工业工程 ›› 2011, Vol. 14 ›› Issue (5): 75-78.

• 专题论述 • 上一篇    下一篇

基于田口质量损失函数的非正态EWMA控制图优化设计

  

  • 出版日期:2011-10-31 发布日期:2011-11-11
  • 作者简介:薛丽(1981-),女,河南省人,博士研究生,主要研究方向为质量管理与工业工程.
  • 基金资助:

    国家自然科学基金资助项目(70771102,71002073);航空科学基金资助项目(2009ZG55019, 2008ZG55019); 河南省高校科技创新人才支持计划项目(2010HASTIT024)

Optimization Design of an EWMA Control Chart for NonNormal Data based on Taguchis Loss Function

郑州航空工业管理学院 管理科学与工程学院,河南 郑州 450000   

  1. School of Management Science and Engineering, Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450000, China
  • Online:2011-10-31 Published:2011-11-11

摘要: 结合随机过程均值偏移的概率分布和田口质量损失函数,研究了非正态EWMA控制图的优化设计问题。利用Burr分布近似各种非正态分布,使田口质量损失函数的总平均值最小进而确定参数的最优值,对比研究表明该方法设计的非正态EWMA(ML-EWMA)控制图明显优于统计方法设计的非正态EWMA控制图,具有较小的质量损失。

关键词: EWMA控制图, 非正态分布, 田口质量损失函数, 随机过程均值偏移

Abstract: The optimization design of Exponential Weighted Moving Average(EWMA) control chart for nonnormal data is addressed. A method that combines Taguchis loss function and the probability distribution of the random process mean shift is proposed. By using the Burr distribution to approximate various nonnormal distributions, the parameter of the EWMA control chart for nonnormal data is determined through minimizing the overall mean value (ML) of Taguchis loss function. Comparative studies show that the proposed MLEWMA control chart for nonnormal data is significantly superior to the statistical EWMA control chart for nonnormal data in terms of the overall loss of ML.

Key words: Exponential Weighted Moving Average(EWMA) control chart, non-normal distribution, Taguchis loss function, random process mean shift