高速气体轴承转子周期性碰摩故障试验研究  

Experimental Study on Periodic Rubbing Faults of Gas Lubrication Bearings and High Speed Rotors

作　　者：边技超[1] 付忠广[1] 杨金福[2] 王正威[1] 于明涛[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206 [2]中国科学院工程热物理研究所,北京100190

出　　处：《噪声与振动控制》2015年第5期130-133,138,共5页Noise and Vibration Control

基　　金：国家科技支撑计划项目(基金编号:2012BAA11B02);中央高校基本科研业务费专项资金项目(13XS10);中央高校基本科研业务费专项资金项目(2014ZZD04)

摘　　要：针对高速气体轴承转子结构进行周期性碰摩试验研究。对此结构的轴系进行升速试验,试验结果显示轴系转速在升高到一定程度时开始产生飞升,随后在频域内出现周期性碰摩现象。通过频谱特性、轴心运动轨迹及时间—频率—幅值三维谱图等振动图谱特征,分析转子飞升与周期性碰摩现象的动力学过程及产生原因,并给出碰摩故障的典型特征。研究结果可以为此类碰摩故障的识别与相关碰摩故障诊断系统的建立提供试验数据支撑。The periodic rubbing faults of gas lubrication bearings and high speed rotors were studied experimentally. The speed boost experiment of the shaft system of the structure was carried out. The result shows that when the speed reaches a certain level, the speed boost happens and the periodic rubbing occurs. Through the analysis of the frequency spectrum characteristics, shaft orbit, bifurcation diagram and time-frequency-amplitude waterfall diagrams, the dynamic process and the reason of the speed boost and the periodic rubbing were described, and the typical features of all kinds of rubbing faults were found. This experimental study provides a database for rubbing fault identification and diagnosis system establishment.

关 键 词：振动与波 气体轴承转子 周期性碰摩 试验研究 轴心轨迹 

分 类 号：TH113.1[机械工程—机械设计及理论] TH113.2