Patent ID: 6158286
Filing Date: 2000-12-12
Classification: G01H,G01M

Abstract:
A process for determining vibrations of a rotor of a functioning rotary machine, said determining being performed during normal operating conditions, at high rotation operating speed .OMEGA., said process comprising:a) acquiring and digitizing a signal S emitted from at least one sensor C on a displacement of said rotor when the rotor is rotating in its normal operating conditions; andb) subtracting a reference signal B of a same type,wherein B is determined beforehand,wherein B is acquired at rotor speed .OMEGA..sub.b that is lower than the operating speed .OMEGA. such that signals emitted from at least two sensors (C1, C2) of rotor displacement are nearly identical when time offsets are ignored, said two sensors being offset at an angle in a same plane perpendicular to the symmetry axis of said rotor.