悬臂转子远端优化主动平衡技术研究  

A Study of the Active Balancing Technology for the Far End Optimization of a Cantilever Rotor

作　　者：苏奕儒[1] 何立东[1] 冯伟[1] 

机构地区：[1]北京化工大学诊断与自愈工程研究中心,北京100029

出　　处：《热能动力工程》2008年第4期369-372,共4页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学重点基金资助项目(50635010)

摘　　要：为了指导主动平衡装置在工业悬臂转子上的应用,搭建了悬臂转子实验台进行主动平衡实验研究工作。对实验台转子进行有限元仿真计算表明,安装在联轴节处的平衡装置可以有效地降低由飞轮不平衡产生的振动,在两个转速下,2号轴承的振动降幅均达到25%以上。但在2号轴承振动降低的过程中,1号轴承处的振动量会迅速增大。提出了1号和2号轴承振动的优化控制,使两个轴承振动在工作转速下不超过报警值30μm。基于优化控制的思想,在悬臂转子实验台上进行多转速下液压自动平衡实验,实验结果验证了仿真计算的结论,2号轴承的振动降幅达到30%以上,取得了较好的平衡效果。数值仿真与实验研究为主动平衡技术在工程实际悬臂转子中的应用奠定了基础。To guide the application of an active balancing device in industrial cantilever rotors,a cantilever rotor test stand was set up to perform an experimental study of active balancing technology. The results of finite-element simulation calculation of a test stand rotor show that the balancing device installed on a coupling can effectively reduce the vibration caused by any imbalance of a flying wheel. At two rotating speeds,both amplitudes of 2# bearing can be reduced by over 25%. However,during the vibration reduction of 2# bearing,the vibration of 1# bearing will increase rapidly. An optimized control over 1# and 2# bearing vibration was proposed to make the vibration of both bearings at the operating speed not exceed alarm value 50μm. Based on the idea of an optimized control,hydraulic automatic balancing experiments at several rotating speeds were performed on the cantilever rotor test stand. The test results verified the conclusion of the simulation calculation,and the amplitude reduction of 2# bearing amounts to over 30%,achieving a relatively good balancing effectiveness. The numerical simulation and experimental study have laid a foundation for the application of active balancing technology to cantilever rotors in engineering practice.

关 键 词：悬臂转子 主动平衡 振动 优化控制 

分 类 号：O347.6[理学—固体力学]