利用超額存貨資訊強化生產控制

Abstract

半導體產業的投資成本甚高，因此在眾多不確定性的事件下，進行供應鏈控制更顯得其強烈的必要性。在過去許多文獻中，預知資訊對於改善供應鏈的績效已獲得相當程度的證明。本研究的主要目的是證明以半導體供應鏈的超額存貨資訊進行供應鏈控制是有用的，利用供應鏈的超額存貨資訊建立一個最佳化控制模式強化供應鏈績效監控。本研究主要分為三大部分，首先，回顧預知資訊如何運用在供應鏈管理上之文獻，其次，分析應用供應鏈的超額存貨資訊來進行供應鏈控制的可行性及其效用，最後建立一個流程時間如何在短暫的存貨調整下之暫態行為模式以及最佳化控制的數學模式來描述供應鏈如何在已知超額存貨資訊下進行存貨調整並且以簡單數值範例比較三個具代表性的存貨調整策略來說明可能會有最佳的供應鏈存貨調整策略路徑存在。

As the financial pressure is very high in the semiconductor manufacturing industry, there are strong needs to control the supply chains under uncertainties. Advanced information has been shown in many studies to be effective in improving the operation performance of supply chains. In this thesis, we develop an optimal control model for the semiconductor supply chains by using the advanced information of channel inventory. In the first part of this research, applications of advanced information in supply chain management are reviewed. In the second part, excess channel inventory information of semiconductor microchips and its feasibility and utility as an instrument for supply chain control are analyzed. In the final part, a flow time transient behavior model under short term inventory adjustment and mathematical optimal control model are described which is used to identify the stress point of the supply chains when the channel inventory undergoes adjustment. And using a numerical example to explain and compare three adjustment policies to show there is an optimal strategy of inventory adjustment.