Application of ASEGMF in refinement of rotor center´s orbit

Aiming at the refinement of rotor center´s orbit, a novel method was proposed based on the adaptive structure element for generalized morphological filtering (ASEGMF). At first, the sine structure element was selected, and the length scale and the height scale were defined according to the feature of vibration signal. Then, the peak interval and the peak height were defined by signal´s local characteristic, and the length scale and the height scale of sine structure element were gotten by adaptive method. In the end, rotor center´s orbit was refined by the generalized morphological filter cascaded by one small and one big adaptive structure elements. This method conquers the selective random of current morphological filter, the structure element are gotten adaptively by signal´s local characteristic without artificial interference. Simulation and practical results show that this approach has better effectiveness in refinement of rotor ceter´s orbit.