A Study of Improving Process Capability by Integrating Loss Functions and Two Kinds of Process Capability Index
| Autor: | Chang-Jung Kao, 高章榮 |
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| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 Promotion of the quality depends on the proper regulation management and applicable process quality evaluation. Process Capability Index (PCI) is a valid and convenient process evaluation tool, in which the manufacturing industries have continuously tried to adapt the PCI to an actual application and then to establish a suitable PCI evaluation model. In the actual analysis, it seems only to limit the standpoint of process technique and lack of the quantitative explanation of cost in persuasion of real quality promotion. The results of improvement to evaluation should improve the concept that can immediately reduce the product cost through the process improvement and promote the product competition ability in the market, which in turn will urge the top executive to deeply value the significance of quality improvement and support with all strength. This thesis makes use of Quadratic Loss Function concepts and the conduct of the basis of measuring the product quality by way of cost loss. Through a diagnosis theory of Two Kinds of Process Capability Index, the front and back process influence extent is evaluated with putting forward the whole process improvement mode. It is expected to achieve the following three goals: （1）Combining PCI and cost loss concept to analyze the process improvement performance and provide cost analysis for manager ; （2） Make use of Two Kinds of Process Capability Index theory to find the key of process improvement and the range of process capability promotion; （3）To establish a process analysis mode for matching an actual application of industry to present more economical performance. This thesis physically has identified the lithium battery’s manufacturing process as a target of study, which can put forward to the key of process improvement and the quantification of cost loss. After improvement action being taken, the results have clearly demonstrated that the process capability has already been promoted and the loss cost has also reduced. The present thesis has confirmed to meet the target of the expectation after inquiring into a physical identification through several individual cases. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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