A METHOD FOR ANALYSING GEARBOX FAULTS USING TIME–FREQUENCY REPRESENTATIONS

✍ Scribed by H. Oehlmann; D. Brie; M. Tomczak; A. Richard

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 910 KB
• Volume: 11
• Category: Article
• ISSN: 0888-3270
• DOI: 10.1006/mssp.1996.0093

✦ Synopsis

Gearbox faults are analysed using time-frequency (TF) representations. First, a three-step TF analysis method is introduced, consisting of: (1) calculation of the TF representation; (2) physical interpretation of the main components observed; and (3) model building and validation. Gear and bearing faults are addressed. Physical interpretation of the vibration signals leads to a gearbox model which distinguishes and localises two types of structures: non-linear time-varying structures covering all moving parts, and linear time-invariant structures describing the non-mobile casing.