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RU2004106034A - METHOD FOR DETERMINING THE DIFFERENCE OF PHASES OF TWO SIGNALS - Google Patents

METHOD FOR DETERMINING THE DIFFERENCE OF PHASES OF TWO SIGNALS Download PDF

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Publication number
RU2004106034A
RU2004106034A RU2004106034/28A RU2004106034A RU2004106034A RU 2004106034 A RU2004106034 A RU 2004106034A RU 2004106034/28 A RU2004106034/28 A RU 2004106034/28A RU 2004106034 A RU2004106034 A RU 2004106034A RU 2004106034 A RU2004106034 A RU 2004106034A
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RU
Russia
Prior art keywords
signals
phases
determining
difference
fft
Prior art date
Application number
RU2004106034/28A
Other languages
Russian (ru)
Inventor
ков Владислав Александрович Поздн (RU)
Владислав Александрович Поздняков
ков Александр Дмитриевич Поздн (RU)
Александр Дмитриевич Поздняков
Original Assignee
ков Владислав Александрович Поздн (RU)
Владислав Александрович Поздняков
ков Александр Дмитриевич Поздн (RU)
Александр Дмитриевич Поздняков
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ков Владислав Александрович Поздн (RU), Владислав Александрович Поздняков, ков Александр Дмитриевич Поздн (RU), Александр Дмитриевич Поздняков filed Critical ков Владислав Александрович Поздн (RU)
Priority to RU2004106034/28A priority Critical patent/RU2004106034A/en
Publication of RU2004106034A publication Critical patent/RU2004106034A/en

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Claims (1)

Способ определения разности фаз двух сигналов u1(t) и u2(t), в соответствии с которым сигналы оцифровывают с частотой дискретизации ƒ∂ и создают два массива данных мгновенных значений по N элементов u1[i/ƒ∂] и u2[i/ƒ∂], отличающийся тем, что на полученные массивы накладывают временное окно и выполняют прямые преобразования Фурье, получая комплексные спектры S1[iƒ∂/N]=FFT(u1[i/ƒ∂]) и S2[iƒ∂/N]=FFT(u2[i/ƒ∂]), в комплексном спектре S1[iƒ∂/N] определяют номер М компоненты, амплитуда которой максимальна, находят фазы φ1 и φ2 спектральных компонент S1[Mƒ∂/N] и S2[Mƒ∂/N], определяют искомую разность фаз между сигналами u1(t) и u2(t) в соответствии с выражениями:The method for determining the phase difference of two signals u 1 (t) and u 2 (t), according to which the signals are digitized with a sampling frequency ƒ ∂ and create two data arrays of instantaneous values for N elements u 1 [i / ƒ ∂ ] and u 2 [i / ƒ ∂ ], characterized in that the arrays are superimposed with a time window and perform direct Fourier transforms, obtaining complex spectra S 1 [iƒ ∂ / N] = FFT (u 1 [i / ƒ ∂ ]) and S 2 [ iƒ ∂ / N] = FFT (u 2 [i / ƒ ∂ ]), in the complex spectrum S 1 [iƒ ∂ / N] determine the number M of the component whose amplitude is maximum, find the phases φ 1 and φ 2 of the spectral components S 1 [ M ƒ ∂ / N] and S 2 [Mƒ ∂ / N], determine the desired phase difference between the signals u 1 (t) and u 2 (t) in accordance with the expressions: Δφ=Δφ21 для 180≥Δ21≥-180;Δφ = Δφ 21 for 180≥Δ 21 ≥-180; Δφ=Δφ21-360 для Δφ21>180;Δφ = Δφ 21 -360 for Δφ 21 >180; Δφ=Δφ21+360 для Δφ21<-180,Δφ = Δφ 21 +360 for Δφ 21 <-180, где Δφ21=φ2-φ1.where Δφ 21 = φ 2 -φ 1 .
RU2004106034/28A 2004-03-01 2004-03-01 METHOD FOR DETERMINING THE DIFFERENCE OF PHASES OF TWO SIGNALS RU2004106034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2004106034/28A RU2004106034A (en) 2004-03-01 2004-03-01 METHOD FOR DETERMINING THE DIFFERENCE OF PHASES OF TWO SIGNALS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2004106034/28A RU2004106034A (en) 2004-03-01 2004-03-01 METHOD FOR DETERMINING THE DIFFERENCE OF PHASES OF TWO SIGNALS

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RU2004106034A true RU2004106034A (en) 2005-08-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2331078C1 (en) * 2007-03-26 2008-08-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method of determining phase displacement angle between two signals
RU2338213C1 (en) * 2007-05-28 2008-11-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method for phase shift angle defining between two signals represented by digital readings
RU2338212C1 (en) * 2007-05-28 2008-11-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method for defining phase shift angle between two signals represented by digital readings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2331078C1 (en) * 2007-03-26 2008-08-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method of determining phase displacement angle between two signals
RU2338213C1 (en) * 2007-05-28 2008-11-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method for phase shift angle defining between two signals represented by digital readings
RU2338212C1 (en) * 2007-05-28 2008-11-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method for defining phase shift angle between two signals represented by digital readings

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Effective date: 20070302