Journal article Open Access
Uncertainty Evaluation on the Absolute Phase Error of Digitizers
Delle Femine, Antonio;
Gallo, Daniele;
Landi, Carmine;
Luiso, Mario
In many engineering applications the phase angle of a signal is a key parameter. Especially when measuring small angles, the measurement accuracy is of a vital importance. Often, the absolute phase error of a digitizer, which is defined as the phase displacement between the digitized output and the input analog waveform and which represent a systematic measurement error, is neglected. Therefore, in this paper a new measurement technique for the evaluation of this absolute phase error is discussed, along with a deep theoretical analysis on the uncertainty sources and how to handle them. The measurement technique is validated through a high accuracy experimental setup. Experimental tests demonstrate that even high accuracy digitizers can show non-linear behavior in the absolute phase errors.
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Uncertainty Evaluation on the Absolute Phase Error of Digitizers.pdf
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- Publication date:
- November 7, 2019
- DOI:
-
- Keyword(s):
- Phase Measurement, Digitizer, Calibration, Discrete Fourier Transform, Phasor Measurement Unit, Synchrophasor, Digital Low Power Instrument Transformer.
- Published in:
- Transactions of the Institute of Measurement and Control:.
- Related identifiers:
- Identical to
- 10.1177/0142331219879836 (Journal article)
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International