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航空发动机中介轴承的故障特征与诊断方法

廖明夫 马振国 刘永泉 王德友

廖明夫, 马振国, 刘永泉, 王德友. 航空发动机中介轴承的故障特征与诊断方法[J]. 航空动力学报, 2013, 28(12): 2752-2758.
引用本文: 廖明夫, 马振国, 刘永泉, 王德友. 航空发动机中介轴承的故障特征与诊断方法[J]. 航空动力学报, 2013, 28(12): 2752-2758.
LIAO Ming-fu, MA Zhen-guo, LIU Yong-quan, WANG De-you. Fault characteristics and diagnosis method of intershaft bearing in aero-engine[J]. Journal of Aerospace Power, 2013, 28(12): 2752-2758.
Citation: LIAO Ming-fu, MA Zhen-guo, LIU Yong-quan, WANG De-you. Fault characteristics and diagnosis method of intershaft bearing in aero-engine[J]. Journal of Aerospace Power, 2013, 28(12): 2752-2758.

航空发动机中介轴承的故障特征与诊断方法

Fault characteristics and diagnosis method of intershaft bearing in aero-engine

  • 摘要: 提出了转差域频谱和转差域包络谱的概念,建立了诊断航空发动机中介轴承故障的方法.利用发动机高、低压转差作为触发信号,对发动机振动信号进行等转差周期采集,并在转差域对振动信号进行频谱和包络谱分析.结果表明:不平衡响应、不对中响应以及外环静止的轴承故障响应等振动信号在转差域频谱和转差域包络谱上的位置随转速变化;而中介轴承的故障响应在转差域频谱上的边频成分间距不随转速变化,具有倍频“恒间距”特征;在转差域包络谱上的位置也不随转速变化,具有“恒频”特征.带外环故障的中介轴承实验表明:转速变化时,在转差域包络谱中,外环故障特征倍频成分位置不变;在转差域频谱中,出现间隔宽度恒定为外环故障特征倍频的频率成分.

     

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出版历程
  • 收稿日期:  2012-11-29
  • 刊出日期:  2013-12-28

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