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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 王昭男 | |
| dc.contributor.author | Wen-Hsin Hsu | en |
| dc.contributor.author | 許文馨 | zh_TW |
| dc.date.accessioned | 2021-06-15T05:51:10Z | - |
| dc.date.available | 2013-08-20 | |
| dc.date.copyright | 2010-08-20 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-08-18 | |
| dc.identifier.citation | [1] J. Eargle and M. Gander, “Historical Perspectives and Technology overview of Loudspeakers for Sound Reinforcement,” Journal of the Audio Engineering Society, vol.52, no.4(April 2004)
[2] A. L. Thuras, “Sound Translating Device,” U.S. Patent No. 1,869,178, application Aug. 15, 1930, patented July 26, 1932. [3] B. N. Locanthi, “Application of Electric Circuit Analogies to Loudspeaker Design Problem,” IRE Trans. Audio, vol. PGA-6, p.15(Mar. 1952); republished in Journal of the Audio Engineering Society, vol.19, p.778(Oct. 1971) [4] L. L. Beranek, Acoustics, McGraw-Hill, New Yourk(1954) [5] F. J. van Leeuwen, “De Basreflexstraler in de Akoestiek,” Tijdschrift Nederlands Radiogenootschap, vol.21, p.195(Sept. 1956) [6] E. de Boer, “Acoustic Interaction in Vented Loudspeaker Enclosures,” J. Acoust. Soc. Amer. (Letter) vol.31, p.246(Feb. 1959) [7] R. H. Lyon, “On the Low-Frequency Radiation Load of a Bass-Reflex Speaker,” J. Acoust. Soc. Amer. (Letter) vol.29, p.654(May 1957) [8] J. F. Novak, “Performance of Enclosures for Low-Resonance High-Compliance Loudspeakers,” Journal of the Audio Engineering Society, vol.7, p.29 (Jan. 1959) [9] A. N. Thiele, “Loudspeakers in Vented Boxes,” Proc. IREE (Australia), vol.22, p. 487(Aug. 1961); republished in Journal of the Audio Engineering Society, vol.19, p.382(May 1971) and p.471(June 1971). [10] Y. Nomura, “An analysis of Design Condition of a Bass-Reflex Loudspeaker Enclosure for Flat Response” Electron. Commun. Japan, vol.52-A, no.10, p. 1(1969) [11] R. H. Small, “Direct-Radiator Loudspeaker System Analysis,” IEEE Transactions on Audio and Electroacoustics , AU-19 , p.269(1971) [12] R. H. Small, “Vented-Box Loudspeaker Systems, Parts I-IV, ” Journal of the Audio Engineering Science, vol. 21, p.596 (Oct. 1973), p.438 (July/Aug. 1973), p.549 (Sept. 1973):,p.635 (Oct. 1973) [13] R. H. Small, “Passive Radiator Loudspeaker Systems, Parts I-IV,” Journal of the Audio Engineering Society, vol.22, p.596(Oct. 1974), p.683(Nov. 1974) [14] J. Borwich, “Loudspeaker and Headphone Handbook,” third ed., Focal Press, Oxford, UK(2001) [15] J. M. Eargle , Loudspeaker Handbook , New York , Chapman & Hall ,p.6(1997) [16] J.-J. E. Slontine and W. Li, “Applied Nonlinear Control,” Prentice-Hall(1991) [17] M. A.H. Beerling, C. H. Slump, and O. E. Hermann, “Reduction of Nonlinear Distortion in loudspeakers with Digital Motional Feedback,” presented at the Convention of the Audio Engineering Society, preprint 3820.(26 Feb. -1 Mar. 1994) [18] Suykens, Johan, Joos Vandewalle, and Johan van Ginderdeuren, “Feedback linearization in an electrodynamic loudspeaker, Part I,” Leuven.(April 22, 1992) [19] W. Klippel, “The Mirror Filter-A New Basis for Reducting Nonlinear Distortion and Equalising Response in Woofer Systems,” Journal of the Audio Engineering Society, vol.40, p.675(Sept. 1992) [20] W. Klippel, “Adaptive Nonlinear Control of Loudspeaker Systems,” Journal of the Audio Engineering Society, vol.46, p. 939 (Nov. 1998) [21] 經濟部中小企業處、台灣電子檢驗中心編印，揚聲器音質改善研究手冊，(May 1989) [22] V. Dickason, “Loudspeaker Design Cookbook”, 7th ed., Audio Amateur Press, Peterborough, New Hampshire. [23] 薛毓龍，微型揚聲器之聲壓模擬與參數分析，逢甲大學(2007) [24] Y. C. Shiah, H. C. Her, J. H. Huang, and B. Huang, “Parametric analysis for a miniature loudspeaker used in cellular phones,” Journal of Applied Physics 104, 104905(2008) [25] 白明憲, 工程聲學, 全華科技圖書股份有限公司 [26] E. K. Lawrence, R. F. Austin, B. C. Alan and V. S. James, “Fundamentals of Acoustics,” John Wiley & Sons, Inc., [27] W. Klippel, “Loudspeaker Nonlinearities–Causes, Parameters, Symptoms” http://www.klippel.de/ (2006) [28] A. Bright, Active Control of Loudspeakers: An Investigation of Practical Applications, Ørsted•DTU, Acoustic Technology, Technical University of Denmark(2002) [29] D. R. Birt, “Nonlinearities in Moving-Coil Loudspeakers with Overhung Voice Coils,” Journal of the Audio Engineering Society, vol.39, p.219(April.1991) [30] M-H Chiang, “Digital Control System,” Department of Engineering Science and Ocean Engineering, National Taiwan University [31] A. V. Oppenheim, and R.W. Schafer, Discrete-time Signal Processing, Prentice Hall, Englewood Cliffs, New Jersey, USA. (1989) [32] A. Isidori, Nonlinear Control Systems, 3rd ed.