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Calculation of One-Valued Control Limits by Control Chart of Angles |
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| Abstract: | The data we use to express angle or direction are entitled directional data. In a plan right-an-gled coordinate system the traditional control chart can't solve the quality control problem which the characteristic value is angle. This paper analyses and calculates the one-valued control limits by control chart of angles. |
| Keywords: | control chart angle directional data |
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