GMA可控油膜轴承-转子系统不平衡响应的理论研究  

Theoretical Investigation on Unbalance Response of Controllable Oil Film Bearing-rotor System with GMA

作　　者：吴超[1] 张永宇[2] 纪莲清[1] 朱茹敏[1] 王文[3] 岑少起[4] 

机构地区：[1]郑州轻工业学院机电工程学院,河南郑州450002 [2]上海工程技术大学,上海201620 [3]上海大学轴承研究室,上海200072 [4]郑州大学机械工程学院,河南郑州450002

出　　处：《润滑与密封》2009年第9期47-50,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(50675129);郑州轻工业学院博士基金资助项目

摘　　要：论述了基于超磁致伸缩驱动器(GMA)的可控油膜轴承的工作原理,建立了该油膜轴承-弹性转子系统的数学模型,模拟了控制相位和增益改变对系统不平衡振动的影响。计算结果表明带有GMA的可控油膜轴承能够减小系统的工频振动和半频涡动,提高系统的稳定性。控制增益和相位差的改变对系统的工频振动结果影响较大,而且对同一个控制增益,存在一个最佳的相位差,使系统的不平衡振动最小。The principle of smart oil film bearing with gaint magnetostrictive actuators mathematical model of the elastic rotor-bearing systems was built up. Unbalance vibration smart bearing was simulated under different control gains and phase differences. Calculating （GMA） was introduced. The of the rotor supported by the results show that the new smart beating with GMA can reduce the unbalance response and oil whip vibration of the rotor and improve the stability of the beating-rotor system. Phase difference and control gain have important effect on unbalance vibration. There is an optimal phase difference value which can minimize the unbalance vibration for a certain control gain.

关 键 词：转子-轴承系统 不平衡响应 超磁致伸缩驱动器 主动控制 

分 类 号：TH133.31[机械工程—机械制造及自动化]