(Springer, New York, 1995) [33] H. Schurer, “Theoretical and Experimental Comparison of Three Methods for Compensation of Electrodynamic Transducer Nonlinearity,” Journal of the Audio Engineering Society, vol.46, p. 723 (Sept. 1998) | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/47217 | - |
| dc.description.abstract | 本研究的主要目的在於利用所建立的非線性喇叭分析模式，來推導回饋線性化控制理論的控制器，進而應用於實際喇叭的非線性輸出控制，期能降低高頻諧波的音量。
本文的研究分為兩部分，首先考慮喇叭運作的電路、薄膜振動與聲音輻射，分別建立線性化的方程式，並合併得到輸入電壓與薄膜振動位移以及輸出音壓間之關係，建立完整的喇叭模擬系統，並在離散域下模擬電壓輸入喇叭系統所產生的聲壓，藉此分析微型喇叭中各個部份對於頻率響應的影響，並透過實驗量測驗證模擬分析的正確性。 第二部份為探討微型喇叭系統內元件的非線性效應對於喇叭頻率響應的影響，首先模擬微型喇叭的非線性系統，並對喇叭在實際量測時所產生的非線性輸出加以討論，以實際量測結果作為依據，修正非線性模擬所需的電-力轉換係數。最後使用回饋線性化(Feedback Linearization)之理論來對喇叭系統做控制，建立一逆動態模型(Inverse Dynamic)來降低或消除其非線性效應，以使喇叭在較大聲壓輸出時仍可維持較好的聲音輸出品質。 | zh_TW |
| dc.description.abstract | An application of feedback linearization control for micro-loudspeakers is presented in this paper. With inverse dynamic processor, signal distortion caused by loudspeaker nonlinearities can be compensated. First of all, the loudspeaker system separates into three parts: electrical, mechanical and radiation to build the classical linear and nonlinear models. Then converting the theoretical model into discrete-time system and using digital processing technique to simulate the output of the loudspeaker system. The theoretical model is verified by comparing the frequency response of real loudspeaker to the numerical result of simulation. The agreement is good. The second part is to investigate the effect of the parameter variation on the output of the loudspeaker. In this study only the transduction coefficient varies with displacement is considered. This nonlinearity will cause unwanted harmonics in the response of loudspeaker. To reduce this nonlinear effect, a feedback linearization method from nonlinear control theory is applied to the nonlinear loudspeaker model. Numerical simulation reveals that the feedback linearization method can cancel the harmonic signals effectively. Finally, the present approach is applied on the nonlinear control of the real loudspeaker. The result is some parts of harmonics are reduced obviously. But some output sound signal seems not be improved under control. This may due to the incorrect values of transduction coefficient. But it still needs a further study. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T05:51:10Z (GMT). No. of bitstreams: 1 ntu-99-R96525029-1.pdf: 623752 bytes, checksum: 0e3451b66e4c72baaf5f405df15072ca (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 口試委員會審定書...........................................................................................................I
誌謝.................................................................................................................................II 中文摘要........................................................................................................................III 英文摘要........................................................................................................................IV 目錄................................................................................................................................V 圖目錄...........................................................................................................................VII 表目錄............................................................................................................................IX 第一章 緒論....................................................................................................................1 1.1 研究緣起與目的...............................................................................................1 1.2 文獻回顧...........................................................................................................1 