nostrand, 1948. [8]R.Krimholtz, D.A.Leedom and G.L.Matthaei, “New equivalent circuits elementary piezoelectric transducer”, Electron.Lett., Vol.6, No.13, pp.389-399, 1970. [9]C. S. Desilets, J. D. Fraser, and G. S. Kino, “The design of efficient broad-band piezoelectric transducers,” IEEE Trans. Sonics Ultrason., Vol. SU-25, No. 3, pp.115–125, 1978. [10]J. Souquet, P. Defranould and J.Desbois, “Design of Low-Loss Wide-Band Ultrasonic Transducers for Noninvasive Medical Application”, IEEE Trans. Sonics and Ultrasonics, Vol. su-26, No.2, pp.75-81, 1979. [11]D. A. Hutchins and D. W. Schindel, “Advances in non-contact and air-coupled transducers”, in Proc. IEEE Ultrason. Symp., 1994, pp. 1245–1254. [12]Anthony Gachagan, Gordon Hayward, Stephen P.Kelly, and Walter Galbraith, “Characterization of Air-coupled Transducers”, IEEE Transcations on Ultrasonics, Ferroelectrics, and Frequency Control, Vol.43, No.4, July 1996. [13]Yongrae Roh, Changho Moon, “Design and Fabrication of an Ultrasonic Speaker With Thickness Mode Piezoceramic Transducer”, Accepted 26 December 2001, 321-326, Sensors and Actuators. [14]Minoru Toda, “New type of matching layer for air-coupled ultrasonic transducers”, IEEE Transcations on Ultrasonics, Ferroelectrics, and Frequency Control, Vol.49, No.7, May 2002. [15]Kevin A.Snook, Jian-Zhong Zhao, Carlos H.F. Alves, Wo-Hsing Chen, Richard J.Meyer, Timothy A.Ritter, K.Kirk Shung, “Design, Fabrication, and Evaluation of High Frequency, Single-Element Transducers Incorporating Different Materials”, IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control, Vol.49, No.2, February 2002, pp.169-176. [16]Krzysztof J. Opielinski, Tadeusz Gudra, “Influence of the thickness of multiplayer matching systems on the transfer function of ultrasonic airborne transducer”, Institute of Telecommunication and Acoustics, Wrocław University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wrocław, Poland. [17]Tadeusz Gudra, Krzysztof J. Opieli_nski, “Influence of acoustic impedance of multiplayer acoustic systems on the transfer function of ultrasonic airborne transducer”, Ultrasonics 40, pp.457-463, 2002. [18]T. E. Gomez, “Fabrication and characterization of silica aerogel films for air-coupled piezoelectric transducers in the megahertz range,” IEEE Ultrasonic Symposium, pp. 1107–1110, 2002. [19]Tomas E. Gomez Alvarez-Arenas, “Acoustic Impedance Matching of Piezoelectric Transducers to the Air”, IEEE Transcations on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 51, No. 5, May 2004. [20]David M. Pozar,“Microwave engineering”, 2nd ed. [21]Daniel Royer,“Elastic Waves in SolidⅡ”, Springer, 1999. [22]David K.Cheng,“Field and Wave Electromagnetics”, 2nd. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/35799 | - |
dc.description.abstract | 在日新月異的生活中,超音波的應用已不可或缺,本文重點在探討超音波壓電換能器(Ultrasonic Piezoelectric Transducer)配置多層匹配層(Matching Layer),其壓電片聲阻抗(Acoustic Impedance)與聲傳介質聲阻抗匹配之設計概念。
本文首先介紹壓電理論,並說明超音波壓電換能器之各層結構材料,並藉由傳輸線(Transmission Line)原理,將匹配層等效為傳輸線,在最平坦化頻率響應(Maximally Flat-Top Response)條件下推導出於n層匹配層中,每一層匹配層的阻抗值,並得到匹配層越多層則使頻寬越寬之特性。再經由壓電片波傳方程式,推導出壓電換能器之阻抗矩陣(Impedance Matrix),並針對其阻抗矩陣之架構,利用聲波能量傳遞的觀念來分析換能器內部結構,進而提出一套傳輸矩陣法(Transmission Matrix Method),用以模擬壓電換能器多層匹配層結構的數值模型。 以傳輸矩陣之方式來模擬換能器,可得到換能器機械端輸出阻抗頻率響應圖其與聲傳介質阻抗匹配,也模擬出換能器的電端輸入阻抗與頻率的關係圖,故可用於設計換能器之參考標準。本論文成功地藉由傳輸矩陣法模擬出壓電換能器多層匹配層結構的理論架構及數值計算。 | zh_TW |
dc.description.abstract | In recent years, the study of ultrasonic waves has found indispensable applications in the real world. In this thesis, we present the acoustic impedance matching result of the piezoelectric thin plate and the propagation medium when we increase the number of matching layers.
