摘要
提出了锥形超声波悬浮电动机转子轴承结构,建立了振动平行板气体挤压膜模型,通过有限元分析,确定周期内压力平均值大于零。利用相同理论,对超声波悬浮轴承承载气膜进行分析,通过试验测试不同质量轴承帽的悬浮间隙,并与分析结果进行对比。结果表明:利用超声振动形成承载气膜在压力周期内能够实现对电动机转子的悬浮,悬浮间隙越小,承载刚度越好,转子越稳定。
The structure of bearings in conical ultrasonic suspension motor rotor is proposed,and the model is built for gas squeeze film of vibration parallel plate.Through finite element analysis,it is determined that the average pressure in cycle is greater than zero.According to same theory,the carrying gas film of ultrasonic suspension bearings is analyzed,and the suspension gas between bearing caps with different quality is tested and compared with analysis results.The results show that the carrying gas film formed by ultrasonic vibration is able to achieve suspension of motor rotor within pressure cycle.The smaller the suspension gas,the better the carrying stiffness and the more stable the rotor.
作者
伊延吉
王桂龙
王洪臣
杨志刚
YI Yanji;WANG Guilong;WANG Hongchen;YANG Zhigang(Engineering Training Center,Changchun Institute of Technology,Changchun130012,China;College of Mechanical Science and Engineering,Jilin University,Changchun 130025,China)
出处
《轴承》
北大核心
2018年第10期38-41,52,共5页
Bearing
基金
国家自然科学基金项目(50977037)
关键词
空气轴承
超声波悬浮
承载气膜
振动
air bearing
ultrasonic suspension
carrying gas film
vibration
