ERROR ARISING WHEN THE TRANSFORMATION COEFFICIENT
OF THE DIFFERENTIAL FREQUENCY SENSOR IS MEASURED

Trofimov Vadim Yur'evich, candidate of technical sciences, head of department 2, Scientific and Production Association «Poisk» (3 Lesnaya street, Myrino, Leningrad region, Russia), Trovadji@ya.ru
Shakhmeyster Leonid Efimovich, doctor of technical sciences, deputy director general for research and development, Scientific and Production Association «Poisk» (3 Lesnaya street, Myrino, Leningrad region, Russia), lsh43@mail.ru

681.2.088

Background. The aim is the conversion coefficient of the differential frequency sensor using two possible methods and the analysis of the obtained errors associated with the use of these methods.
Materials and methods. Measurement of the transformation coefficient of the differential frequency sensor either both the differential frequency of sensor’s channels and the second channel impulses delay in comparison with the first channel impulses are measured at the beginning and at the end of differential frequency measured period or each channel’s frequency is measured separately.
Results. The measurement of the difference frequency without delay has an error of discreteness determination of the conversion factor is about 20 times larger than the error of other options. The accuracy of determining the conversion factor due to the discreteness of the measurements, the measurement of the difference frequency, given measurements of the delays equals that of the error in the measurement frequency of each sensor channel.
Conclusions. Errors arising when the transformation coefficient of the differential frequency sensor is measured with both methods differ a little.

frequency sensors, errors the transformation coefficient of the differential frequency, sensor signals processing.