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新的适应性EWMA CV控制图表适用于烧结过程
Sadaf Ayesha1, Asma Arshad1, Olayan Albalawi2
1Department of Statistics, National College of Business Administration and Economics, Lahore, Pakistan.
Scientific reports
|May 21, 2024
概括
本研究引入了适应指数加权移动平均线 (EWMA) 控制图,用于监测变化系数 (CV). 新的AAEWMA CV图有效地检测不稳定的生产过程中不经常发生的CV变化.
科学领域:
- 工业工程 工业工程 工业工程
- 统计质量控制 统计质量控制
- 过程监控 过程监控
背景情况:
- 使用变化系数 (CV) 监测相对过程变化对于长期生产观测至关重要,特别是使用不稳定的介质.
- 现有的指数加权移动平均线 (EWMA) 图表在检测过程CV中不经常发生的变化时可能缺乏灵敏度.
- 适应性控制图表在检测过程转移方面提供了潜在的改进.
研究的目的:
- 为变化系数 (CV) 监测开发和评估一种新的修改自适应指数加权移动平均线 (AAEWMA) 控制图.
- 提高工业环境中罕见的过程CV变化的检测.
- 提高现有的适应性EWMA CV图表的有效性.
主要方法:
- 开发一种新的自适应功能,以根据估计的CV转移大小调整平滑常数.
- 使用蒙特卡洛模拟方法计算效率分析的运行长度值.
- 应用一个工业数据示例来证明图表的实际实施和有效性.
主要成果:
- 拟议的AAEWMA CV控制图表表现出与现有的AEWMA CV图表相比更高的效率.
- 适应功能有效地调整平滑常数,改善检测不频繁的CV转移.
- 模拟结果证实了AAEWMA CV图表在识别过程可变性变化方面的增强性能.
结论:
- 新型的AAEWMA心血管控制图在监测相对过程变异性和检测罕见的心血管变化方面非常有效.
- 适应机制显著提高了EWMA心血管监测图表的灵敏度和性能.
- 强烈建议在工业质量控制中实施AAEWMA CV图.
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