https://scholars.lib.ntu.edu.tw/handle/123456789/81985
標題: | 供應鏈動態事件協同控制之資訊價值分析 Analysis of state information in collaborative control of dynamic events in manufacturing chains |
作者: | 李慧婷 Lee, Hui-Ting |
關鍵字: | 動態系統;流體模型;資訊價值;system dynamics;fluid models of supply chains;information value | 公開日期: | 2006 | 摘要: | 供應鏈在產品需求或是製造流程面臨著許多不確定性,節點工廠為了減緩變異所帶來的衝擊,大都會採用不同控制策略來因應,如調整產能或投料等,但若供應鏈的節點仍是各自為營,即使每個節點的利益都達到最佳化還是無法提高整體供應鏈的效益,因此節點工廠應該要透過協同合作以降低營運成本。不同於文獻中需求鏈的資訊分享,本研究主要目的為探討生產供應鏈中的節點,應用生產狀態資訊之分享方法,包括在製品存貨資訊和節點投料資訊等,藉以降低整體供應鏈的存貨成本。 本研究首先使用流體模型來建構單一節點的生產行為模式,即以微分方程式表示在製品在供應鏈之中流動速率與生產決策的關係,並且考慮流程的時間遞延以及重製事件對生產製造的影響,進而提出節點於滿載時發生重製事件的線性產能調整策略,其次,根據此動態模型,建立兩節點的供應鏈,分析兩節點對彼此狀態資訊的最佳應用方法,並提出評估資訊價值的代理指標,由此指標可以得知狀態資訊對節點和供應鏈的價值,最後,以非線性規劃法探討供應鏈使用狀態資訊的最佳協同合作之策略。本文所建構的流體模型可提供工廠控管動態事件的設計工具,而所描述的生產資訊分享之價值可作為製造供應鏈之廠商於協同合作時的基礎應用。 Supply chains are full of dynamic events arising from demand uncertainty and process problems. To mitigate the impact of dynamic events, various control methods are usually used by production units, such as active flexible capacity or adjusting release rate. However, performance optimization of individual units does not guarantee the best outcome for the supply chains. Supply chain performance can be improved by collaboration. The focus of this research work is on how manufacturing chains can utilize the state information of production to enhance the performance of supply chains. This thesis is composed of three parts. First, continuous fluid models are used to model production behavior of individual nodes. Flow time delays and rework events are taken into account in the dynamic model. A linear control method for capacity adjustment is developed to stabilize the system when a node encounters rework events during a full-load situation. Second, a framework is presented for analyzing the use of the state information in supply chain collaboration and a surrogate measure is proposed for valuing the state information. Finally, a nonlinear programming model is described for optimizing production decisions in supply chain collaboration. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/51249 | 其他識別: | zh-TW |
顯示於: | 工業工程學研究所 |
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ntu-95-R93546027-1.pdf | 23.53 kB | Adobe PDF | 檢視/開啟 |
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