Fault Prediction Algorithm for Multiple Mode Process Based on Reconstruction Technique. (9th June 2015)

• Record Type: Journal Article
• Authors: Ma, Jie; Xu, Jianan
• Other Names: Li Gang Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2015(2015)
• Publication Date: 2015-06-09
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2015/348729
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : In the framework of fault reconstruction technique, this paper studies the problems of multiple mode process fault detection, fault estimation, and fault prediction systematically based on multi-PCA model. First, a multi-PCA model is used for fault detection in steady state process under different conditions, while a weighted algorithm is applied to transition process. Then, describe the faults quantitatively and use the optimization method to derive the fault amplitude under the sense of fault reconstruction. Fault amplitude drifts under different conditions even if the same fault occurs. To solve the above problem, consistent estimation algorithm of fault amplitude under different conditions has been studied. Last, employ the support vector machine (SVM) to predict the trend of the fault amplitude. Effectiveness of the algorithms proposed in this paper has been verified using Tennessee Eastman process as the study object.