Detection and Spatial Identification of Fault for Parabolic Distributed Parameter Systems

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

5 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)7300-7309
Journal / PublicationIEEE Transactions on Industrial Electronics
Volume66
Issue number9
Online published31 Oct 2018
Publication statusPublished - Sep 2019

Abstract

In this paper, a novel method is developed to detect fault and identify its spatial location for a class of parabolic distributed parameter systems (DPSs) with limited sensors. The normal situation of the DPSs is first modelled under limited sensors. Then the spatio-temporal dynamics of DPSs is decoupled under time/space separation. After the temporal coefficients are further decomposed using the independent component analysis (ICA) method, the dominant temporal components are taken and then the spatial residual errors are used to form two monitoring statistics. Through the kernel density function, the confidence bounds of these two statistics (fault-free) can be established as the reference signals. Unlike model-based fault detection methods that require explicit mathematical models of the processes, the proposed method is data-driven and only utilizes the separable characteristic of parabolic DPSs. Experiments on a typical parabolic process and a snap curing oven are used to verify the effectiveness of the proposed method.

Research Area(s)

  • Distributed Parameter Systems (DPSs), Fault Detection, Fault Diagnosis