Characterization of analogue-to-digital converters of a commercial digital voltmeter in the 20 Hz to 400 Hz frequency range

Espel, Patrick; Polétaeff, A.; Bounouh, Alexandre

doi:10.1088/0026-1394/46/5/023

Cited by 22 publications

(25 citation statements)

References 9 publications

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“…These sampling voltmeters have a high-resolution integrating ADC (IADC) that operates according to the dual slope principle. The sampling process is such that the sampling instant is not a discrete point in time, but the measured signal is integrated by IADC over the aperture time of AD converter [20][21][22][23][24][25][26][27].…”

Section: Bias Of Phase Difference Measurement Resultsmentioning

confidence: 99%

Evaluation of Uncertainty of Phase Difference Determination in Presence of Bias

Saranovac¹,

Vučijak²

2016

Metrology and Measurement Systems

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Determination of the phase difference between two sinusoidal signals with noise components using samples of these signals is of interest in many measurement systems. The samples of signals are processed by one of many algorithms, such as 7PSF, UQDE and MSAL, to determine the phase difference. The phase difference result must be accompanied with estimation of the measurement uncertainty. The following issues are covered in this paper: the MSAL algorithm background, the ways of treating the bias influence on the phase difference result, comparison of results obtained by applying MSAL and the other mentioned algorithms to the same real signal samples, and evaluation of the uncertainty of the phase difference.

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Section: Bias Of Phase Difference Measurement Resultsmentioning

confidence: 99%

Evaluation of Uncertainty of Phase Difference Determination in Presence of Bias

Saranovac¹,

Vučijak²

2016

Metrology and Measurement Systems

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“…La caractérisation dynamique a été effectuée en comparant les mesures de la valeur efficace des signaux par les techniques d'échantillonnage aux mesures effectuées au moyen de convertisseurs thermiques [2]. On a défini l'erreur e AC comme la différence relative entre les valeurs mesurées par les deux techniques.…”

Section: Caractérisation Dynamiqueunclassified

Nouvelles possibilités d’étalonnage en puissance électrique au LNE

Espel¹,

Polétaeff²

2011

R. franç. métrol.

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RésuméL'article présente les nouvelles possibilités d'étalonnage en puissance électrique au LNE. L'étalon primaire est basé sur les techniques d'échantillonnage. Les signaux de tension et de courant sont numérisés puis traités par transformée de Fourier discrète. Jusqu'à présent, cet éta-lon avait été caractérisé pour les mesures de puissance active en régime sinusoïdal, dans la plage de fréquences 45 Hz-65 Hz. Désormais, il permet d'effectuer des raccordements en puissances active et réactive et le domaine de fréquences a été étendu jusqu'à 400 Hz. MOTS CLÉS : WATTMÈTRE NUMÉRIQUE, PUISSANCES AC-TIVE ET RÉACTIVE, BILAN D'INCERTITUDE. Abstract

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“…The ADCs of the DVM have already been characterized for static [4] and dynamic [5] conditions, for sine waves at frequencies up to 400 Hz. In this frequency range, selecting optimized sampling parameters, the agreement between the sampling technique and AC-DC transfer using thermal converters has been found better than 3 µV/V.…”

Section: A Characterization Of the Analog-to-digital Converters (Adcmentioning

confidence: 99%

“…Taking into account the different sources of errors [5], the relative uncertainty (1σ) is estimated to be 3 µV/V at 50 Hz.…”

Section: Uncertainty Analysis For the Effective Valuementioning

confidence: 99%

Traceability of Voltage Measurements for Non-Sinusoidal Waveforms

Espel¹,

Polétaeff²,

Ndilimabaka³

2010

Measurement Science Review

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This paper describes the result of work performed at the Laboratoire National de Métrologie et d'Essais (LNE) aiming at developing a standard system to measure RMS value and harmonic contents of distorted voltage waveforms by means of a sampling voltmeter. Thermal converters are used to trace the RMS value to the SI units. The error of the DVM has been generally found less than 10 µV/V up to 2 kHz but can reach about 50 µV/V at 2.5 kHz for RMS voltage measurements for sine waves. For distorted waveforms, deviations within 15 µV/V have been obtained whatever the total harmonic distortion of the waveforms.

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Characterization of analogue-to-digital converters of a commercial digital voltmeter in the 20 Hz to 400 Hz frequency range

Cited by 22 publications

References 9 publications

Evaluation of Uncertainty of Phase Difference Determination in Presence of Bias

Evaluation of Uncertainty of Phase Difference Determination in Presence of Bias

Nouvelles possibilités d’étalonnage en puissance électrique au LNE

Traceability of Voltage Measurements for Non-Sinusoidal Waveforms

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