Title :
A Method for Precise RMS Measurements of Periodic Signals by Reconstruction Technique With Correction
Author :
Muciek, Andrzej Konstanty
Author_Institution :
Wroclaw Univ. of Technol.
fDate :
4/1/2007 12:00:00 AM
Abstract :
In this paper, a method for precise rms measurement of periodic signals based on signal reconstruction is presented. Reconstruction is performed in two steps. In the first step, the Fourier coefficients are estimated from integrative samples, and in the second step, using the method of least squares and precision measurement of rectified-signal average, the estimators are corrected. It is shown that this approach considerably increases accuracy of the rms measurements of low-frequency signals
Keywords :
Fourier transforms; least squares approximations; signal reconstruction; Fourier coefficients; RMS measurements; correction; integrative sampling; least squares method; periodic signals; precision measurement; rectified-signal average; root mean square measurements; signal reconstruction; Helium; Instruments; Laboratories; Least squares approximation; Measurement standards; Measurement uncertainty; Root mean square; Sampling methods; Signal reconstruction; Voltage; Integrative sampling; root mean square (rms) measurements; s ignal reconstruction;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2007.891096
