有限要素法に基づくスピーカ磁気回路の音圧ひずみ低減 Reduction of Sound Distortion for a Magnetic Circuit in a Loudspeaker Based on Finite Element Analysis

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A new magnetic circuit for a low distortion loudspeaker has been studied using a finite element analysis considering a minor hysteresis loop. The magnetic materials in the vicinity of the voice coil are magnetized by fields both AC currents and a permanent magnet. A minor hysteresis loop is induced by this magnetization. The incremental permeability of minor hysteresis loop effects on the sound distortion. We calculated the flux distribution of the magnetic circuit using a finite element method, considering the incremental permeability of the minor hysteresis loop obtained by an experimental method. It is clarified the relation between the sound distortion caused by the flux distribution and the magnetic structure. The developed magnetic circuit has a pole piece which has a hole at the upper surface and which is located higher than the plate.

収録刊行物

  • 電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society  

    電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society 126(5), 379-384, 2006-05-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10018111203
  • NII書誌ID(NCID)
    AN10136312
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03854205
  • NDL 記事登録ID
    7946886
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-793
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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