Velocity damper for electromagnetically levitated materials

Patent · Tue Jun 07 00:00:00 EDT 1994

OSTI ID:7038037

Fox, R J

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.

• DOE Contract Number: AC05-84OR21400
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5319670; A
• Application Number: PPN: US 7-918095
• OSTI ID: 7038037
• Resource Relation: Patent File Date: 24 Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

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