Open AccessJudgment and correction of lost speed Keyphasor pulse of rotating machinery
Author(s) -
Qihe Liu
Publication year - 2021
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 - 10.1088/1742-6596/2029/1/012137
Subject(s) - pulse (music) , signal (programming language) , interpolation (computer graphics) , spline interpolation , rotational speed , computer science , control theory (sociology) , vibration , acoustics , mathematics , physics , artificial intelligence , computer vision , telecommunications , classical mechanics , motion (physics) , detector , bilinear interpolation , programming language , control (management)
The order analysis of vibration signal of rotating machinery depends on the speed Keyphasor signal, and the Keyphasor pulse will be lost in actual measurement. In order to calculate the rotational speed accurately, a method to judge whether the Keyphasor pulse is lost is given, and a method to recover the lost pulse based on cubic spline interpolation is proposed. The simulation based on LabVIEW shows that the method given in this paper can well judge and recover the lost Keyphase pulse.