Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Spatial Stability of the Conductive Rod Conveyed by Double Electrodynamic Wheels

이중 동전기 휠에 의해 반송되는 도전성 환봉의 공간 안정성

  • Jung, Kwang-Suk (Department of Mechanical Engineering, Korea National University of Transportation)
  • 정광석 (한국교통대학교 기계공학과)
  • Received : 2011.12.06
  • Accepted : 2012.02.27
  • Published : 2012.08.01
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Abstract

Putting a conductive rod between rotating axial electrodynamic wheels composed of repetitive permanent magnets, three-axial magnetic forces generate on the conductive rod. It is possible to levitate and transfer the rod on space with the forces. However, the forces vary in direction and magnitude for a position of the rod between the electrodynamic wheels. Thus, the position influences the stability of the rod also. To guarantee the stability of a levitated object, the force acting on the object should have negative stiffness like a spring. So, we analyze the stable operating range of the conductive rod levitated by the axial wheels with the commercial finite element tool in this paper. Specially, as the pole number and the radial width of permanent magnets has much influence on the generated force and thereby the stable region, their sensitivities are analyzed also. The analytic result is compared with experimental result.

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  1. Non-Contact Manipulation of Conductive Rod using Axial Magnet Wheels vol.19, pp.7, 2013, https://doi.org/10.5302/J.ICROS.2013.13.1881