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Атестація метрологічних характеристик волоконно-оптичних датчиків положення

Атестація метрологічних характеристик волоконно-оптичних датчиків положення

Abstract

The questions of normalized values control of fiber-optic strain transducers output parameters, position and displacements are considered. Knowledge of the normalized values of these parameters makes it possible to correct the results and thereby increase the accuracy (reduce the uncertainty) of the measurements.The main parameters characterizing fiber-optic sensors are: the conversion coefficient of the rotation angle / displacement into the output signal and the zero drift. The drift caused mainly by the shot noise of the photo detectors, and the dispersion of the conversion coefficients is the possible boundary value of the sensors effective application, i.e. their accuracy. In this case, for each manufactured batch of products it is necessary to note the certified value and the margin of error and / or the expanded uncertainty of this value.Studying the set of sensors under repeatability conditions, the dispersion of the results is due only to the influence of a random variable-the drift of the zero line. The variance of the overall average of the results of m-fold measurements of the characteristics of n selected sensor instances will also depend on the dispersion of the characteristics of the sensors array. For a separate estimation of the influence of the random measurement error and the sensors inhomogeneity one-way dispersion analysis is used on the basis of which an estimate of the variance between the sensors in the manufactured batch of products is obtained. On the basis of this variance estimate and average value, the upper and lower limit values are set in which contain the normalized parameter with the probability of 0,95.

Рассматриваются вопросы контроля нормированных значений выходных параметров оптоволоконных преобразователей деформаций, положения и перемещений. Знание нормированных значений этих параметров дает возможность корректировать результаты и тем самым повышать точность (уменьшать неопределенность) измерений. Для решения этой задачи предлагается использовать дисперсионный анализ.

Розглядаються питання контролю нормованих значень вихідних параметрів оптоволоконних перетворювачів деформацій, положення та переміщення. Знання нормованих значень цих параметрів надає можливість корегувати результати і тим самим підвищувати точність (зменшувати невизначеність) вимірювань. Для вирішення цієї задачи пропонується використовувати дисперсійний аналіз.

Keywords

волоконно-оптичні датчики; похибка; дисперсійний аналіз, волоконно-оптические датчики; погрешность; дисперсионный анализ, Fibre optic; Еrror; ANOVA

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold