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研究生:陳智能
研究生(外文):Chih-Neng Chen
論文名稱:抑制雜訊傳導之濾波器設計
論文名稱(外文):Filter design for suppression of noise propagation
指導教授:張璞曾張璞曾引用關係
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電機工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:81
中文關鍵詞:電磁干擾電子醫療儀器電磁雜訊濾波器法規量測傳導
外文關鍵詞:medical electronic deviceselectromagnetic interference (EMI)filterselectromagnetic noisetransmissionEMI regulationsEMI measurement
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本論文為設計研發改進現有使用於電子醫療儀器之濾波器電路,提供一較佳與快速之設計架構,製作具抑制或消除電子醫療儀器於使用時所產生電磁干擾訊號,以及避免遭受到環境中既有存在電磁干擾訊號之濾波器電路,避免電子醫療儀器設備所檢測到的數據資料錯誤或產生誤動作,提高儀器設備使用或檢測上之正確性與可靠度。
本論文就電磁干擾雜訊訊號之產生與傳導路徑,以及各種電磁干擾法規要求與量測方式,進行詳細與完整說明,並以既有市售產品所採用之設計方式,進行分析修改,重新設計一個電磁干擾抑制與消除濾波器電路架構,改善以往設計於完成電路設計後,均需長時間反覆進行驗測與電路修正之缺點,此新型濾波器電路架構可避免研發過程中因反覆重工所造成時間損失,大幅縮減研發所需時程,加速產品上
市。
新型濾波器架構經實驗與數據模擬,實作調測,再針對電路不完善部分進行弁酯蚰翰寣A進行電磁干擾訊號實際量測,於抑制或是消除電磁雜訊部分,除符合各種法規要求外,其時程也符合預期要求,對研發時期解決電子醫療產品電磁干擾問題上,能發揮出最佳效用。
This thesis outlines the design and development of filters applies to medical electronic devices, which leads to a better design and rapid development architecture for the inhibition of electromagnetic interference (EMI). The EMI referred included the device induced and those that existed in our environment. The filters have been constructed with the objective of preventing incorrect data acquisitions and measurements due to the EMI and will increase the reliability and precision of such devices.
A comprehensive introduction of the EMI induced noise and their transmission route is revealed along with a thorough analysis and configuration of an existing consumer product. The new method proposed has greatly reduced the time required for research and design resulting from the fact that adjustments to eliminate noise would no longer be necessary after the design is completed. Recurrent corrections avoided would then accelerate the promotion of the newly designed device into the consumer market.

The implemented filter undergoes laboratory tests, simulations and functional corrections in order to meet all EMI regulations. The final product not only meets the anticipated results, but also gives designers in the field of medical electronic devices a better solution for EMI reductions.
第一章 緒論 .......................................... 1
1.1簡介 .............................................. 1
1.2研究動機 .......................................... 2
1.3研究目的 .......................................... 3
1.4研究方法 .......................................... 6
1.5論文架構 .......................................... 7
第二章 雜訊的產生與傳送 .............................. 8
2.1雜訊的傳送路徑 .................................... 8
2.1.1傳導性雜訊 ...................................... 9
2.1.2輻射性雜訊 ...................................... 9
2.1.3雜訊傳送 ........................................ 9
2.2傳導雜訊的分類 .................................... 10
2.3雜訊的單位 ........................................ 12
第三章 傳導型電磁干擾的量測 .......................... 13
3.1儀器介紹 .......................................... 13
3.1.1峰值測量接收器 (Peak value detector) ............ 13
3.1.2準峰值測量接收器 (Quasi-Peak value detector) .... 13
3.1.3平均值測量接收器 (Average value detector) ....... 15
3.1.4頻譜分析儀和掃瞄式接收機 ........................ 15
3.1.5電源阻抗穩定網路(LISN)架構及作用 ................ 16
3.2電磁干擾的規範 .................................... 19
3.2.1美國聯邦通訊委員會規範 .......................... 20
3.2.2國際無線電波干擾委員會規範 ...................... 22
3.2.3中華民國國家標準(CNS) ........................... 23
3.2.4量測電磁干擾的配置 .............................. 24
3.3必v分離器工作原理與使用 .......................... 25
第四章 電源濾波器設計 ................................ 29
4.1電磁干擾濾波器架構及元件弁?...................... 29
4.1.1共模電感 ........................................ 29
4.1.2差模電感 ........................................ 30
4.1.3 X電容 .......................................... 31
4.1.4 Y電容 .......................................... 32
4.2電磁干擾濾波器共模、差模等效電路 .................. 33
4.3電磁干擾濾波器的設計方式 .......................... 36
第五章 電磁干擾雜訊波形預測與驗證 .................... 40
5.1工作原理 .......................................... 40
5.2實驗步驟 .......................................... 44
5.3實驗結果 .......................................... 47
第六章 總結 .......................................... 58
6.1 結論 ............................................. 58
6.2其它降低電磁干擾問題之技術 ........................ 59
6.3未來研究方向 ...................................... 61
參考文獻 ............................................. 62
附錄 ................................................. 67
A雜訊限制值 ...................................... 68
B量測場地配置圖 .................................. 76
C使用設備 ........................................ 80
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[8] Caponet, M.C.; Profumo, F.; Tenconi, A.;"EMI Filters Design for Power Electronics",Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual , Volume: 4 , 23-27 Pages:2027 – 2032 2002
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