矢量投影故障诊断法  

Failure Diagnosis Method Based on Vector Projection

作　　者：杨友堂[1] 肖德云[1] 周京[1] 

机构地区：[1]清华大学精密仪器及机械学系,清华大学自动控制系

出　　处：《振动工程学报》1994年第1期38-44,共7页Journal of Vibration Engineering

摘　　要：文中就旋转机械的转子／支承系统，针对几种典型的故障现象，利用最小二乘格网滤波器和横向滤波器算法，在时域内提出了一种基于矢量投影的故障诊断法。本法利用柔性转子模拟试验台对三种典型故障──摩擦、油膜涡动、油膜振荡实现了在线故障诊断，结果表明与实际相符，并用最大熵谱离线分析，也得到了相同的结论。This paper presents a new failure diagnosis method based on vector projection (VPDS) which uses least squares adaptive lattice filters and transversal filters algorithm for the key component of rotating ma-chinery-rotor /bearing system.Besides test of simulation,many times of on-line failure diagnosis are carried out using this method on a flexible rotor stage for three typical failures-friction,oil whirl,and oil whip. The results of diagnosis indi-cate the types and degree of real failures correctly,confirming that it is a simple and effective method. Finally,we analyses these typical failure signals by means of maximum entropy spectral method. Itshows that its results are as well as VPDS method.

关 键 词：旋转机构 故障诊断 柔性转子模拟 

分 类 号：TH165.3[机械工程—机械制造及自动化]