Open AccessDesign of the Unsteady Vibrating Signals Order Analysis System for the Rotating Machinery
Author(s) -
Qihe Liu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1601/6/062047
Subject(s) - interpolation (computer graphics) , resampling , fast fourier transform , acceleration , process (computing) , computer science , algorithm , angular acceleration , control theory (sociology) , lagrange polynomial , point (geometry) , mathematics , computer vision , motion (physics) , artificial intelligence , physics , geometry , control (management) , classical mechanics , class (philosophy) , operating system
To eliminate the spectral ambiguity generated by FFT analysis method, the computational order tracking (COT) method is adopted to process the unsteady vibrating signals acquired from the rotating machinery. In this paper, the Lagrange 7-point interpolation algorithm is proposed to calculate the speed profile, the subsection interpolation method is developed based on the given angular acceleration threshold to obtain resampling time, and the sliding low-pass filtering interpolation method is adopted for angular resampling. According to these algorithms, the order analysis system is developed based on LabVIEW, and it is verified by the tests of simulation signals.