The assessment of object usability on the basis of instantaneous values of technical condition and regulation state parameters

• Autorzy: Lindstedt P. , Sudakowski T.
• Języki publikacji: EN

Abstrakty

EN

In the process of using a complex technical object, it is deregulated, worn and its reliability is decreased. Therefore, it is required that its status, technical state and reliability should be observed during its normal use and handling. The results of such observations allow a synthetic (complex) assessment of suitability of the object, determining its ability to properly carry out its tasks in accordance with its intended purpose. A continuous observation of changes of technical condition on the basis of relationship between the diagnostic signals (output) and the input signals (environment) allow evaluation of the regulation state of the object [4, 5]. An innovative method of assessment of the operated system usability presented in the article concerns an adequate analysis of the changes to aRb technical condition and aRc, regulation state current parameters formed from coupled equations of state (1 and 2) [1, 2, 3, 7]. While analysing the waveforms of instantaneous values of aRb technical condition and aRc regulation state parameters, it has been observed that parameter and instantaneous damage can be identified on the basis of quantitative relationships between the instantaneous threshold value of dpr and the corresponding instantaneous value of dpr dop, which are calculated from the following formulas (7, 8, 9). It is assumed that damage exists if for the instant theta i . dpri greather than d prdop i . Having the quantity of damage, reliability characteristics can be determined for every time of technical object exploitation (prior to the occurrence of catastrophic damage) [6].

Słowa kluczowe

EN

parametric damage; instant damage; technical condition parameter; reliability characteristics

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2012
• Tom: Vol. 19, No. 2
• Strony: 305--312
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Lindstedt P.

autor

Sudakowski T.

• Bialystok University of Technology, Faculty of Mechanical Engineering Wiejska Street 45C, 15 – 351 Bialystok, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Borowczyk, H., Lindstedt, P., Manerowski, J., Permises for a practical computer – aided parametric method of evaluation of the technical object reliability, Journal of KONES, Vol. 16, No. 2, Warsaw 2009.
• [2] Cempel, C., Teoria i inżynieria systemów, ITE – PIB, Radom 2006.
• [3] Lindstedt, P., The method of complex worthiness assessment of an engineering object in the proces of its use and service, Solid State Phenomena, Vol. 144, Trans Tech Publications, Switzerland 2009.
• [4] Lindstedt, P., Borowczyk, H., Magier, J., Badania możliwości kompleksowego diagnozowania układu łożyskowania na podstawie informacji uzyskanej z metod funkcjonalnej, tribologicznej, wibroakustycznej, Projekt badawczy KBN Nr 5T12D01122, sprawozdanie ITWL Nr 1371/50, Wyd. ITWL, Warszawa 2003.
• [5] Lindstedt, P., Sudakowski, T., Method of prediction of reliability characteristics of a pumping station on the base of diagnostic information, Journal of KONBiN 2(5)2008, ITWL, Warszawa 2008.
• [6] Sotskow, B. S., Niezawodność elementów i urządzeń automatyki, WNT, Warszawa 1973.
• [7] Sudakowski, T., Permises of operational method of calculation of reliability of machines on the base of parametric and momentary symptoms of damage, Acta Mechanica et Automatica, Vol. 3, No. 4, Bialystok 2009.