為了確保產品品質能長期符合消費者的需求，如何進行一套有效的篩選程序 (Screening Procedure) 以及評估通過篩選程序之產品壽命，是所有製造商或生產者皆需面臨的重要決策問題。針對高可靠度產品，若存在一與壽命具高度相關之品質特徵值 (Quality Characteristic，簡稱QC)，且假設該產品品質特性之衰變路徑服從一Wiener 過程，Tseng & Tang (2001) 曾由成本觀點，建構出一套有效的篩選程序，以決定一最適預燒(burn-in)時間。然而此篩選程序當產品品質特徵值衰變緩慢時，將無法於短時間內順利地篩選出不良產品。
為克服上述困難，本論文將引進連續加速應力的概念，建構出一新的篩選法則，以期能迅速縮短篩選試驗時間，達到篩選良莠之目的。最後本研究將比較此篩選法則與Tseng & Tang (2001) 與彭健育 (2002) 方法上之優劣，詳細說明此三種法則之錯誤分類機率與其成本的差異，並說明此三種方法的使用時機與範圍限制。

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