基于Taguchi过程能力指数的合格率评价  

Proportion Conformance Evaluation Based on the Taguchi Process Capability Index

作　　者：杨剑锋[1] 徐济超[2] 常广庶[1] 贺金凤[1] 王海宇[1] 

机构地区：[1]西北工业大学管理学院,陕西西安710072 [2]郑州航空工业管理学院质量工程研究所,河南郑州450015

出　　处：《系统工程》2005年第8期99-103,共5页Systems Engineering

基　　金：国家自然科学基金委杰出青年基金资助项目(70125004);国家自然科学基金资助项目(70072029)

摘　　要：在制造工业的质量管理中,过程能力分析(PCA)被广泛地运用于生产制造领域的工序和过程的质量改进活动和供应商评估中。过程能力指数(PCI)是判断过程是否有能力满足质量规格要求的评价指标。由于传统的质量思想和管理方式,合格率仍是评价质量水平的重要指标。尽管TaguchiPCI基于现代质量管理思想具有更好的评价特性,但是由于通过TaguchiPCI不能直接估计过程输出的合格率,因此没有得到广泛运用。本文通过建立TaguchiPCI与质量损失的关系,消除了TaguchiPCI广泛采用的主要障碍。本文建立了指数Cpm与合格率的函数关系并提供参考表,并讨论了TaguchiPCI在过程连续质量改进活动中的作用和相对于传统的PCI的优势。The Process Capability Analysis is widely used in the quality assessment for internal processes and suppliers of quality management in the industry. Process Capability Index （PCI） is the index to evaluate whether the process capability satifies customer need or technical specifation. But the proportion conformance is still an important index for the evaluation of quality level becasue of classical quality philosophy and management manner. The Taguchi PCI has been not widely utilized in despite of its better particularity based on advanced quality philosophy. Because the proportion conformance cannot be estimated directly through the Taguchi PCI. The paper discusses the relation between the Taguchi PCI and quality loss, and eliminats the main barrier for utilise widely utilisation. Their function relation and reference tables are showed in the paper. The Taguchi PCI＇s effects and advantages relative to classical PCIs in the continous process quality improvement are discussed.

关 键 词：Taguchi质量损失函数 过程能力指数 合格率评价 连续质量改进 

分 类 号：O213[理学—概率论与数理统计]