Magnetic stiffness of a coupled high-Tc superconducting levitation system

T. Sugiura, H. Ura, K. Kuroda

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)


High-Tc superconducting levitation systems, such as flywheels and linear-drives, have very small damping, because of their no contact support. Thus, they can show complicated phenomena of dynamics due to nonlinearity in their magnetic force or torque. In mechanical design of such systems, it is important to evaluate their nonlinear dynamics, though it has not been well studied so far. As one modeling of such an application system, we consider a magnetically coupled system of several permanent magnets and high-Tc superconducting bulks. It is a multi-degree-of-freedom dynamical system showing complicated motion caused by nonlinear interaction between levitated magnets and superconducting bulks. This research deals with magnetic stiffness of a coupled superconducting levitation system. As a fundamental dynamical property of the system, we evaluate the stiffness by doing experiment and analysis, and examine nonlinear effect on this property.

Original languageEnglish
Pages (from-to)648-653
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 2003 Oct
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13


  • Magnetic stiffness
  • Nonlinear dynamics
  • Superconducting levitation

ASJC Scopus subject areas

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


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