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In this paper is represented the method of dynamic analysis of rotor vibrations of multistage centrifugal compressor with automatic balancing device based on nonlinear mathematical model that determines the axial movement of the rotor and leakages through hydraulic throttles with non-stationary components. To analyze nonlinear oscillations the method of linearization is used. Dynamic stability of the system was investigated by Hurwitz criterion.

Investigation of Nonlinear Axial Rotor Oscillations of the Multistage Centrifugal Compressor with the Automatic Balancing Device