摘要
针对径向联轴器不对中的问题,介绍了4自由度磁悬浮刚性转子动力学模型,在其基础上建立了含有转子-联轴器不对中力的数学模型。在该转子系统中阐明了转子-联轴器在正常工作时与径向不对中量为0.05 mm时的不平衡力,指出了转子悬浮稳定性与转速和联轴器偏心质量的关系。使用Simulink搭建了仿真模型,并设计完成相应的实验。结果表明转速和联轴器质量对于转子系统的悬浮精度和刚度的影响很大,在4000 r/min转速条件下,施加联轴器偏心质量后,转子位移幅值增加35μm;同样的联轴器,在4000 r/min时相比静态悬浮时位移幅值增加10μm。
The dynamic model of a magnetic suspension rigid rotor with four-degree-of-freedom is introduced in this paper,by developing a theoretical calculation for the misaligning force of the rotor-coupler.The unbalanced force of the rotor-coupler in normal operation and the radial misalignment is 0.05 mm in this rotor system.The relationship between the suspension stability of the rotor and the parameters in terms of rotating speed and eccentric mass of the coupler has been investigated.Both experimental approaches and numerical simulations(in Simulink)have been conducted.The results show that the speed and the coupler mass greatly impact the suspension accuracy and the stiffness of the rotor system.Under the rotating speed of 4000 r/min,the amplitude of the rotating rotor increases by 35μm,after the eccentric mass of the coupler is applied.Its amplitude increases by 10μm if it is compared with the status of static levitation.
作者
苏荣成
程百新
郭新华
SU Rongcheng;CHENG Baixin;GUO Xinhua(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Provincial Engineering Technology Research Center for Magnetic Suspension,Wuhan 430070,China)
关键词
径向联轴器
不对中
磁悬浮系统
悬浮精度
misaligning
coupler
magnetic levitation system
levitation accuracy
作者简介
苏荣成(1995-),男,河北张家口人,武汉理工大学机电工程学院硕士研究生.
