Characteristics Identification of Overlapping Vibration Signals on Mallat
In rotor-bearing system running, vibration signals measured were an kind of Multi-vibration source signals which is overlapping each other. These overlapping signals were difficult to be separated by the ordinary methods, which is adverse to precisely estimate faults of rotor-bearing system in running. In this paper, a test rig was set up to simulate mis-alignment faults; collected vibration signals of bearings were decomposed and reconstructed by algorithm of Mallat. Reconstructed signal can reflect detail character s of bearings vibration. And vibration signals characteristics of fault rotor were effectively identified.
Zhengyi Jiang and Chunliang Zhang
H. Sun et al., "Characteristics Identification of Overlapping Vibration Signals on Mallat", Advanced Materials Research, Vols. 97-101, pp. 4375-4378, 2010