A new frequency analysis for diagnosis of bearing defects in induction motors using the adaptive lifting scheme of wavelet transforms

This work describes a novel and effective application of the adaptive wavelet transformfor the detection of bearing faults on induction motor stator current. This transform is based on athree-step nonlinear lifting scheme: a fixed prediction followed by a space-varying update and a noadditive prediction. This transformation technique is used in a diversity of applications in digitalsignal processing and the transmission or storage of sampled data (notably the compression of thesound, or physical measurements of accuracy). Many faults in induction motor have beenidentified as bearing defects, rotor defects and external defects. Experimental results confirm theutility and the effectiveness of the proposed method for outer raceway fault diagnosis under noload and full load conditions.

• bearing fault diagnosis
• induction motor
• stator current analysis
• adaptive wavelet transform
• frequency analysis
• condition monitoring

• 9 — الصناعة والابتكار والبنية التحتية

• Machine Fault Diagnosis Techniques
• Electric Motor Design and Analysis
• Electrical Fault Detection and Protection
• bearing fault diagnosis
• induction motor
• stator current analysis
• adaptive wavelet transform
• frequency analysis
• condition monitoring
• Control and Systems Engineering
• Electrical and Electronic Engineering
• Engineering