Reducing resonant vibration of a rotor by tuning the gap between a superconducting bulk and a permanent magnet

Y. Yubisui, R. Amano, T. Sugiura

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

This study investigated passing through a critical speed of a rotor supported by a superconductor with an electromagnet. Here we adopted the idea that the gap between the superconductor and the rotor can be tuned variably by using electromagnetic force of the electromagnet so that the natural frequency or the stiffness can be changed. By using this method, it can be expected that resonant vibration be reduced. We developed an analytical model and then carried out numerical simulation. Numerical results show that considerable reduction of the resonant amplitude can be achieved by proper tuning of switching the electromagnet.

Original languageEnglish
Pages (from-to)253-256
Number of pages4
JournalPhysics Procedia
Volume45
DOIs
Publication statusPublished - 2013 Jan 1
Event25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan
Duration: 2012 Dec 32012 Dec 5

Keywords

  • Electromagnets
  • High-Tc superconductors
  • Nonlinear dynamical systems
  • Rotors
  • Vibrations

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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