Evaluation of the Variation Process of Bearing Vibration Based on Non-ordered Gray Relation (Part II: Experiment)

Abstract

In order to analyze the process of bearing vibration variation, the original vibration data of four kinds of damage diameters are grouped, and the intrinsic data sequence is selected after grouping. Then, the non-ordered gray relation between data sequence of different groups and the intrinsic data sequence is established and the gray confidence level is obtained. The gray confidence level is compared with the set threshold of 90%. Then the variation of the bearing vibration is evaluated. The correctness and feasibility of the proposed method are verified by comparing the assessment with the actual situation.