转子系统随机支撑刚度参数的识别  

Identification of Random Supporting Stiffness of a Rotor System

作　　者：刘保国[1] 潘勇[2] 岳龙旺[1] 胡继云[1] 

机构地区：[1]河南工业大学机械电子工程研究所,河南郑州450001 [2]河南机电职业学院,河南郑州451191

出　　处：《实验力学》2013年第5期623-628,共6页Journal of Experimental Mechanics

基　　金：国家自然科学基金资助项目(11172092;10872064);郑州市科技领军人才工程资助项目(10LJRC187)

摘　　要：基于Riccati摄动随机传递矩阵方法建立的转子系统特征值与随机参数变量间的函数关系,给出了转子系统随机参数的识别方法和详细步骤,可用于识别随机参数的均值和方差。以改装的Bently实验转子为研究对象,通过大量测试,识别出了转子系统的随机支撑刚度参数,建立了该转子系统的随机参数动力学模型。该模型可用于研究转子系统的随机参数动力学问题。Functional relation between rotor system characteristic values and its random parameters based on Riccati perturbation random transfer matrix method provides an identification method and detailed steps for random parameters of rotor system, which can be used for identifying mean values and standard deviations of random parameters. Taking a modified Bently test rotor system as study object, more than 200 natural frequencies of the system were measured, and random supporting stiffness of the rotor system was identified, then a dynamic model describing random parameters of rotor system was built. This model can be used for studying the dynamic problem of rotor system random parameters.

关 键 词：转子系统 随机参数 识别 

分 类 号：TH113.1[机械工程—机械设计及理论] O324[理学—一般力学与力学基础]