Source identification of plant-wide faults based on k nearest neighbor time delay estimation

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• 作者：Markus Stockmann^a ; ^{markus.stockmann@fh-koeln.de} ; Robert Haber^a ; Ulrich Schmitz^b
• 关键词：Control performance monitoring ; Plant-wide faults ; Fault propagation ; Source identification ; Time delay estimation
• 刊名：Journal of Process Control
• 出版年：2012
• 期刊代码：106_09591524
• 类别：et
• 出版时间：March, 2012
• 卷：22
• 期：3
• 页码：583-598
• 文件大小：2993 K

摘要

The identification of plant-wide faults is a very important topic as it enables plant operators to decrease rejections or to increase the product quality. This paper shows a fault propagation approach for this field of interest based on time delay estimation. Due to the fact that the estimation of time delays in multiple-input single-output systems or nonlinear systems is either impossible or very difficult with known methods, a new method based on k nearest neighbor imputation was developed and is validated in this paper theoretically. The effectiveness of the identification algorithm is demonstrated on several simulations and on an industrial hydrocracker plant.