Bearing fault diagnosis application in cement vertical mill based on improved empirical mode decomposition

In the practical engineering of cement vertical mill, many faults occur in the bearings, including the driving end and the fan end. This paper introduces the structure of common bearing, and analyzes the potential fault position and the characteristic frequency when fault occurs. Furthermore, an improved empirical mode decomposition algorithm is adopted to study the fault characteristic of bearings. Five original joint performance indices are proposed to assess the operational status of bearing, and a numerical simulation experiment is carried out to verify the serviceability. Finally, simulation result is analyzed and future work is summarized.