Method for determining current eccentricity of rotating rotor and method of diagnostics of eccentricity of rotating rotor
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United States of America Patent
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Mar 14, 2017
Grant Date -
Aug 28, 2014
app pub date -
Sep 20, 2012
filing date -
Sep 21, 2011
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Abstract
A method is provided for determining current eccentricity of a rotating rotor which is equipped with a phase marker scanned at constant speed of rotation up to 500 rpm by a sensor of a phase marker at the point of the phase marker, and outside of the phase marker by at least one sensor of relative rotor vibrations, while after digitizing the signals of the sensors, estimates current position of the phasor of the 1st harmonic component of signal of the sensor of relative rotor vibrations in the complex plane, which is subsequently compared to a reference position of the phasor of the 1st harmonic component, which has been determined in advance, whereas the variation vector of the phasors is an image of eccentricity of the rotor. Further, a method of diagnostics of eccentricity of a rotating rotor is based on this method for determining current eccentricity.
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