RESEARCH OF THE METHOD FOR MEASURING THE PARAMETERS ON INSTANTANEOUS VALUES OF INPUT AND ADDITIONAL HARMONIC SIGNALS

Melent'ev Vladimir Sergeevich, doctor of technical sciences, professor, head of sub-department of information and measuring equipment, Samara State Technical University, vs_mel@mail.ru
Batishchev Vitaliy Ivanovich, doctor of technical sciences, professor, head of sub-department of information technology, Samara State Technical University, vib@list.ru
Muratova Vera Vladimirovna, postgraduate student, Samara State Technical University, muratova1991@yandex.ru

621.317

The paper presents the results of a study of the method of measurement parameters on instantaneous values of orthogonal components of harmonic signals, measured at an arbitrary time. Thus, the measurement time does not depend on the phase angle between the voltage and current and the input signal period. The estimation error due to non ideality of phase-shifting units engaged in the formation of additional signals. The results of the analysis of the effect of quantization of the instantaneous values of signals to the error of measurement informative parameters. The analytical expressions and graphs of the errors depending to the phase angle between voltage and current and the initial phase of the signal are presented.

harmonic signal, the signal parameters, the instantaneous values, orthogonal components, phase-shifting unit, the error in magnitude, quantization error.