Forecasting the global and partial system condition by means of multidimensional condition monitoring methods

• Autorzy: Cempel C.

Warianty tytułu

PL

Prognozowanie globalnego i cząstkowego stanu za pomocą metod wielowymiarowej diagnostyki maszyn

• Języki publikacji: PL

Abstrakty

PL

Maszyny mają wiele uszkodzeń, które ewoluują podczas ich pracy (życia). Jeśli obserwujemy pewną liczbę symptomów stanu podczas pracy maszyny, to jesteśmy w stanie uchwycić informację uszkodzeniową zorientowaną, za pomocą tzw. symptomowej macierzy obserwacji (SOM). Jedną z metod dalszej ekstrakcji tej informacji diagnostycznej jest zastosowanie rozkładu według wartości szczególnych (SVD) do SOM. Problem postawiony w tej pracy polega na rozstrzygnięciu kwestii, czy w diagnostyce stanu używać uogólnionego symptomu całkowitego uszkodzenia maszyny, czy też posłużyć się tylko uogólnionym symptomem dominującego uszkodzenia. W tym celu stworzono dodatkowe oprogramowanie, dzięki któremu pokazano, że takie dychoto- miczne postawienie kwestii nie jest niewłaściwe. Najlepiej używać obydwa symptomy uogólnione, wtedy nasza wiedza o stanie maszyny jest pełniejsza.

EN

Machines have many faults which evolve during their operation. If one observes some number of symptoms during the machine operation, it is possible to capture fault oriented information. One of the methods to extract fault information from such a symptom observation matrix is to apply the Singular Value Decomposition (SVD), obtaining in this way the generalized fault symptoms. The problem of this paper is to find if the total damage symptom, being a sum of all generalized symptoms is the best way to infer on machine condition or is it better to use the first generalized symptom for the same purposes. There were some new software created for this purpose, and two cases of machine condition monitoring considered, but so far it is impossible to state that one of the inference methods is better. Moreover, it seems to the author that both inference methods are complimentary for each other, and should be used together to increase the reliability of diagnostic decision.

Słowa kluczowe

EN

condition monitoring; multidimensional observation; singular value decomposition; generalized fault symptoms; grey models; forecasting

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2008
• Tom: Vol. 46 nr 4
• Strony: 777--797
• Opis fizyczny: Bibliogr. 28 poz., rys.

Twórcy

autor

Cempel C.

• Poznan University of Technology, Wydział lu Instutut po angielsku, Poznań, Poland,

Bibliografia

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