A Dynamic Method of Determining the Stiffness and Cross Axis Stability of a Repulsion Magnetic Bearing.

Abstract

Magnet bearing support systems are becoming of increasing interest in satellite and other engineering projects. In order to design such systems a knowledge of the bearing stiffness is required. This Report analyses the dynamics of a repulsive type magnet bearing and proposes a simple pendulum experiment to determine the radial stiffness by measuring the vibration frequency. The analysis, based on the potential energy of the system, shows the relationship between radial stiffness and the pendulum arm length and also predicts a rotational stability condition, namely that the bearing length to diameter ratio must be greater than sq root 3 for stability. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1977
Accession Number
ADA052092

Entities

People

  • R. N. A. Plimmer

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bearings
  • Bessel Functions
  • Diameters
  • Displacement
  • Energy
  • Engineering
  • Equations
  • Foreign Languages
  • Frequency
  • Integrals
  • Magnetic Bearings
  • Magnetic Fields
  • Magnets
  • Potential Energy
  • Spatial Distribution
  • Stability Conditions
  • Thickness

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Electrical Engineering
  • Theoretical Analysis.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Spacecraft Maneuvers