滑动轴承油膜刚度参数的识别  

Identification of Oil-Film Stiffness Parameters of Sliding Bearings

作　　者：姚大坤[1] 黄文虎[1] 邹经湘[1] 

机构地区：[1]哈尔滨工业大学航天科学与力学系,哈尔滨150001

出　　处：《动力工程》2005年第4期483-486,共4页Power Engineering

基　　金：国家自然科学基金重大项目(19990510);国家"十五"重大技术装备研制项目(ZZ01-01-04-03)

摘　　要：提出了根据实测的转子临界转速、轴承座的动刚度值和已知的转子结构参数识别轴承油膜刚度的新方法。并以300MW汽轮发电机现场试验数据为例验证了识别方法。该方法识别精度较高而且不需要对运行中的转子进行加载,因而实用性较强。A new method is presented for identifying oil-film stiffness of bearings by making use of the actually measured critical rotor speed and the dynamic stiffness of the bearing pedestal together with known structural parameters of the rotor. This way of identification has been verified by on site test data of a 300 MW turbo-generator, taken as an example. The accuracy of identification by this method is relatively high and moreover doesn＇ t need any external forces to be exerted on the rotor. It therefore has a good practicability. Figs 3, tables 5 and refs 10.

关 键 词：动力机械工程 汽轮发电机 轴承 油膜刚度 

分 类 号：TH113.1[机械工程—机械设计及理论] TK262[动力工程及工程热物理—动力机械及工程]