Study on lift-up speed of aerodynamic compliant foil thrust bearings  

作　　者：杨利花 石建华 刘恒 虞烈 

机构地区：[1]Mechatronics Engineering Depart ment of Lanzhou Jiaotong University [2]Mechatronics and Information System Institute of Xi'an Jiaotong University

出　　处：《Journal of Pharmaceutical Analysis》2007年第1期63-66,85,共5页药物分析学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.50275116and50475088);the National High-Tech Research and Development Programof China(No.2002AA503020).

摘　　要：Objective The experimental study on the lift-up speed of a new kind of compliant aerodynamic foil thrust bearings was performed on the multifunctional test rig established for testing the performances of foil gas bearings.Methods The lift-up speed of foil gas thrust bearing under given axial load was analyzed through the spectrum of axial displacement response in frequency domain.Results The test results indicated that the difference in the spectrum of axial displacement responses before and after lifting up of the rotor was obvious.After lifting up of the rotor,there were only larger components of rotation frequency and lower harmanic frequencies.If the rotor wasn't lift-up,there were also larger components of other frequencies in the spectrum.Conclusion So by analyzing the spectrum of axial displacement response,the results showed that the lift-up speed was about 1860rpm when the axial load was 31N.Objective The experimental study on the lift-up speed of a new kind of compliant aerodynamic foil thrust bearings was performed on the multifunctional test rig established for testing the performances of foil gas bearings.Methods The lift-up speed of foil gas thrust bearing under given axial load was analyzed through the spectrum of axial displacement response in frequency domain.Results The test results indicated that the difference in the spectrum of axial displacement responses before and after lifting up of the rotor was obvious.After lifting up of the rotor,there were only larger components of rotation frequency and lower harmanic frequencies.If the rotor wasn't lift-up,there were also larger components of other frequencies in the spectrum.Conclusion So by analyzing the spectrum of axial displacement response,the results showed that the lift-up speed was about 1860rpm when the axial load was 31N.

关 键 词：foil gas thrust bearings frequency domain lift-up speed displacement response 

分 类 号：TH133.35[机械工程—机械制造及自动化]