ON IMPROVEMENT OF SAMPLING TECHNIQUE DESIGNED FOR PRECISE ROOT MEAN SQUARE MEASUREMENTS<br />
Journal Title: Metrology and Measurement Systems - Year 2007, Vol 14, Issue 2
Abstract
A method for precise root mean square (RMS) measurement of periodic signals based on signal reconstruction is analysed. The RMS value of a signal under test is determined in three steps. In the first step, the Fourier coefficients are estimated from integrative samples, in the second step the estimators are corrected, using the method of least squares with constraints and precision measurement of rectified signal average, and in the third step the RMS value is calculated from the Fourier coefficient estimators. Properties of integrative samples are analysed and the problem of choosing the optimal integration time is discussed. It is shown that this approach, optimal reconstruction with correction, considerably increases the accuracy of the RMS measurements of low frequency signals.
Authors and Affiliations
ANDRZEJ MUCIEK
Keywords
Related Articles
- EP ID EP149815
- DOI -
- Views 87
- Downloads 0
2007 IEEE Instrumentation and Measurement Technology Conference
The annual Instrumentation and Measurement Technology Conference, sponsored by IEEE Instrumentation and Measurement Society (USA), was held this year in Poland. That conference, called IMTC 2007, was organized on May 1–3...
FIFTY YEARS OF RESEARCH AND ACADEMIC ACTIVITIES OF PROFESSOR<br /> EUGENIUSZ RATAJCZYK
This year professor Eugeniusz Ratajczyk celebrates the 50th anniversary of his work at Warsaw University of Technology and his 75th birthday. On this occasion an Anniversary Seminar was organized at the Faculty of Mechat...
THE EFFECT OF DOUBLE VENTURI'S STRUCTURAL PARAMETERS ON THE REINFORCEMENT VALUE AND FLOW COEFFICIENT
Reinforcement factor of a double Venturi is one of the more important parameters related to sensor shape and structure. The evaluation and the effect of the double Venturi's structural parameters on its value were carrie...
TENTH ANNIVERSARY OF CHAIR OF ELECTRONIC AND PHOTONIC<br /> METROLOGY WROCŁAW UNIVERSITY OF TECHNOLOGY
This year the Chair of Electronic and PhotonicMetrology from Wrocław University of Technology celebrates its 10th anniversary. The Chair was established by the Senate of Wrocław University of Technology on January 27, 19...
A STUDY ON THE FEASIBILITY AND EFFECTIVENESS OF DIGITAL FILTER APPLICATION FOR HARMONIC AND INTERHARMONIC MEASUREMENT IN COMPLIANCE WITH IEC 61000-4-7<br />
Large scale monitoring of power quality in electrical power plants is nowadays a pressing need due to the liberalization of the electrical market in many countries and the deeper interconnections of electrical networks....