Performance Evaluation for a Contactless Micro Vibration Isolator Using the Flux Pinning Effect

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  • Shibata Takuma
    連絡先著者（Corresponding author）：ts761943is_as@ac.jaxa.jp 総合研究大学院大学
  • Sakai Shin-ichiro
    宇宙航空研究開発機構/宇宙科学研究所

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Other Title
  • 磁束ピンニング効果を用いた非接触微小擾乱抑制機構のための基礎特性評価
  • ジソク ピンニング コウカ オ モチイタ ヒセッショク ビショウ ジョウラン ヨクセイ キコウ ノ タメ ノ キソ トクセイ ヒョウカ

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<p>Micro vibrations and heat generated by reaction wheels and a refrigerator cause a problem in observing stars or galaxies with high pointing accuracy. Several methods have been proposed for reducing the influence of the vibration. However, these methods are difficult to cut low frequency band off passively. In addition, thermal strain on a primary mirror decreases the pointing accuracy when the heat transmits to a mission part through conventional vibration isolator. A vibration isolator using the flux pinning effect is proposed for solving the problem in this paper. The pinning force can maintain the relative distance and attitude between a type-II superconductor and a magnet without control. The spring and damping characteristics of the pinning force is applied to suppress the vibration effect. A mission part and bus part is not connected mechanically but electromagnetically, therefore it is expected that the influence of the heat transfer can decrease. Results of numerical analysis and experiment are given for discussing the feasibility of the proposed mechanism. </p>

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