TY - GEN
T1 - Modeling and analysis of a novel magnetic levitation gravity compensator
AU - Zhang, He
AU - Kou, Baoquan
AU - Zhao, Weiduo
AU - Bai, Yinru
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/10
Y1 - 2014/10/10
N2 - In this paper, a novel cylindrical magnetic levitation gravity compensator is proposed, of which the mover is composed of several permanent magnet rings in the arrangement of Halbach structure and the stator is composed of one permanent magnet ring and four copper coils. The new vacuum compatible gravity compensator can be applied to the 6-DOF high precision magnetic levitation stage as the vibration isolation and leveling device. Firstly, the analytical model of the magnetic levitation gravity compensator is established. The flux density distribution of the Halbach magnet array rings is obtained by using equivalent current model. Then the expressions of magnetic levitation forces and vertical stiffness are derived. Secondly, finite element method (FEM) is used to calculate the magnetic levitation forces in order to verify the analytical model. The results from FEM are in good agreement with the ones from analytical model, which indicates that the analytical model is accurate and reasonable. In addition, a cooling system for the magnetic levitation gravity compensator is designed and the thermal field of stator part is calculated. Last, the temperature rise experiment is achieved.
AB - In this paper, a novel cylindrical magnetic levitation gravity compensator is proposed, of which the mover is composed of several permanent magnet rings in the arrangement of Halbach structure and the stator is composed of one permanent magnet ring and four copper coils. The new vacuum compatible gravity compensator can be applied to the 6-DOF high precision magnetic levitation stage as the vibration isolation and leveling device. Firstly, the analytical model of the magnetic levitation gravity compensator is established. The flux density distribution of the Halbach magnet array rings is obtained by using equivalent current model. Then the expressions of magnetic levitation forces and vertical stiffness are derived. Secondly, finite element method (FEM) is used to calculate the magnetic levitation forces in order to verify the analytical model. The results from FEM are in good agreement with the ones from analytical model, which indicates that the analytical model is accurate and reasonable. In addition, a cooling system for the magnetic levitation gravity compensator is designed and the thermal field of stator part is calculated. Last, the temperature rise experiment is achieved.
UR - http://www.scopus.com/inward/record.url?scp=84909957822&partnerID=8YFLogxK
U2 - 10.1109/EML.2014.6920612
DO - 10.1109/EML.2014.6920612
M3 - Conference contribution
AN - SCOPUS:84909957822
T3 - Conference Proceedings - EML 2014 17th International Symposium on Electromagnetic Launch Technology
BT - Conference Proceedings - EML 2014 17th International Symposium on Electromagnetic Launch Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 17th International Symposium on Electromagnetic Launch Technology, EML 2014
Y2 - 7 July 2014 through 11 July 2014
ER -