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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30543完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳國在 | |
| dc.contributor.author | Shih-Kuo Liu | en |
| dc.contributor.author | 劉世國 | zh_TW |
| dc.date.accessioned | 2021-06-13T02:07:42Z | - |
| dc.date.available | 2007-07-16 | |
| dc.date.copyright | 2007-07-16 | |
| dc.date.issued | 2007 | |
| dc.date.submitted | 2007-06-29 | |
| dc.identifier.citation | [1]Paul Lueg,“Process of silencing sound oscillation”,U.S Patent NO.2043416,1936。
[2]C.R.Fuller and J.D.Jones,Experiments on reduction of propeller induced interior noise by active control of cylinder vibration,J.Sound Vib.112 389-395,1987。 [3]C.R.Fuller,Active control of sound transmission/radiation from elastic plates by vibration inputs,1:analysis,J.Sound Vib.136 1-15,1990。 [4]E.K.Dimitriadis and C.R.Fuller,Active control of sound transmission through elastic plates using piezoelectric actuators,American Institude of Aeronautic and Astronautic Journal 29(11) 1771-1777,1991。 [5]蔣官廷,“平板聲輻射與聲穿透之主動控制”,國立台灣大學造船及海洋工程學研究所碩士論文,1999。 [6]黃思銘,“平板聲輻射之適應性主動控制”,國立台灣大學造船及海洋工程學研究所碩士論文,2001。 [7]詹英滋,“平板聲輻射之多點適應性主動控制”,國立台灣大學造船及海洋工程學研究所碩士論文,2002。 [8]Low K.H,“An equivalent-center-weight factor method for predicting fundamental frequency of plates carrying multiple masses from experimental test data”J. of Sound and Vib.,Vol.168 p.123-139,1993。 [9]Achong A.“Vibrational analysis of mass loaded plates and shallow shells by the receptance method with application to the steelpan”J. of Sound and Vib.,Vol.17 p.191-207,1996。 [10]R.Szilard,“Theory and Analysis of Plates,Classical and Numerical Methods”,Prentice-Hall Book Co.,New Jersey ,p.435,1966。 [11]Vlasov V.Z.“Some New Problem on Shell and Thin Structures”Nat.Adv.Comm.Aeron.,NacaTech.Memo.NO.1204,1949。 [12]R.M.Lin and M.K.Lin“Natural frequencies plates with arbitrary concentrated mass and stiffness modifications”Computers and Structures Vol.57 p721-729,1995。 [13] J.S.Wu and S.S.Lou “Use of Analytical-And-Numerical Combined Method in Free Vibration Analysis of a Rectangular Plate with any Number of Point Masses and Translational Springs”,J. of Sound and Vib.,200(2),p179-194,1994。 [14]C.E.Wallace“Radiation resistance of a rectangular panel”J.Acoust.Soc.Am.51,p946-952.(1971)。 [15]S.J.Elliott,“Radiation modes and the active control of sound power”,J.Acoust.Soc.Am.94(4)2194-2204,1993。 [16]M.E.Johnsons and S.J.Elliott,“Active control of sound radiation using volume velocity cancellation”,J.Acoust.Soc. Am.98(4),2174-2186,1995。 [17]C.Guigou,Z.Liand and C.R.Fuller,“The relationship between volume velocity and far-field radiated pressure of a planar structure”,J.S.and Vib 197(2),252-254,1996。 [18]P.A. Nelson and S.J. Elliott,“Active Control of Sound”,Academic Press,1993。 [19]Alan V. Oppenheim,Alan S. Willsky and S.Hamid Nawab,“Signals & Systems”,Prentice Hall,1983。 [20]B.Widrow and M.E.Hoff,“Adaptive switching circuits”,IRE WESCON Conv.Rec.,Pt.4,p.69-104,1960。 [21]Bernard Widrow,Samuel D. Stearns,Adaptive Signal Processing,Prentice Hall,1985。 [22]Simon Haykin,Adaptive Filter Theory,4th Ed.,Prentice Hall,2002。 [23] 葉育超,“內支承及附加集中質量對平板聲輻射改善之研究”,國立台灣大學工程科學及海洋工程學研究所碩士論文,2004。 [24]陳國在,“聲音強度法量測材料透過損失的最適條件受材料改變之影響研究”,國科會研究報告NSC 77-0410-E002-41,1998。 [25]江哲銘,賴榮平,王為,“住宅音環境控制之研究(五)-小試體輕質構造隔音效果之音強法實驗探討”,中華民國音響學會學術研討會論文集,1990。 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30543 | - |
