FIELD: metrology.
SUBSTANCE: invention relates to metrology, particularly to means of measurement of torsion oscillations of shaft lines. System for monitoring of torsional vibrations comprises measuring information elements in form of teeth arranged on shaft of toothed disc, keyphasor information element, arranged in form of additional disk with single tooth or with single recess, fixed proximity sensors, as well as hardware-software unit. Device contains second keyphasor, wherein information elements and two sensors are installed at ends of two keyphasors shaft train, and location of measurement plane on it is determined by calculation of maximum sensitivity of given point of shaft line to harmonic effect of alternating torques. At that, transducers are arranged outside of shaft by two in every measurement plane at angle of 180 degrees relative to each other.
EFFECT: technical result is high accuracy of diagnostics.
1 cl, 2 dwg
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