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Electromagnetic method of the angular displacement monitoring

  • US 6,393,912 B2
  • Filed: 08/24/1999
  • Issued: 05/28/2002
  • Est. Priority Date: 08/14/1998
  • Status: Expired due to Term
First Claim
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1. A method for monitoring an angular displacement in a rotation plane about a rotation axis and related displacement parameters of a moving part, comprising:

  • mounting at least one electrodynamic profile on the moving part;

    placing at least one resonator in proximity to said electrodynamic profile;

    exciting in said resonator an alternating electromagnetic field at a frequency at which the electromagnetic field penetrates into the electrodynamic profile;

    measuring the variation of the electromagnetic field parameters, caused by displacement of the electrodynamic profile, said exciting of said resonator is by an electromagnetic field in the form of at least one slowed electromagnetic wave having energy distribution of the electric and magnetic fields in said electrodynamic profile suitable for the maximum influence of its movement; and

    measuring of variation of the slowed electromagnetic wave parameters, and comparing said measured parameters.

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