1.3 論文架構...........................................................................................................4 第二章 喇叭數學模式....................................................................................................5 2.1 喇叭系統模擬...................................................................................................6 2.1.1 機械部分的模擬....................................................................................6 2.1.2 電路部分的模擬....................................................................................8 2.1.3 聲學部分的模擬....................................................................................9 2.1.4 聲壓計算..............................................................................................13 2.1.5 電壓-聲壓關係.....................................................................................14 2.2 非線性參數.....................................................................................................15 2.3 離散時域模式.................................................................................................18 2.3.1 Z轉換.....................................................................................................18 2.3.2 單自由度系統的receptance 轉換.......................................................18 2.4 喇叭的非線性離散時域模式.........................................................................21 第三章 控制理論..........................................................................................................22 3.1 連續系統回饋線性化(Feedback Linearization).............................................22 3.2 離散系統的回饋線性化.................................................................................26 3.3 喇叭的回饋線性化模型.................................................................................27 第四章 模擬與實驗結果..............................................................................................29 4.1 喇叭系統實驗流程.........................................................................................29 4.2 實驗架構.........................................................................................................30 4.3 頻率響應的模擬及實驗.................................................................................31 4.4 喇叭的非線性輸出.........................................................................................33 4.5 非線性系統訊號的模擬.................................................................................34 4.6 控制器模擬.....................................................................................................41 4.7 控制的實驗結果.............................................................................................45 第五章 結論與展望......................................................................................................54 5.1 結論.................................................................................................................54 5.2 未來展望.........................................................................................................55 參考文獻........................................................................................................................56 附錄...............................................................................................................................58 | |
| dc.language.iso | zh-TW | |
| dc.subject | 諧波 | zh_TW |
| dc.subject | 微型喇叭 | zh_TW |
| dc.subject | 回饋線性化 | zh_TW |
| dc.subject | 逆動態模型 | zh_TW |
| dc.subject | 非線性控制 | zh_TW |
| dc.subject | nonlinear control | en |
| dc.subject | micro-loudspeakers | en |
| dc.subject | feedback linearization | en |
| dc.subject | inverse dynamic processor | en |
| dc.subject | harmonic | en |
| dc.title | 微型喇叭之輸出分析及品質改善之研究 | zh_TW |
| dc.title | A Study on Output Analysis and Quality Improvement of Micro-Speaker | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 謝傳璋,江茂雄 | |
| dc.subject.keyword | 微型喇叭,回饋線性化,逆動態模型,非線性控制,諧波, | zh_TW |
| dc.subject.keyword | micro-loudspeakers,feedback linearization,inverse dynamic processor,harmonic,nonlinear control, | en |
| dc.relation.page | 60 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2010-08-18 | |
| 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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