Open AccessA Method of On-line Monitoring for Vibration Table Bearings Based on VMD
Author(s) -
Xiaozhou Du,
Xin Qi,
Haiyang Gao,
Zhu Zihong
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/751/1/012017
Subject(s) - shaker , bearing (navigation) , acceleration , vibration , earthquake shaking table , harmonic , computer science , simple harmonic motion , acoustics , structural engineering , control theory (sociology) , engineering , artificial intelligence , physics , control (management) , classical mechanics
Aiming at the problems that the bearing inside the sliding table of the shaker used for the dynamic test of spacecraft cannot be observed and the failure cannot be known at the initial stage, an online prediction method for bearing failure is proposed. In this paper, the acceleration sensor is selected as the monitoring medium of bearing motion state response, and the VMD (variational mode decomposition) is used as the analysis method of bearing acceleration response data to calculate the harmonic components of the bearing except the fundamental wave. Through the calculation results, the failure bearing can be intuitively interpreted.