FIELD: electrics, engineering, physics.
SUBSTANCE: invention relates to electrical engineering. The method base on using of the definite integral value over the time parameter from the integrand, determined by the product of two time functions, first of which is non-sinusoidal signal and the second time function is sinusoidal electric signal with independent variable which consist of two terms, first these terms is connect with harmonic frequency and with time and the second term, which was added in according with invitation, is variable initial phase angle of the second electric signal and the value of an integral over time is becoming dependent on the value of a variable initial phase angle of oscillation of the second factor of the integrand. According to the invention obtained dependence by means of one of the three proposed algorithms are used to determine the amplitude and initial phase angle of harmonic's oscillations, which is a part of the structure of non-sinusoidal electric signal.
EFFECT: increased speed and accuracy.
4 cl, 2 dwg
