摘要
针对某型航空涡扇发动机整机振动过大现象进行测量并应用M atlab语言对该发动机振动信号进行了详细的时域、频域、三维谱阵分析。根据发动机转子各故障的典型特征,认为某型发动机振动异常的主要是因为高、低压转子不平衡和转动件与静止件碰摩造成的。所得出的结论对航空发动机故障诊断有一定的参考价值。
This paper discusses the measurement method for a turbo -fan aero -engine vibration that the acceptance standards and the vibration signal was analyzed detailed using the vibration signal exceeds analysis methods, including time domain, frequency domain, and waterfall diagrams analysis methods by Matlab. It is found that the possible causes of the excessive vibration are rubbing and rotor unbalance of abnormal vibration characteristics. The conclusion should be of some reference value for the fault diagnosis of the aero - engine vibration.
出处
《沈阳航空工业学院学报》
2008年第5期9-11,15,共4页
Journal of Shenyang Institute of Aeronautical Engineering
关键词
航空发动机
整机振动
转子不平衡
碰摩
aero - engine
vibration
fault diagnosis
rotor unbalance
rubbing
