Digital measurement of phase difference - a comparative study of DSP algorithms

• Autorzy: Sedlacek, M. , Krumpholc, M.

Warianty tytułu

PL

Cyfrowy pomiar przesunięcia fazowego - studium porównawcze algorytmów CSP

• Języki publikacji: EN

Abstrakty

EN

The paper compares nine methods of measurement of the phase difference of digitized sinusoidal signals mainly according to their sensitivity to sampling non-integer number of signal periods. The investigated methods can be classified into four groups - modifications of classical zero-crossing based measurements, virtual vector voltmeter, DFT-based measurements, and modifications of sine-wave fit algorithm. Results of both simulations and measurements are presented.

PL

W artykule porównano 10 metod pomiaru przesunięcia fazowego pod względem ich wrażliwości na niecałkowitą liczbę próbek w okresie sygnału. Rozpatrywane metody zostały podzielone na 4 grupy - zmodyfikowane metody oparte na detekcji przejścia przez zero, pomiary bazujące na DFT, metody wirtualnego woltomierza wektorowego i zmodyfikowane algorytmy dopasowania przebiegów sinusoidalnych. Przedstawiono wyniki symulacji i pomiarów.

Słowa kluczowe

PL

pomiar przesunięcia fazowego; algorytmy CPS

EN

phase difference measurement; DSP algorithms of phase difference estimation

• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2005
• Tom: Vol. 12, nr 4
• Strony: 427-448
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr.

Twórcy

autor

Sedlacek, M.

• Czech Technical University in Prague, Faculty of Electrical Engineering, CZ-166 27 Czech Republic,

autor

Krumpholc, M.

• Czech Technical University in Prague, Faculty of Electrical Engineering, CZ-166 27 Czech Republic

Bibliografia

• 1. Krumpholc M., Sedlacek M: Measurement of phase difference using DSP algorithms by non-coherent sampling, Proc. of the 14th International Symposium on New Technologies in Measurement and Instrumentation, IMEKO TC-4, vol. I, Gdynia, Poland, September 2005, pp. 229-234.
• 2. Ibrahim K.M., Abdul-Karim M.A.H.: A Novel Digital Phase Meter, IEEE Trans. Instrum. Meas., vol. IM-36, no. 3, October 1989, pp. 711-715.
• 3. Wagdy M.F, Lucas, M. S. P.: Errors in Sampled Data Phase Measurement, IEEE Trans. Instrum. Meas., vol. IM-34, no. 4, December 1985, pp. 507-509.
• 4. Mahmud S. M: High Precision Phase Measurement Using Adaptive Sampling, IEEE Trans. Instrum. Meas., vol. 38, no. 5, October 1989, pp. 954-960
• 5. Micheletti, R.: Phase Angle Measurement Between Two Sinusoidal Signals, IEEE Trans. Instrum. Meas., vol. 40, no. 1, February 1991 pp. 6-9.
• 6. Sedlacek M.: Digital measurement of phase difference of LF signals - a comparison of DSP algorithms, Proc. of XVII IMEKO World Congress, Dubrovnik, June 2003, pp. 639-644.
• 7. Schoukens J., Pintelon R., Van hamme H: The interpolated Fast Fourier Transform: A Comparative Study, IEEE Trans. Instrum. Meas., vol. 41, no. 2, April 1992, pp. 226-232.
• 8. Andria G., Savino, M., Trotta A: Windows and Interpolation Algorithms to Improve Electrical Measurement Accuracy, IEEE Trans. Instrum. Meas., vol. 38, no. 4, August 1989, pp. 856-863.
• 9. Agrez D.: Interpolation in the frequency domain to improve phase measurement, Proc. of XVII IMEKO World Congress, Dubrovnik, June 2003, pp. 446-450.
• 10. Agrez D.: Improving Phase Estimation With Leakage Minimization, IEEE Trans. Instrum. Meas., vol. 54, no. 4, pp. 1347-1353, August 2005, pp. 1347-1353.
• 11. Ramos P. M., Da Silva F., Cruz Serra V: Improving sine-fitting algorithms for amplitude and phase measurements phase measurements, Proc. of XVII IMEKO World Congress, Dubrovnik, June 2003, pp. 614-619.
• 12. IEEE Std. 1241-2000 Standard for Analog to Digital Converters, New York, 2001.
• 13. IEC 61000-2-2, Electromagnetic Compatibility, Part.2 - Environment, Section 2: Compatibility levels for LF conducted disturbances and signaling in public low-voltage power supply systems, IEC, Switzerland, 1990.
• 14. Enden A., W. M., Verhoeck, N. A. M: Discrete-Time Signal Processing, Prentice Hall, 1989.