Method and system for monitoring bearings

摘要

A method and system for monitoring the condition of a bearing mounted on a rotating shaft, particularly one present in an aircraft gas turbine engine, where the vibration sensor that monitors the bearing is remote therefrom but proximate to the rotating shaft. The vibration sensor obtains (101) a broadband signal having frequencies that include the bearing defect peak of the monitored bearing (54). The broadband signal is analyzed (104) to identify the presence of the bearing defect peak. If the bearing defect peak is present, the amplitude of this peak is quantified (107) to determine (109) whether degradation of the monitored bearing has at least reached a threshold criterion previously established.