Statistical consideration to a criterion of instability in quality control charts

Bibliographic Information

Other Title
  • 品質管理図における異常判定基準の統計的考察

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Description

The quality in a manufacturing process is usually controlled, using Shewhart control charts (SCC). The phenomena of seven kinds of instabilities observed in SCC are defined in the Japanese Industrial Standards. In this paper, the incidents of the instabilities are statistically calculated. It is found that most instabilities will happen with same probability of nearly one thousands. That is, there is a criterion statistically equal to all instabilities in SCC. It is furthermore discussed that the criterion should be decided with a view to minimum cost. The conditions of instabilities corresponding to suitable criterion are proposed.

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Details 詳細情報について

  • CRID
    1573387451770604928
  • NII Article ID
    110004814501
  • NII Book ID
    AA11499229
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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