Open AccessAnalytical Model for Separated Frequency Signature of Outer Race Bearing Fault From Static Eccentricity
Author(s) -
Touil Abderrahim,
Fatima Babaa,
Ouafae Bennis,
Frédéric Kratz
Publication year - 2022
Publication title -
international journal of circuits, systems and signal processing
Language(s) - English
Resource type - Journals
ISSN - 1998-4464
DOI - 10.46300/9106.2021.15.196
Subject(s) - signature (topology) , eccentricity (behavior) , rotor (electric) , bearing (navigation) , stator , fault (geology) , induction motor , asymmetry , squirrel cage rotor , computer science , control theory (sociology) , engineering , structural engineering , physics , mathematics , mechanical engineering , geometry , artificial intelligence , electrical engineering , particle physics , geology , control (management) , voltage , seismology , political science , law
The present paper addresses a precise and an accurate mathematical model for three-phase squirrel cage induction motors, based on winding function theory. Through an analytical development, a comparative way is presented to separate the signature between the existence of the outer race bearing fault and the static eccentricity concerning the asymmetry of the air gap between the stator and the rotor. This analytical model proposes an effective signature of outer race defect separately from other signatures of static eccentricity. Simulation and experimental results are presented to validate the proposed analytical model.