• 作者： Hwang, Gene-Ware; Lee, Liang-Sun
• 中文摘要： 本文對動態回流程序之失常診斷,以有號有向圖形模式為基礎,加進遲延分析以提高診斷之鑑別力及可靠度。我們根據化工程序之特性,擬定明確之假設,推論其數學性質,並提出診斷之計算方法。為應用在大規模之程序,診斷方法中包含兩種分割步驟:強連結成分之劃分及連續未測變數之未分岔路徑,可縮小失常起因之搜尋空間。此外,本文提出之正負一致性及遲延一致性可減少未測變數狀態之反覆猜測及可能起因之候選者數目。
• 英文摘要： In this paper, a diagnostic method is proposed to locate the failure origin of a process. The dynamic process with faults is modeled by a signed-directed graph with delays. Only delays of interactions between measured variable pairs are needed in our algorithm, and several assumptions including unbiased sensor indication, single failure origin, constant signs of interactions, constant delays, and unity probability of fault propagation, are assumed in our method. The presented method consists of two decomposition steps: strongly connected component and combination of successive unmeasured variables in unbranched paths; the decomposition procedure can improve the computational efficiency. Several useful properties on signed digraph, such as successor consistency and delay consistency, are proposed in this paper to reduce the iterated guesses for unmeasured variable and the number of candidates for failure origin.
• 中文關鍵字： 錯誤診斷; 有向有號圖形; 正負及延遲一致性; 分辨力; 程序異常; 可靠度
• 英文關鍵字： Fault Diagnosis; Signed-Directed Graph; Sign And Delay Consistency; Resolution; Process Failure; Reliability