METHOD FOR DETERMINING ERROR OF AMPLITUDE DIGITAL ANGLE TRANSFORMERS OF TRACKING TYPE Russian patent published in 2006 - IPC H03M1/48 

FIELD: measuring equipment engineering, possible use for production of amplitude digital angle transformers of tracking type, including production of high-precision digital angle transformers, and also can be used during control of technical state of digital angle transformers included in composition of digital range-finding system.

SUBSTANCE: method includes setting starting speed of digital angle transformer shaft, at which value of doubled frequency of alternation of level of voltage of highest bit of output code of checked digital angle transformer exceeds lower limit value of frequency of linear portion of logarithmic amplitude-frequency characteristic of disconnected digital angle transformer, crossing abscissa axis through cut frequency with inclination minus 20 decibel/dc; output voltage of correcting link of discrepancy channel of checked digital angle transformer is integrated by time within limits of period of alternation of this voltage; value of integrated signal is measured and recorded, which corresponds to error of checked digital angle transformer.

EFFECT: realization of time-effective and precise determination of error of amplitude digital angle transformer of tracking type by means of measuring of appropriate voltage of direct current during rotation of shaft o digital angle transformer.

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