Effects of spin-up rate on internal resonance in a high-Tc superconducting bearing system

Tatsuya Suda, Tomohiko Tange, Toshihiko Sugiura, Masatsugu Yoshizawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This research investigates transient behaviors of a rotor passing through resonance in a high-Tc superconducting bearing system. Such a low-damping multi-degree-of-freedom system, subjected to nonlinear force, can show complex dynamical behaviors, in which energy transfer occurs between modes through nonlinear coupling. Our numerical and experimental results show that, in a system of a high-Tc superconducting bearing, internal resonance can occur even in transient cases where the rotor passes through resonance. Effects of the internal resonance and also effects of the spin-up rate on the transient dynamics of the rotor have been examined and clarified by changing the period of increasing voltage applied to a D.C. motor for rotating the rotor.

Original languageEnglish
Article number5109622
Pages (from-to)2099-2102
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2009 Jun 1


  • Coupled vibration
  • Internal resonance
  • Nonlinear dynamics
  • Passing through resonance
  • Superconducting levitation

ASJC Scopus subject areas

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


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