A Method of Detecting Abnormal Signals by Wavelet and Adaptive Digital Filter.

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  • ウェーブレットと適応ディジタルフィルタによる異常信号の検出法
  • ウェーブレット ト テキオウ ディジタル フィルタ ニ ヨル イジョウ シンゴ

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Abstract

A method of detecting abnormal process signals in fault diagnosis by wavelet analysis and adaptive digital filter is developed. The method proposed in this study has the advantage of detecting on-line abnormal signals in industrial use. It was applied to abnormal detection of the 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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