METHOD OF MEASURING VECTORS OF HARMONIC SIGNALS WITH CONSTANT COMPONENT Russian patent published in 2017 - IPC G01R23/00 

FIELD: physics, measurement technology.

SUBSTANCE: invention relates to electrical and instrumentation technology. Signals G_j(t)=A_jsin(2πt/T_j+ϕ_0j), where have known periods T_j that are not multiples of each other and act together with a constant component W₀, wherein amplitudes A_j and initial phase shifts ϕ_0j of signals G_j(t) are determined from the relationships A_j=[(p_1j)²+(p_2j)²]^1/2 and ϕ_0j=arctg(p_1j/p_2j), where p_1j and p_2j are projections of vectors of signals G_j(t) on pairs of orthogonal reference signals, matching G_j(t) on frequency, and values p_lj, are obtained by non-uniform sampling of the sum signal and summation of its samples. Sampling is performed with instantaneous samples, which act at moments in time forming for p_lj, l=1,2 sets and , where ΔT_j=(2r±1)T_j/4, r=0, 1, 2, …, which are formed step by step according to the conditions: , where , , k_m=(2s+1), s=0, 1, 2, …, m is the step number, due to which signals G_n(t), are suppressed. Signals G_j(t) are numbered according to the condition T_j>T_j-1. Sets and are formed according to the condition , and signals W₀ and p_lj, are determined from the relationships: , where.

EFFECT: invention enables combined invariant real time measurement of a set of non-coherent harmonic signals.