Parametrically excited horizontal and rolling motion of a levitated body above a high-Tc superconductor

Toshihiko Sugiura, Takaaki Aoyagi, Hiroki Ura, Masatsugu Yoshizawa

Research output: Contribution to journalConference articlepeer-review

21 Citations (Scopus)


This research deals with a kind of parametric excitation of a permanent magnet freely levitated above a high-Tc superconductor excited in the vertical direction. We find the magnet has two vibration modes of linearly coupled horizontal translation and roll motion. These two modes are coupled nonlinearly with the vertical motion by the magnetic force and torque. Through nonlinear analysis and numerical simulation, this research discusses parametric resonance of each mode caused by vertical excitation at the frequency in the neighborhood of twice the natural frequency of that mode. Analytical and numerical results show qualitative agreement with experimental ones.

Original languageEnglish
Pages (from-to)2247-2250
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 II
Publication statusPublished - 2003 Jun
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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