アトラクタと多重解像度解析による異常信号の検出法

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タイトル別名
  • A Method of Detecting Abnormal Signals by Attractor and Multiresolution Analysis.
  • アトラクタ ト タジュウ カイゾウド カイセキ ニ ヨル イジョウ シンゴウ

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抄録

A method of detecting abnormal process signals in fault diagnosis by attractor and multiresolution analysis is developed. It involves the detection of abnormal signals using an attractor vector norm analysis from an attractor of process signals and the detection of abnormal signals using a multiresolution analysis which decomposes process signals by the multi-decimation method. The method proposed in this study has the advantage of detecting online abnormal signals in industrial use. It was applied to abnormal detection of catalyst feed flow in a linear low-density polyethylene plant to confirm the design philosophy. The actual result indicates that the proposed method is effective in detecting abnormal process signals.

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