Volume 32 Issue 09
Sep.  2006
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Zhu Wei, Li Yuansheng. Evaluation on distribution of measured characteristic with asymmetric tolerances[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(09): 1121-1124. (in Chinese)
Citation: Zhu Wei, Li Yuansheng. Evaluation on distribution of measured characteristic with asymmetric tolerances[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(09): 1121-1124. (in Chinese)

Evaluation on distribution of measured characteristic with asymmetric tolerances

  • Received Date: 27 Oct 2005
  • Publish Date: 30 Sep 2006
  • The quality of a process or product was studied based on the center of the specification interval in the conventional SPC but on target value, which led to inadequate measure of the quality under the condition of asymmetrical tolerances. In terms of this problem, the quality of a process or product was analyzed based on target value when the process was characterized by normal distribution or piecewise normal distribution. Taguchi quality loss function was applied to describe product value. To compare the process-and product-quality for the measured characteristic with the above two distributions, the expected value of product value was given. Results demonstrate that the quality of a process or product for the measured characteristic with piecewise normal distribution is better than that with normal distribution.

     

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