摘要
对过程实施统计质量控制的基本假设前提是观测值彼此统计独立 ,但是实际工作中经常出现过程的观测值存在自相关的现象。本文在简单介绍残差控制图的基础上 ,探讨了自相关过程的统计控制状态的含义 ,提出了判断自相关过程是否处于统计控制状态并进而寻找处于统计控制状态下的自相关过程的模型的途径 ,运用示例加以说明。最后给出保持自相关过程的统计控制状态的方法。
Traditional statistical process control (SPC) methodology is based on a fundamen tal assumption that process data are statistically independent.This assumption i s frequently invalid in many manufacturing processes combined with frequent samp ling.This paper introduces the residual chart,discusses the meaning of state in control for autocorrelated process,proposes the procedure of how to diagnose the state in control for autocorrelated process and how to find an exact model to e xpress the process in control,then gives the approach of keeping the autocorrela ted process in control.
出处
《管理工程学报》
CSSCI
2003年第2期75-80,共6页
Journal of Industrial Engineering and Engineering Management
基金
国家自然科学基金项目 (70 0 0 2 0 0 5 )
