在第二阶段评估DEWMA3的性能,以捕捉基于运行规则机制的简单线性配置的变化
Rehan Ahmad Khan Sherwani1, Humaira Qasim1, Shumaila Abbas1
1College of Statistical and Actuarial Sciences, University of the Punjab, Lahore, Pakistan.
Scientific reports
|May 27, 2023
概括
本研究引入了统计过程控制 (SPC) 的新运行规则方案,以检测线性质量配置文件的变化. R2/3 方案在快速准确地识别过程偏差方面表现出卓越的性能.
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:
- 统计过程控制 (SPC) 方法对于随着时间的推移监测过程稳定性至关重要.
- 检测线性质量配置文件的变化,包括斜率和截面,对于保持工艺质量至关重要.
研究的目的:
- 调查线性配置文件中响应和解释变量之间的关系,以增强变化检测.
- 将使用DEWMA统计数据的三种第二阶段方法与新运行规则方案 (R1/1,R2/3,R3/3) 的有效性进行比较.
主要方法:
- 采用解释变量的转换来确保独立的回归估计.
- 使用R-Software中的蒙特卡洛模拟来评估基于平均运行长度 (ARL) 的性能.
- 评估了拦截,斜率和标准偏差的变化检测,考虑到错误报警率.
主要成果:
- 拟议的运行规则方案显著提高了控制结构的检测能力.
- R2/3方案表现出最佳性能,提供快速检测过程偏差.
- 与其他评估方法相比,R2/3方案显示出优越性.
结论:
- 开发的运行规则方案增强了对线性质量配置文件的流程监控.
- 建议使用R2/3方案,因为它具有更高的灵敏度和快速检测不良工艺变化的速度.
- 这些发现通过现实世界的数据应用得到了验证.
相关概念视频
01:12Differential Leveling
228
Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...
228
01:05Difference from Background: Limit of Detection
6.7K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
The LOD indicates the presence or absence...
6.7K