ELECTROMAGNETIC METHOD OF THE ANGULAR DISPLACEMENT MONITORING
First Claim
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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Abstract
A method and apparatus is disclosed for monitoring an angular displacement, such as angle position and the direction of displacement. The method and apparatus includes at least one resonator placed in proximity to a electrodynamic profile and exciting within said resonator an alternating electromagnetic field. The electromagnetic field should be at a frequency at which the electromagnetic field contacts the electrodynamic profile and then variations of the electromagnetic field parameters are measured for the resonator caused by rotating the electrodynamic profile. Excitation of the resonator is by an electromagnetic field in the form of at least one slowed electromagnetic wave having a suitable energy distribution of the electric and magnetic fields for measuring the electromagnetic field parameters.
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Citations
59 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for monitoring angular displacement in a rotation plane about a rotation axis of a moving part, comprising:
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at least one electrodynamic profile 1 for electric and magnetic fields mounted on the moving part 2 the displacement of the part 2 which is to be monitored, at least one resonator 4, including at least one matching plug 5, and a measuring circuit 6, including at least one radio frequency generator 7, at least one primary transducer 8 and a converter 9 converting and comparing electric signals into the parameter of angular displacement, said resonator including at least one section of a sensitive slow-wave structure set to distribute in a given ratio the components of an electric and magnetic fields in the electrodynamic profile, and connected to said matching plug;
said sensitive slow-wave structure further including at least two conductors, at least one of said conductors being an impedance conductor facing said electrodynamic profile. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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Specification