Stiffness Measurement Method of Repulsive Passive Magnetic Bearing in SGMSCMG
Stiffness Measurement Method of Repulsive Passive Magnetic Bearing in SGMSCMG
复制标题
SGMSCMG排斥性被动磁力轴承刚度测量方法
DOI：
10.1109/tim.2013.2256818
复制
发表时间：
2013-11-01
影响因子：
5.6
通讯作者：
Ren, Yuan
中科院分区：
文献类型：
--
作者：
Sun, Jinji;Chen, Dong;Ren, Yuan
为了准确测量排斥型被动磁轴承的位移刚度和角刚度等刚度，针对分段Halbach磁化阵列排斥型被动轴向磁轴承和主动径向磁轴承的单万向节磁悬浮控制力矩陀螺仪（SGMSCMG）提出了一种新的刚度测量方法。首先，利用有限元法（FEM）研究了推斥式被动磁轴承的悬浮力和刚度特性。其次，提出了排斥型被动轴向磁轴承的详细刚度测量方法。包括主动径向磁轴承电流刚度测量、推斥轴向磁轴承位移刚度测量、主动径向磁轴承位移刚度测量、SGMSCMG综合位移刚度和角刚度测量四个步骤。制作了角力矩为200 Nms的SGMSCMG原型机，该原型机是带有Halbach磁化阵列的排斥型被动轴向磁轴承和主动径向磁轴承。通过样机实验验证了所提出的Halbach磁化阵列排斥型被动轴向磁轴承刚度测量方法。
To measure the stiffness such as displacement stiffness and angular stiffness of repulsive passive magnetic bearing accurately, a new stiffness measurement method is proposed for the single gimbal magnetically suspended control moment gyroscope (SGMSCMG) with repulsive passive axial magnetic bearing with segmented Halbach magnetized array and active radial magnetic bearings. First, the suspension force and stiffness characteristics of the repulsive passive magnetic bearing are studied using finite element method (FEM). Second, the detailed stiffness measurement method of repulsive passive axial magnetic bearing is proposed. It includes four procedures such as measurement of the current stiffness of the active radial magnetic bearing, measurement of the displacement stiffness of the repulsive axial magnetic bearing, measurement of the displacement stiffness of the active radial magnetic bearing and measurement of the synthesis displacement stiffness and angular stiffness of SGMSCMG. A prototyped SGMSCMG with angular moments of 200 Nms is manufactured, which is of repulsive passive axial magnetic bearing with Halbach magnetized array and active radial magnetic bearings. The proposed stiffness measurement method of repulsive passive axial magnetic bearing with Halbach magnetized array is verified by prototyped experiments.