| dc.description.abstract | 本文旨在針對四邊固定的矩形均勻平板進行內支承改裝,先破壞其基本共振模態,使其共振頻率偏移,再利用FIR數位濾波器配合LMS適應性演算法做主動式控制,以進一步達到抑制平板輻射聲功率的目的。
研究結果顯示,矩形均勻平板經過內支承改裝再施以適應性主動控制之後,幾乎皆能有效降低平板低頻時各共振模態輻射聲功率達10dB左右,且較僅主動控制或僅內支承改裝多了平均3至5dB的降幅。但306及391Hz僅作主動控制時,效果最佳。533Hz僅作內支承改裝時,效果最佳。 | zh_TW |
| dc.description.abstract | This study is to focus on the refashioning using inner support of square homogeneous plate with fixed ends. To achieve the suppressing of the acoustic power radiation from plate, the fundamental mode is destroyed first to shift the associated resonant frequency. Meanwhile, a FIR filter with LMS algorithm is selected to be the involved control system.
The results from study clearly show that refashioning the square homogeneous plate using inner support to combine the adaptive active control can achieve almost 10dB attenuation at low resonant frequencies of acoustic radiation from plate. Otherwise only 5dB attenuation is achieved for either inner support refashioning or active control to be used. Summarily speaking, the best effectiveness for only using active control or inner support will, respectively, exist at 306 or 391 or 533Hz. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T02:07:42Z (GMT). No. of bitstreams: 1 ntu-96-R92525036-1.pdf: 855401 bytes, checksum: 10adb0fc5b9d6380622b493e2a133d23 (MD5) Previous issue date: 2007 | en |
| dc.description.tableofcontents | 誌謝.....................................................Ⅰ
摘要.....................................................Ⅱ 目錄.....................................................Ⅳ 圖目錄...................................................Ⅵ 表目錄...................................................Ⅸ 第一章 緒論.................................1 1.1 前言..................................................1 1.2 文獻回顧..............................................1 1.3 研究方向..............................................3 第二章 平板理論.............................4 2.1 平板動態分析..........................................4 2.2 改裝平板動態分析................ .....................6 2.3 改裝平板輻射聲功率...................................10 2.4 體速度相消法.........................................13 2.5 淨體速度與遠場聲壓的關係.............................14 第三章 適應性主動式控制系統................16 3.1 數位濾波器...........................................16 3.2 LMS演算法............................................19 第四章 實驗過程............................23 4.1 實驗佈置.............................................23 4.2 內支承改裝...........................................27 4.3 實驗方法.............................................32 第五章 實驗結果與討論......................36 5.1 實驗結果.............................................36 5.2 討論.................................................57 第六章 結論與未來研究方向..................59 6.1 結論.................................................59 6.2 未來研究方向.........................................60 參考文獻.................................................62 | |
| dc.language.iso | zh-TW | |
| dc.title | 內支承改裝平板聲輻射之適應性主動控制 | zh_TW |
| dc.title | Adaptive Active Control on the Sound Radiation from an Inner-Supported plate | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 95-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 柯文俊,劉雲輝 | |
| dc.subject.keyword | 內支承,平板,聲輻射,適應性,主動控制, | zh_TW |
| dc.subject.keyword | Adaptive,Active Control,Sound Radiation,nner-Supported,plate, | en |
| dc.relation.page | 65 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2007-07-03 | |
| 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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