动压气体轴承-转子系统稳定性分析  

Stability Analysis of Gas Bearing-rotor System

作　　者：张强[1] 张永峰[1] 陈钊[1] 

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《现代机械》2008年第5期4-6,共3页Modern Machinery

摘　　要：本文建立了普通圆柱型动压气体轴承支承的单盘转子系统模型,写出了系统的运动方程,并引用气体轴承的动力特性数值分析所得到的8个动力特性系数,利用Routh-Hurwitz准则,研究了系统的稳定性,计算表明所设计的轴承-转子系统在设计转速范围内的运转是稳定的。讨论了气体轴承结构参数偏心率,长径比及平均径向间隙对稳定性的影响,得出了应当采用小偏心率,小长径比,大平均径向间隙提高轴承转子系统稳定性的结论。This paper studies a model of a rigid rotor supported by self-acting gas journal hearings. The system＇s motion equations are presented and solved. Referring to eight stiffness and damping coefficients, the stability of the system is studied on Routh-Hurwitz Criterion and it is proved that the system is stable during the rotating speed. It is studied that the gas beating＇s structure parameters including eccentricity, length and clearance have a great effect on the stability of this system, and conclusions that small eccentricity and length and large clearance should be designed are given.

关 键 词：动压气体轴承 JEFFCOTT转子 稳定性Routh—Hurwitz准则 

分 类 号：TH133.35[机械工程—机械制造及自动化]