Fault Diagnosis and Isolation of Multi-Input-Multi-Output Networked Control Systems

Yingwei ZHANG*, Jie SHENG, S. Joe QIN, Tim HESKETH

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

10 Citations (Scopus)


In this article, we consider a type of multi-input-multi-output networked control systems (NCSs) in which the network-induced time delays for different inputs are different. For those unstable and/or poorly damped eigenvalues, we propose a reduced-order memoryless state observer design approach. The full-order state vector of the original systems using the reduced-order observer is reconstructed. We prove that the γ-stability of the state error dynamics can be guaranteed. Meanwhile, by computing the residual between the output of the practical systems and the output of the reduced-order observer, the fault-detection scheme of the NCSs is given. An illustrative example shows the effectiveness of the proposed method. © 2008 American Chemical Society.
Original languageEnglish
Pages (from-to)2636-2642
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Issue number8
Early online date14 Mar 2008
Publication statusPublished - Apr 2008
Externally publishedYes


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