生產系統檢驗站設置問題之研究

A Study of Inspection Stations Allocation Problem of Production Systems

朱育宏(Yung-Hung Chu)

指導教授 ： 饒忻

中原大學/工學院/工業工程研究所/碩士(2001年)

https://doi.org/10.6840/cycu200100455

摘要

生產系統中設置檢驗站是控制品質與節省成本的好方法，但在何處設置檢驗站使各項成本達到平衡是管理者的一大挑戰。檢驗站設置問題之文獻，大多探討序列式生產系統，以再回流式生產系統為研究範圍的則不多見。但現今產業的生產型態除了傳統之序列式生產系統，也有更為複雜的再回流式生產系統，再回流式生產系統有別於序列式生產系統會對工件逐層進行加工，因此本研究分別建立序列式及再回流式生產系統之檢驗站設置方案求解模式，期望使生產獲利達到最高。本研究所發展之數學模式具有高度的延伸性及適用性，模式中參數經適當的調整後即可適用於具有不同特性之生產系統。檢驗站在考慮兩種檢驗誤差下採用全檢或不檢兩種檢驗水準，在再回流式生產系統之檢驗站設置方案求解模式中，更考慮了實際生產狀況而允許在不同生產階段從事不同之檢驗，包含加工屬性量測及功能測試。對瑕疵品的處理可分為修理、重作以及報廢，重作可依其瑕疵發生原因回至該加工站進行。所有工作站之後皆有可能設置檢驗站，因此當工作站數增加時，窮舉法的求解時間會急劇的成長，因此本研究利用數學模式的特性發展了啟發式解法，並舉例驗證啟發式解法的效率及品質。
關鍵詞：序列式生產系統、再回流式生產系統、檢驗站設置

關鍵字

序列式生產系統 ； 檢驗站設置 ； 再回流式生產系統

並列摘要

Inspection is good for quality control and cost saving in production systems. It is a great challenge for managers to decide locations of inspection activities. Most of literatures considered multistage serial production systems; however, in the recent decades, reentrant production systems with higher complexity emerge. One of the most important characteristics of reentrant production systems is that the work units would be manufactured layer by layer and mostly each layer processes through the same machines. In this research, two mathematical models are developed to find the optimal inspection policies with the lowest production cost for both multistage serial production systems and reentrant production systems. The models are highly extensible and applicable; with properly modifying the factors, the models can be applied to different production systems. We considered all or none inspection levels for each workstation with two types of inspection errors. There are three possibilities for the treatment of detected nonconforming units: repair, rework and scrap. Units that need to be reworked would be sent back to workstations according to its defect. Because there is a potential allocation of inspection station behind each workstation, as the number of workstations increases, the problem size increases exponentially. In order to save the computation time, a heuristic solution method based on the characteristics of the mathematical model is developed, and it has a better result compared with the optimization method based on the complete enumeration.

Keywords: Serial production system, reentrant production system, inspection station allocation

並列關鍵字

Serial production system ； reentrant production system ； inspection station allocation

參考文獻

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