Method for controlling a manufacturing process utilizing control charts with specified confidence intervals
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United States of America Patent
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Oct 29, 2002
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N/A
app pub date -
Nov 20, 1996
filing date -
Nov 20, 1996
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Abstract
The invention discloses methodology for qualitatively extending and exploiting the utility of presently known manufacturing control charts. The method introduces a separate control mechanism comprising establishing confidence intervals to already existing control limits. The confidence intervals, in turn, can be used in presently known control charts to take into account an otherwise uncertainty in a generation of the control limits themselves, thereby increasing the accuracy and robustness of decisions based on the use of the control charts.
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