RU93018953A - METHOD OF MEASURING THE DIFFERENCE PHASES OF TWO SIGNALS - Google Patents

METHOD OF MEASURING THE DIFFERENCE PHASES OF TWO SIGNALS

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Publication number
RU93018953A
RU93018953A RU93018953/10A RU93018953A RU93018953A RU 93018953 A RU93018953 A RU 93018953A RU 93018953/10 A RU93018953/10 A RU 93018953/10A RU 93018953 A RU93018953 A RU 93018953A RU 93018953 A RU93018953 A RU 93018953A
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RU
Russia
Prior art keywords
signals
measuring
magnitudes
determining
signal
Prior art date
Application number
RU93018953/10A
Other languages
Russian (ru)
Other versions
RU2040002C1 (en
Inventor
Б.Г. Келехсаев
Original Assignee
Б.Г. Келехсаев
Filing date
Publication date
Application filed by Б.Г. Келехсаев filed Critical Б.Г. Келехсаев
Priority to RU93018953A priority Critical patent/RU2040002C1/en
Priority claimed from RU93018953A external-priority patent/RU2040002C1/en
Application granted granted Critical
Publication of RU2040002C1 publication Critical patent/RU2040002C1/en
Publication of RU93018953A publication Critical patent/RU93018953A/en

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Claims (1)

Способ используется в измерительной технике при определении разности фаз двух гармонических сигналов. Цель: повышение точности измерений. Сущность изобретения: измеряют разность фаз двух сигналов путем деления величин одного на величины другого отфильтрованных сигналов, получения сигнала-частного f(t), измерения его двух мгновенных значений, производимых на интервале сигнала-делителя в моменты времени t1 и t2, соответствующие четверти его полупериода, и определения сдвига фаз F0 между сигналами по формуле: F0 = Nn + arctg [f(t1) - f(t2)] / [f(t1) + f(t2)], где n = 0, если f(t1) > f(t2), f(t1) > f(t2) или f(t1 < f(t2), F(t1) < F(t2) или f(t1) = f(t2), f(t1) < f(t2) или f(t1) = f(t2) < 0; n = -1, если f(t1 < f(t2), f(t1) > f(t2) или f(t1) = f(t2) < 0. Положительный эффект: низкая погрешность измерения даже на инфранизких частотах, не требуется определения фазовых соотношений между сигналами, допускаются искажения в одном из сигналов в области его экстремальных значений, не влияющие на точность измерений.The method is used in measuring equipment in determining the phase difference of two harmonic signals. Goal: increase the accuracy of measurements. The essence of the invention: measure the phase difference of two signals by dividing the magnitudes of one by the magnitudes of the other filtered signals, obtaining a signal-private f (t), measuring its two instantaneous values produced at the interval of the signal-divider at times t 1 and t 2 , the corresponding quarters its half period, and determining the phase shift F0 between the signals by the formula: F0 = N n + arctg [ f (t 1) - f (t 2)] / [f (t 1) + f (t 2)], where n = 0 if f (t 1 )> f (t 2 ), f (t1)> f (t2) or f (t 1 <f (t 2 ), F (t1) <F (t2) or f (t 1 ) = f (t 2 ), f (t1) <f (t2) or f (t 1 ) = f (t2) <0; n = -1 if f (t 1 <f (t 2 ), f ( t1)> f (t2) or f (t 1) = f (t 2) <0. Positive flax effect: lowest measurement error even at subsonic frequencies, does not require determination of the phase relations between the signals allowed distortion in one of its extreme values of the signals do not affect the measurement accuracy.
RU93018953A 1993-04-13 1993-04-13 Method for determining phase difference of two signals RU2040002C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93018953A RU2040002C1 (en) 1993-04-13 1993-04-13 Method for determining phase difference of two signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93018953A RU2040002C1 (en) 1993-04-13 1993-04-13 Method for determining phase difference of two signals

Publications (2)

Publication Number Publication Date
RU2040002C1 RU2040002C1 (en) 1995-07-20
RU93018953A true RU93018953A (en) 1996-02-20

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Application Number Title Priority Date Filing Date
RU93018953A RU2040002C1 (en) 1993-04-13 1993-04-13 Method for determining phase difference of two signals

Country Status (1)

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RU (1) RU2040002C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD3664C2 (en) * 2006-12-25 2009-02-28 Акционерное Общество Научно-Исследовательский Институт "Eliri" Process for determining the difference in phase and the amplitude ratio of two periodic signals
RU2463701C2 (en) * 2010-11-23 2012-10-10 Государственное образовательное учреждение высшего профессионального образования Московский технический университет связи и информатики (ГОУ ВПО МТУСИ) Digital method and device to determine instantaneous phase of received realisation of harmonic or quasiharmonic signal
RU2577828C1 (en) * 2015-02-19 2016-03-20 Открытое акционерное общество "Научно-производственное объединение "СПЛАВ" Method of measuring phase shift of low frequency filter synchronous detector

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