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Title: Electrostatic stabilizer for a passive magnetic bearing system

Abstract

Electrostatic stabilizers are provided for passive bearing systems composed of annular magnets having a net positive stiffness against radial displacements and that have a negative stiffness for vertical displacements, resulting in a vertical instability. Further embodiments are shown of a radial electrostatic stabilizer geometry (using circuitry similar to that employed in the vertical stabilizer). This version is suitable for stabilizing radial (lateral) displacements of a rotor that is levitated by annular permanent magnets that are stable against vertical displacements but are unstable against radial displacements.

Inventors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1328695
Patent Number(s):
9,464,670
Application Number:
14/928,729
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Oct 30
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Post, Richard F. Electrostatic stabilizer for a passive magnetic bearing system. United States: N. p., 2016. Web.
Post, Richard F. Electrostatic stabilizer for a passive magnetic bearing system. United States.
Post, Richard F. Tue . "Electrostatic stabilizer for a passive magnetic bearing system". United States. doi:. https://www.osti.gov/servlets/purl/1328695.
@article{osti_1328695,
title = {Electrostatic stabilizer for a passive magnetic bearing system},
author = {Post, Richard F},
abstractNote = {Electrostatic stabilizers are provided for passive bearing systems composed of annular magnets having a net positive stiffness against radial displacements and that have a negative stiffness for vertical displacements, resulting in a vertical instability. Further embodiments are shown of a radial electrostatic stabilizer geometry (using circuitry similar to that employed in the vertical stabilizer). This version is suitable for stabilizing radial (lateral) displacements of a rotor that is levitated by annular permanent magnets that are stable against vertical displacements but are unstable against radial displacements.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 11 00:00:00 EDT 2016},
month = {Tue Oct 11 00:00:00 EDT 2016}
}

Patent:

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