机械科学与技术2012，Vol.31Issue(2)：335-339,5.
航空发动机中介轴承局部故障边带差值诊断法
Sideband Difference Diagnostics of Local Defects for Aero-engine Intershaft Bearing
邓巍 1廖明夫 1马振国1
作者信息
- 1. 西北工业大学动力与能源学院,西安710072
- 折叠
摘要
Abstract
Aiming at the problem of difficult to diagnose local defects of aero-engine intershaft bearing, a new diag- nosis approach of sideband difference diagnostics of local defects for aero-engine intershaft bearing was proposed in this paper. Based on operating characteristic of intershaft bearing for both inner and outer ring rotation, the ap- proach used signal modulation frequency sideband as the main fault information, and established a complete set of fault diagnosis procedure. Experiments of an aero-engine inter bearing with the outer ring failure were carried out. Using the proposed approach, the local defects of the bearing was judged accurately. The theoretical analysis and fault bearing diagnosis example showed that the method can identify local defects of intershaft bearing and is effec- tive in local defects diagnosis for the aero-engine intershaft bearing关键词
航空发动机/中介轴承/故障诊断/局部故障Key words
aero-engine/intershaft bearing/fault diagnosis/local defects分类
航空航天引用本文复制引用
邓巍,廖明夫,马振国..航空发动机中介轴承局部故障边带差值诊断法[J].机械科学与技术,2012,31(2):335-339,5.
