Vibrations of rotors Noise of measurement Circularity and coaxiality

摘要

Defects of circularity and coaxiality, noises of electric and magnetic oriqin influence the measurements which express the vibratory behaviours of rotors of rotating machines. Their supervision, their balancing, the study of their behaviour and their modal analysis require that the basic signals rough data be clarified to facilitate the interpretations. Examples are given which show results for the determination of critical speeds (maximum values of the vibration amplitudes) and the modal analysis (transient state). Systems which enable the management of measured signals shall be specially studied.