預估工程變更開始生效日之決策模型

An Effectivity Date Decision Model for Engineering Changes

劉希哲(Shi-Zhe Liu)

指導教授 ： 蕭俊彥

中原大學/工學院/工業工程研究所/碩士(2008年)

https://doi.org/10.6840/CYCU.2008.00385

摘要

產品開發設計是以企業感受到市場機會為開端，透過需求分析、設計、生產、到銷售後結束，全球化的競爭環境使得產品變化快速，其生命週期日益縮短，在產品生命週期中，製造現場如果發生現場物料短缺須使用替代料或伴隨者機器製程的改變，將會對該產品提出工程變更。工程變更發生時，設計端須修改變更相關設計文件，製造端則是採購的重新考慮或是機器的重新安排調度等。處理工程變更須花費不少的時間與成本，一個工程變更可以實施的時間(Effective Date)，表示產品設計文件修改完成，工作現場可依據新的設計進行產品製造的時間，決定工程變更可以實施的時間，稱為開始生效日(Effectivity Date)的訂定。開始生效日訂定所需考量的相關決策因素橫跨設計端到製造端，本研究將建立一個混合整數規劃(Mixed Integer Programming)的決策模型，輔助工程變更發生時能同時考慮設計端產品的新版文件何時之前須產生，以及製造端新舊版產品排程規劃，在滿足呆料最少，設計人員和現場機器空閒時間最少及最接近客戶交期完工的目標下，找出各變更的較佳開始生效日。

關鍵字

產品資料管理 ； 組態管理 ； 工程變更

並列摘要

For enterprise, market opportunities often initialize lifecycle of a new product development. The cycle then follows by requirement analysis, design, production, and finalized with marketing. Globalized competitive environment has increased the turnover rate of products. To keep up with the fast paste, the product lifecycle time is becoming shorter and shorter. During the production cycle, when an approved engineering design is not able to be manufactured with current materials and/or equipments, an engineering change (EC) is required. When EC occurs, the design end needs to change all the related design documents, and the production end needs to reevaluate material purchasing plan and equipments scheduling. All these are time and cost consuming.
Effective date is the date that a documented change is implemented and applied to shop floor workshop. Effectivity date is the date that decision makers wish documented changes begin to applied. In normal situations, multiple disciplines, such as design and development, purchasing, shop floor workshop, quality control, and so on, are involved in a change decision, which will be made on when a change is to become effective.
In this thesis, a mixed Integer programming effectivity decision model is proposed to support changes of the design and production ends synchronously when an engineering change occurred. The proposed model succeeds in an integration of the change management problems (from PDM perspective) and production planning and shop floor scheduling problems (from ERP perspective).

並列關鍵字

Engineering Change ； Configuration Management ； Product Data Management

參考文獻

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