Open AccessFault Diagnosis Method of Gearbox Based on Sound Pressure Signal Analysis
Author(s) -
Lei Guo,
Yongjian Wang,
Jinxing Ju,
Zhengyong 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 - 10.1088/1742-6596/1748/4/042044
Subject(s) - sound (geography) , acoustics , signal (programming language) , sound analysis , fault (geology) , sound pressure , computer science , frequency spectrum , position (finance) , time–frequency analysis , signal processing , frequency analysis , speech recognition , engineering , geology , digital signal processing , computer vision , spectral density , telecommunications , physics , seismology , finance , filter (signal processing) , computer hardware , economics , programming language
The gearbox structure is complex, so it is difficult to determine the root cause of the problem after abnormal sound appears. The method of sound pressure signal analysis is used to analyze the abnormal sound of gearbox. The spectrum analysis method is used as the data processing method. The sound pressure of a kind of abnormal sound of gearbox is collected. By analyzing its frequency characteristics and structural characteristics, it is judged that the gear is abnormal. The accuracy of the inference based on the result of sound pressure analysis is verified by the shape and position detection of the gear. The results show that through the frequency analysis of the sound pressure signal, the root cause of the gearbox problem can be accurately determined.