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Title:Fault detection of an industrial heat-exchanger : a model-based approach
Authors:ID Dragan, Dejan (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-6MTJETTR
 
Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:FL - Faculty of Logistic
Abstract:One of the key issues in modelling for fault detection is how to accommodate the level of detail of the model description in order to suit the diagnostic requirements. The paper addresses a two-stage modelling concept to an industrial heat exchanger, which is located in a tyre factory. Modelling relies on combination of prior knowledge and recorded data. During the identification procedure, the estimates of continuous model parameters are calculated by the least squares method and the state variable filters (SVF). It is shown that the estimates are largely invariant of the bandwidth of the SVFs. This greatly reduces the overall modelling effort and makes the whole concept applicable even to less experienced users. The main issues of the modelling procedure are stressed. Based on the process model a simple detection system is derived. An excerpt of the results obtained on operating records is given.
Keywords:industrijski prenosniki toplote, zaznavanje napak, nadzor procesov, odkrivanje napak na osnovi modela, modeliranje, identifikacija, industrial heat exchanger, fault detection, condition monitoring, model-based detection, modelling, identification
Publisher:= Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:2011
Number of pages:str. 477-484
Numbering:Vol. 57, no. 6
PID:20.500.12556/DKUM-52282 New window
UDC:66:681.5:519.8
ISSN on article:0039-2480
COBISS.SI-ID:512232253 New window
DOI:10.5545/sv-jme. 2010.128 New window
NUK URN:URN:SI:UM:DK:UKJKEFM2
Publication date in DKUM:10.07.2015
Views:1878
Downloads:30
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
DRAGAN, Dejan, 2011, Fault detection of an industrial heat-exchanger : a model-based approach. Strojniški vestnik [online]. 2011. Vol. 57, no. 6, p. 477–484. [Accessed 21 January 2025]. DOI 10.5545/sv-jme. 2010.128. Retrieved from: http://www.dlib.si/details/URN:NBN:SI:doc-6MTJETTR
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:a model-based approach
Abstract:Pri razvoju matematičnih modelov za potrebe detekcije in odkrivanja napak je zelo pomembna odločitev, kako podrobno naj model opisuje detajle procesa, da bi bile kar najbolj optimalno izpolnjene diagnostične zahteve. Prispevek obravnava dvofazni koncept modeliranja industrijskega toplotnega izmenjevalnika, ki je sestavni del procesa sežiganja vulkanizacijskih plinov v tovarni gum. Modeliranje temelji na kombinaciji teoretičnih fizikalnih znanj in posnetih podatkov iz procesa. Tekom postopka identifikacije so ocenjeni zvezni parametri modela s pomočjo metode najmanjših kvadratov in filtrov spremenljivk stanj. V prispevku je pokazano, da so ocenjeni parametri v veliki meri neodvisni od pasovne širine filtrov stanj. To je zelo pomembna ugotovitev, saj se na njeni osnovi lahko bistveno zmanjšajo napori v celotnem konceptu modeliranja, celo tudi za manj izkušene raziskovalce. V prispevku so podani vsi osnovni koraki postopka modeliranja. Pokazano je tudi,kako lahko na osnovi izpeljanega modela toplotnega izmenjevalnika razvijemo in uporabimo relativno preprost detekcijski sistem, ki nam pomaga detektirati napake v procesu. Kot kažejo rezultati na osnovi realnih podatkov iz procesa, je razviti detektor na osnovi modela sposoben izredno učinkovito detektirati različne tipe napak na opremi toplotnega izmenjevalnika.


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