To begin, we introduce the theory of piezoelectricity and explain the structure of the ultrasonic piezoelectric transducer. By extending the theory of transmission line, we find the impedances of the matching layer and find the impedances of each layer in conjunction with the maximally flat-top response. Finally, we conclude that the addition of the matching layers results in the widening of the transmission frequency for the piezoelectric transducer. An impedance matrix for the piezoelectric transducer can be derived from the piezoelectric wave equation which is called as the transmission matrix method. Using the transmission matrix method we obtain the mechanical and electric impedances of frequency response for the ultrasonic piezoelectric transducer. At the end of this paper, we show the simulation results of the multilayer matching structure of the piezoelectric transducer which can be helpful for designing the ultrasonic piezoelectric transducer. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T07:10:46Z (GMT). No. of bitstreams: 1 ntu-94-R92525011-1.pdf: 2233152 bytes, checksum: 90b1cffe246ab0cf0051ad951fd5a45e (MD5) Previous issue date: 2005 | en |
dc.description.tableofcontents | 目 錄
頁次 中文摘要………………………………………………………………Ⅰ 英文摘要………………………………………………………………Ⅱ 目錄……………………………………………………………………Ⅲ 附圖目錄………………………………………………………………Ⅵ 附表目錄………………………………………………………………Ⅸ 符號註釋………………………………………………………………Ⅹ 第一章 概 論 1-1 前 言………………………………………………………………1 1-2 研究動機……………………………………………………………2 1-3 文獻回顧……………………………………………………………2 1-4 論文內容及架構……………………………………………………6 第二章 壓電理論和超音波換能器簡述 2-1 壓電現象……………………………………………………………8 2-2 壓電效應……………………………………………………………9 2-3 壓電材料…………………………………………………………12 2-4 壓電方程式………………………………………………………13 2-5 壓電材料重要參數………………………………………………15 2-6 超音波壓電換能器結構…………………………………………17 2-6-1壓電片……………………………………………………………18 2-6-2匹配層……………………………………………………………19 2-6-3背膠層……………………………………………………………20 第三章 匹配層阻抗匹配探討 3-1 傳輸線原理………………………………………………………21 3-2 阻抗匹配…………………………………………………………25 3-2-1四分之一波長傳輸線阻抗匹配…………………………………25 3-2-2 兩層匹配層串接阻抗匹配……………………………………27 3-2-3 N層匹配層串接阻抗匹配………………………………………29 3-2-4 極平坦化頻率響應……………………………………………30 第四章 換能器等效電路與傳輸矩陣法 4-1壓電片波動方程式…………………………………………………36 4-2 換能器阻抗矩陣…………………………………………………39 4-3 換能器機械端的輸出阻抗………………………………………41 4-4 傳輸矩陣法………………………………………………………42 第五章 結果與討論 5-1 匹配層層數對頻寬之影響………………………………………52 5-2 壓電片在不同聲傳介質的匹配…………………………………56 5-3換能器多層匹配結構之機械端模擬結果與分析…………………58 5-3-1換能器在聲傳介質空氣中………………………………………58 5-3-2換能器在聲傳介質水中…………………………………………60 5-3-3換能器在聲傳介質鋼中…………………………………………61 5-4換能器多層匹配結構之電端模擬結果與分析……………………63 5-4-1換能器在聲傳介質空氣中………………………………………63 5-4-2換能器在聲傳介質水中…………………………………………65 5-4-3換能器在聲傳介質鋼中…………………………………………66 5-5背膠材料的有、無…………………………………………………67 5-6不同壓電片在空氣介質的匹配……………………………………68 5-7轉換函數的探討……………………………………………………75 5-7-1匹配層厚度對轉換函數的影響…………………………………75 5-7-2匹配層層數對轉換函數的影響…………………………………81 第六章 結論與未來方向 6-1 結論………………………………………………………………84 6-2 展望………………………………………………………………85 參考文獻………………………………………………………………86 | |
dc.language.iso | zh-TW | |
dc.title | 超音波壓電換能器多層匹配結構之研析 | zh_TW |
dc.title | Analysis of Multi-Matching Layers of Ultrasonic Piezoelectric Transducer | en |
dc.type | Thesis | |
dc.date.schoolyear | 93-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 鄭建華,李永春,林輝政 | |
dc.subject.keyword | 超音波壓電換能器,匹配層,聲阻抗,傳輸線,最平坦化頻率響應,阻抗矩陣,傳輸矩陣法, | zh_TW |
dc.subject.keyword | Ultrasonic Piezoelectric Transducer,Matching Layer,Acoustic Impedance,Transmission Line,Maximally Flat-Top Response,Impedance Matrix,Transmission Matrix Method, | en |
dc.relation.page | 87 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2005-07-27 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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