| 摘要 |
The invention relates to a method for determining the vibration of turbomachine rotor blades (1), characterised in that it comprises steps consisting in: measuring (E1), via one or more sensors (4), the variation in the minimum distance between each sensor (4) and the top (10) of each blade (1) along a radial axis (R) of the rotor, between successive rotations of each blade (1) in front of each sensor (4), a minimum distance value being obtained on each passage of each blade (1) in front of each sensor (4), in order to deduce therefrom a variation in the lengths of the blades (1) along said radial axis (R); and, using (E3) directly, as such, said variation in the length of the blades (1) along said radial axis (R) in a model of the deformation of the blades (1), in order to deduce (E4) therefrom characteristics of one or more vibrational modes of the rotating blades (1). The invention also relates to a turbomachine equipped with a device implementing this method. |
