論文提要內容:
對於改善產品品質而言，製程管制一直為工業界所採用，而一般所用之製程管制的手法，不外乎統計製程管制(SPC)和工程製程管制(EPC)兩種，其中統計製程管制最常用者為管制圖之運用，用來監控製程是否有異常之現象發生，並且找出原因加以消除；而工程製程管制則利用對輸入變數適當之調整來控制製程產出使製程產出趨於穩定性，綜觀以上兩種製程，雖然分別運用在不同的製程形態上，然而隨著產業的脈動，科技的進步，產品已具多元化，產品製程已經不再僅侷限於一種製程上，因此在提升線上製程管制的能力上，已出現兩種製程整合的概念。
Ingolfsson和Sachs(1993)將統計製程管制之技術與回饋系統之技術相結合而發展出R2R控制系統，對於藉由調整製程的輸入變數，來管制製程產出的穩定性而言，其所使用之回饋控制方法為指數加權移動平均，所以我們針對在R2R回饋控制系統中之回饋控制器加以探討，我們選擇比例積分控制器做為系統之回饋控制器，探討比例積分控制器對製程穩定性的效能，並且各種不同干擾型態之製程下以比例積分控制器做為製程之輸入變數，對於其參數的選取問題進一步作探討。

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