动静压气体轴承-转子系统振动特性实验研究  

Experimental Research on Vibration Characteristics of Hybrid Gas Bearing-Rotor System

作　　者：张璐瑶 贾晨辉[1] 臧腾飞 史大炜 ZHANG Lu-yao;JIA Chen-hui;ZANG Teng-fei;SHI Da-wei(School of Mechatronics Engineering,He’nan University of Science and Technology,He’nan Luoyang 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《机械设计与制造》2023年第9期128-132,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51475142)。

摘　　要：基于气体轴承-转子系统的非线性响应,搭建气体轴承-转子系统振动测试试验台。结合时域图、频谱图和轴心轨迹图分析气体轴承-转子系统升速过程中运行状态的发展变化情况,研究系统运行过程中的非线性振动特性。分析不同供气压力对振型、振幅、频率、轴心轨迹和稳定性的影响,提出稳定性控制方法。结果表明:调整动静压气体轴承供气压力,能够改变系统的动态特性,有效提高系统的固有频率,改善低频振动与固有频率耦合效应,提高转子失稳转速,推迟振荡失稳的产生,限制气膜振荡的幅值,能够有效的提高轴承-转子系统运行稳定性。Based on the nonlinear response of the gas bearing-rotor system,a test bench for vibration testing of the gas bearing-rotor system was built.Combining time-domain diagram,frequency spectrum diagram and axis trajectory diagram to analyze the development and change of the operating state of the gas bearing-rotor system during the speed-up process,and study the nonlin⁃ear vibration characteristics during the system operation.Analyze the influence of different air supply pressures on the mode shape,amplitude,frequency,axis trajectory and stability,and propose a stability control method.The results show that:adjusting the gas supply pressure of the hybrid gas bearing can change the dynamic characteristics of the system,effectively increase the natural fre⁃quency of the system,improve the coupling effect of low-frequency vibration and natural frequency,increase the rotor instability speed,delay the occurrence of oscillation instability,and limit The amplitude of the gas film oscillation can effectively improve the operational stability of the bearing-rotor system.

关 键 词：动静压气体轴承 气体轴承-转子系统 振动 稳定性 试验研究 

分 类 号：TH16[机械工程—机械制造及自动化] TP242[自动化与计算机技术—检测技术与自动化装置]