回转机械支承油膜稳定性在线监测  

On-Line Monitoring of the Oil Whirl Stability in Rotating Machinery

作　　者：孟庆丰[1] 蒋晓玲 何正嘉[1] 

机构地区：[1]西安交通大学机械工程学院,西安710049

出　　处：《振动．测试与诊断》1997年第4期25-29,共5页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金

摘　　要：探讨了回转机械油膜失稳的特征，提出了在线提取自由衰减响应的一种信号处理方法，用获取的对数衰减率作为油膜稳定性裕度和趋势分析的特征参数，现场实例表明提出的油膜稳定性在线监测方法的有效性。The feature of oil whirl stability in rotating machinery was seudied. A mechod for extracting freely decaying response from on-line vibration measurement of the machinery is presented,and it is suggsted that the logarithmic decrement obtained from the decaying response can be used as the feature parameter to monitor the margin and trend of the stability.A practical example shows that the method is effective.

关 键 词：油膜稳定性 在线监测 回转机械 对数衰减率 

分 类 号：TH113.25[机械工程—机械设计及理论]