DIGITAL MEASUREMENT OF PHASE DIFFERENCE - A COMPARATIVE STUDY OF DSP ALGORITHMS
Journal Title: Metrology and Measurement Systems - Year 2005, Vol 12, Issue 4
Abstract
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.
Authors and Affiliations
MILOS SEDLACEK, MICHAL KRUMPHOLC
Keywords
Related Articles
- EP ID EP134146
- DOI -
- Views 96
- Downloads 0
POSITIONING THE SENSOR IN SAMPLING FLOWMETERS
Flow-rate measurements have very important meanings in industry. The sampling flowmeters are devices which can be used for measuring the flow-rate in situations where full-bore flowmeters cannot be used for technical or...
ANALYSIS OF THE IRREGULARLY SAMPLED SIGNALS ABOVE THE NYQUIST LIMIT
A new method of spectrum analysis of the nonuniformly sampled data above the Nyquist limit is proposed, which is based on the digital spectral shift to the baseband, optional filtering and the subsequent spectrum analysi...
METROLOGICAL ASPECTS IN MEASUREMENTS OF A SPECTRUM GENERATED AS THE RESULT OF SWITCHING AN ELECTRIC CIRCUIT<br />
This paper presents issues connected with experimentally specifying the envelope of spectral density of a signal which arises by the operation of switching an electric circuit. Furthermore, the paper discusses an applied...
HE INFLUENCE OF THE BALL MATERIAL ON THE BRINELL HARDNESS
A Brinell hardness tester with carbide and steel balls was calibrated and thereafter the hardness of ten samples of steel STN 41 1600 was measured by four appraisers. The uncertainty of calibration and of the hardness me...
APPLICATION OF A BAYESIAN ESTIMATOR FOR IDENTIFICATION OF EDIBLE OILS ON THE BASIS OF SPECTROPHOTOMETRIC DATA
Spectrophotometric analysis of oil mixtures, containing olive oil, is the subject of this paper. Its objective is to compare a new Bayesian estimator with the constrained least-squares estimator, when applied for estimat...