Modeling and analysis of a novel magnetic levitation gravity compensator

He Zhang, Baoquan Kou, Weiduo Zhao, Yinru Bai

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationConference Proceedings - EML 2014 17th International Symposium on Electromagnetic Launch Technology
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479927333
DOIs
Publication statusPublished - 10 Oct 2014
Externally publishedYes
Event2014 17th International Symposium on Electromagnetic Launch Technology, EML 2014 - San Diego, United States
Duration: 7 Jul 201411 Jul 2014

Publication series

NameConference Proceedings - EML 2014 17th International Symposium on Electromagnetic Launch Technology

Conference

Conference2014 17th International Symposium on Electromagnetic Launch Technology, EML 2014
Country/TerritoryUnited States
CitySan Diego
Period7/07/1411/07/14

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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