当前位置: X-MOL 学术Qual. Reliab. Eng. Int. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The extended homogeneously weighted moving average control chart
Quality and Reliability Engineering International ( IF 2.3 ) Pub Date : 2021-02-03 , DOI: 10.1002/qre.2849
Vasileios Alevizakos 1 , Kashinath Chatterjee 2 , Christos Koukouvinos 1
Affiliation  

Control charts are widely applied in many manufacturing processes to monitor the quality characteristic of interest. Recently, a homogeneously weighted moving average (HWMA) control chart was proposed as an improvement of the exponentially weighted moving average (EWMA) chart for efficiently monitoring of small shifts in the process mean. In the present article, we extend the HWMA chart by imitating exactly the double EWMA (DEWMA) technique. The proposed scheme is regarded as double HWMA (DHWMA) control chart. The run-length characteristics of the proposed chart are evaluated by performing Monte Carlo simulations. A comparison study versus the EWMA, DEWMA, HWMA, mixed EWMA cumulative sum (CUSUM), CUSUM, and GWMA charts indicates that the DHWMA chart is more effective in detecting small to moderate shifts, while it performs similarly with its competitors for large shifts. We also study the robustness of the proposed chart under several nonnormal distributions, and it is shown that the DHWMA chart is in-control robust for small values of the smoothing parameters. Finally, two examples are given to demonstrate the implementation of the proposed chart.

中文翻译:

扩展的同质加权移动平均控制图

控制图广泛应用于许多制造过程,以监控感兴趣的质量特性。最近,提出了均匀加权移动平均 (HWMA) 控制图作为指数加权移动平均 (EWMA) 图的改进,用于有效监控过程平均值的小变化。在本文中,我们通过精确模仿双 EWMA (DEWMA) 技术来扩展 HWMA 图。所提出的方案被视为双HWMA(DHWMA)控制图。通过执行蒙特卡罗模拟来评估所提议图表的运行长度特性。与 EWMA、DEWMA、HWMA、混合 EWMA 累积总和 (CUSUM)、CUSUM 和 GWMA 图表的比较研究表明,DHWMA 图表在检测小到中等变化方面更有效,而它在大班次中的表现与竞争对手相似。我们还研究了所提议图表在几种非正态分布下的稳健性,结果表明 DHWMA 图表对于平滑参数的小值具有控制稳健性。最后,给出了两个例子来演示所提出的图表的实现。
更新日期:2021-02-03
down
wechat
bug