印刷電路板 (Printed Circuit Board, PCB) 在電子產業供應鏈中屬於不可或缺的一環，因其功能主要在於提供電子零組件安裝與互連時的主要支撐體，而在經歷 2008 年的金融海嘯風暴後，使得產業外在環境產生劇烈之變化，因此為了企業的永續發展，各同業無不以符合客戶需求標準 (品質、交期…等) 當作營運之最高準則，而在這個準則下，如何發揮工廠的最高效率進而降低成本成為首要之課題。
本研究嘗試以限制理論 (Theory of Constrains, TOC) 為基礎，並以最大產出為績效指標，再搭配上印刷電路板廠作為實例來進行生產排程之實驗研究，本研究在實驗階段一是以限制理論之「鼓–緩衝–繩」(Drum-Buffer-Rope, DBR) 排程規則來針對某印刷電路板廠作改良，修改其生產排程派工之順序，並與其目前現行之 EDD 排程規則來作為比較，而實驗階段二則是以限制理論如何持續改善為概念如何繼續提昇系統效能來進行分析研究。
經過本研究之實驗證實 DBR 排程規則其模擬結果，不管在完成時間、平均流程間及限制產能資源工作佔之稼動比率…等績效指標均優於 EDD 排程規則，進而增加 PCB 廠之有效產出，並藉由實驗結果提出相關結論與建議，以提供 PCB 廠於生產排程作業時、日後擴建產能或是建置新廠時之參考。

Printed Circuit Board (PCB) plays an essential role in the electronic industry supply chain, since it functions as the major support in the installment and mutual connections between electronic components. After the global financial crisis that hit the world in 2008, the external industry environment has been became fierce change. All of electronic industries faced to pay more attention to the customer requirement standards for their future operation of sustainability, such as product quality and delivery date. Under the criterion, the issues of how to trigger the most efficiency of factories with the lower production cost comes into the first priority.
The Theory Of Constrains (TOC) was tried to apply to simulate a maximum output for the production performance target in an electronic factory. The selected E Company with producing PCB components is a case study. The experimental researches were run for various production schedules. Firstly, the Drum-Buffer- Rope (DBR) scheduling was used to improve the current scheduling. A comparision result was also obtained with the existing Earliest Due Date (EDD) scheduling. Secondly, we used the TOC to analyze how the production system performance can be improved and promoted for the case study.
It was clarified from the results of the simulation experiment in the study. We found that the DBR scheduling is better than the EDD scheduling on the dimensions of completion time, average flow time and overall equipment effectiveness. The conclusions can be referred to the PCB industries in their production scheduling, capacity enlargement as well as the new plants establishment in the future.

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