Multiple fault parameter estimation of a fully assembled turbogenerator system

• Autorzy: Lal M.

Identyfikatory

DOI

10.24425/123023

• Języki publikacji: EN

Abstrakty

EN

The present article investigates the dynamic behavior of a fully assembled turbogenerator system influenced by misalignment. In the past, most of the researchers have neglected the foundation flexibility in the turbogenerator systems in their study, to overcome this modelling error a more realistic model of a turbogenerator system has been attempted by considering flexible shafts, flexiblecoupling, flexible bearings and flexible foundation. Equations of motion for fully assembled turbogenerator system including flexible foundations have been derived by using finite element method. The methodology developed based on least squares technique requires forced response information to quantify the bearing–coupling–foundation dynamic parameters of the system associated with different faults along with residual unbalances.The proposed methodology is tested for the various level of measurement noise and modelling error in the system parameters, i.e., 5% deviation in E (modulus of elasticity) and ρ (density), respectively, for robustness of the algorithm. In a practical sense, the condition analyzed in the present article relates to the identification of misalignment and other dynamic parameters viz. bearing and residual unbalance in a rotor integrated with flexible foundation.

Słowa kluczowe

EN

identification; misalignment; foundation; finite element method; FEM; multiple faults; modeling error

PL

identyfikacja; niewspółosiowość; podstawa; metoda elementów skończonych; MES; błędy wielokrotne; błąd modelowania

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. LXV, nr 2
• Strony: 233--252
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Lal M.

• Department of Industrial Design, National Institute of Technology Rourkela, India

Bibliografia

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