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Abstract

This paper presents the identification of rotor support dynamic parameters. The final dynamical system equation using the Lagrange method is underdetermined; therefore, another set of equations is derived using same system equation with different rotating speed. Combining these two equation sets, an overdetermined algebraic equation is obtained, and the solution of the system equation can be obtained using the least squares method. The sensitivity analysis is performed to extract the optimized solution, which is considered to be insensitive to inherent measurement errors. The trigonometric terms of experimentally obtained orbit shapes can be utilized for analysis at varying rotor speeds after discussing the possibility of the proposed method. The accuracy of the proposed method is compared with estimated simulation parameters, and experimental results for the rotor rig are compared with previous known data.

Keywords

identification of rotor parameters sensitivity analysis orbit data imbalance excitation overdetermined system

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Identification of Rotor Bearing Parameter Using Orbit Data

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