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Title: Velocity damper for electromagnetically levitated materials

Abstract

A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
869346
Patent Number(s):
5319670
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
velocity; damper; electromagnetically; levitated; materials; damping; oscillatory; spinning; motions; induced; material; opposed; field; magnets; located; orthogonally; existing; levitation; coils; providing; dc; quadrupole; cusp; generating; nonconducting; avoid; eddy-current; heating; magnetic; permeability; distorting; induction; fields; levitation coil; magnetic permeability; magnetically levitated; quadrupole field; motions induced; electromagnetically levitated; /373/219/

Citation Formats

Fox, Richard J. Velocity damper for electromagnetically levitated materials. United States: N. p., 1994. Web.
Fox, Richard J. Velocity damper for electromagnetically levitated materials. United States.
Fox, Richard J. Sat . "Velocity damper for electromagnetically levitated materials". United States. https://www.osti.gov/servlets/purl/869346.
@article{osti_869346,
title = {Velocity damper for electromagnetically levitated materials},
author = {Fox, Richard J},
abstractNote = {A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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