Removal of power line interference of space bearing vibration signal based on the morphological filter and blind source separation

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Dong, Shaojiang^1,2,3 ; Sun, Dihua^1 ; Xu, Xiangyang^2 ; Tang, Baoping^3

School of Automation, Chongqing University, Chongqing

400044, China^1

School of Mechatronics and Automotive Engineering, Chongqing Jiaotong University, Chongqing

400074, China^2

State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing

400030, China^3

关键词: Analysis of simulations;    Bearing vibrations;    Combination method;    Feature information;    High-frequency noise;    Morphological filters;    Powerline interference;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012101/pdf
DOI  :  10.1088/1755-1315/69/1/012101

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Aiming at the problem that it is difficult to extract the feature information from the space bearing vibration signal because of different noise, for example the running trend information, high-frequency noise and especially the existence of lot of power line interference (50Hz) and its octave ingredients of the running space simulated equipment in the ground. This article proposed a combination method to eliminate them. Firstly, the EMD is used to remove the running trend item information of the signal, the running trend that affect the signal processing accuracy is eliminated. Then the morphological filter is used to eliminate high-frequency noise. Finally, the components and characteristics of the power line interference are researched, based on the characteristics of the interference, the revised blind source separation model is used to remove the power line interferences. Through analysis of simulation and practical application, results suggest that the proposed method can effectively eliminate those noise.