Vibration diagnosis method for rotary machine

Details Vibration diagnosis method for rotary machine Vibration diagnosis method for rotary machine

G - Physics

01

M

354/26

G01M 1/22 (2006.01) G01H 1/00 (2006.01)

Patent

CA 1179064

Abstract: A vibration diagnosis method for a rotary machine is disclosed. The presence or absence of a self-excited vibration is determined by checking if a rotating speed is in a rotating speed range which allows the occurrence of the self-excited vibration, if an amplitude of a frequency component corresponding to a first order critical speed is larger than a predetermined level, and if phases at characteristic points of vibration signals change among cycles.

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