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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 is disclosed. 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. 1 fig.

Inventors:
Publication Date:
OSTI Identifier:
7038037
Patent Number(s):
US 5319670; A
Application Number:
PPN: US 7-918095
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-101242
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Patent File Date: 24 Jul 1992
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; LEVITATED TRAINS; MECHANICAL VIBRATIONS; DAMPING; ELECTROMAGNETIC FIELDS; LEVITATION; MAGNETIC FIELDS; TRAINS; VEHICLES; 330300* - Advanced Propulsion Systems- Electric-Powered Systems; 320202 - Energy Conservation, Consumption, & Utilization- Transportation- Railway

Citation Formats

Fox, R.J. Velocity damper for electromagnetically levitated materials. United States: N. p., 1994. Web.
Fox, R.J. Velocity damper for electromagnetically levitated materials. United States.
Fox, R.J. Tue . "Velocity damper for electromagnetically levitated materials". United States.
@article{osti_7038037,
title = {Velocity damper for electromagnetically levitated materials},
author = {Fox, R.J.},
abstractNote = {A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material is disclosed. 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. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {6}
}