全矢谱在滑动轴承转子系统油膜失稳中的应用  

Application of Full Vector Spectrum on Oil-film Instability of Sliding Bearing Rotor System

作　　者：马凌云 陈宏[1] MA Ling-yun;CHEN Hong(Institute of Vibration Engineering,School of Mechanical Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学机械工程学院振动工程研究所,郑州450001

出　　处：《组合机床与自动化加工技术》2018年第12期4-8,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(51405453)

摘　　要：以滑动轴承转子系统为研究对象,采用ANSYS软件建立滑动轴承双盘转子-滑动轴承系统有限元模型,将所得到的单通道信号和全矢谱技术融合后的全矢Hilbert解调信号相比较,并通过实例分析验证,结果表明全矢Hilbert解调信号能够更好的识别滑动轴承转子系统油膜失稳的故障特征,并且该方法有助于降低系统采样难度,该结论为油膜失稳故障提供了新的诊断方法,与传统方法所得结果不同,该方法显示发生油膜振荡时系统半频成分处于一定范围内而非一固定值。In order to learn the application of full vector spectrum technology on sliding bearing rotor system,establish sliding bearing double disk rotor system finite element mode and compare the single-channel signal with the full vector Hilbert demodulation signal obtained by full vector spectrum technology.After example,the result tells us the full vector Hilbert demodulation signal can much better and more wide range reflecting fault characteristics of sliding bearing double disk rotor system.And it reduces the difficulty of system sampling.It’s a new diagnostic method for oil-film oscillation.Different from what the traditional method tells us,the full vector Hilbert demodulation signal tells us there is a fixed range not a fixed value for Half frequency component when oil-film oscillation.

关 键 词：油膜失稳 油膜振荡 全矢谱 滑动轴承 

分 类 号：TH113.1[机械工程—机械设计及理论] TG506[金属学及工艺—金属切削加工及机床]