FR2225753A1 - Instantaneous measure of electrical phase differences - between signals of arbitrary waveshape involves calculation of sines and cosines - Google Patents

Instantaneous measure of electrical phase differences - between signals of arbitrary waveshape involves calculation of sines and cosines

Info

Publication number
FR2225753A1
FR2225753A1 FR7312771A FR7312771A FR2225753A1 FR 2225753 A1 FR2225753 A1 FR 2225753A1 FR 7312771 A FR7312771 A FR 7312771A FR 7312771 A FR7312771 A FR 7312771A FR 2225753 A1 FR2225753 A1 FR 2225753A1
Authority
FR
France
Prior art keywords
signals
sines
cosines
phase differences
electrical phase
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7312771A
Other languages
French (fr)
Other versions
FR2225753B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7312771A priority Critical patent/FR2225753A1/en
Publication of FR2225753A1 publication Critical patent/FR2225753A1/en
Application granted granted Critical
Publication of FR2225753B1 publication Critical patent/FR2225753B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Phase Differences (AREA)

Abstract

An analogue computation method permits measurements of the sine and cosine of the instantaneous phase angle between two electrical signals which need not be sinusoidal or periodic. The mathematical treatment is based on Fresnel's theory of phase in which two envelope signals E1 and E2 are derived, multiplied together and introduced later in the circuit to give the desired result. The input signals are applied to a quadrature filter 3, 4. Each filter gives two outputs x1, y1 and x2, y2. Each is squared 9, 10, 13, 14 applied to adding units 17, 18 and square-rooted 21, 23. Thus the envelope signals are the algebraic resultant respectively of x1, y1 and x2, y2 and would for sine waves be the instantaneous amplitude of the input.
FR7312771A 1973-04-10 1973-04-10 Instantaneous measure of electrical phase differences - between signals of arbitrary waveshape involves calculation of sines and cosines Granted FR2225753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7312771A FR2225753A1 (en) 1973-04-10 1973-04-10 Instantaneous measure of electrical phase differences - between signals of arbitrary waveshape involves calculation of sines and cosines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7312771A FR2225753A1 (en) 1973-04-10 1973-04-10 Instantaneous measure of electrical phase differences - between signals of arbitrary waveshape involves calculation of sines and cosines

Publications (2)

Publication Number Publication Date
FR2225753A1 true FR2225753A1 (en) 1974-11-08
FR2225753B1 FR2225753B1 (en) 1979-02-23

Family

ID=9117673

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7312771A Granted FR2225753A1 (en) 1973-04-10 1973-04-10 Instantaneous measure of electrical phase differences - between signals of arbitrary waveshape involves calculation of sines and cosines

Country Status (1)

Country Link
FR (1) FR2225753A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514901A1 (en) * 1981-10-15 1983-04-22 Onera (Off Nat Aerospatiale) Amplitude and phase comparator for target identification - has processor calculating modulus and argument from processed sampled signal data taken within wave period of signal
US4598310A (en) * 1982-10-28 1986-07-01 U.S. Philips Corporation Circuit arrangement for obtaining a phase-sensitive control quantity, in particular in a color television receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514901A1 (en) * 1981-10-15 1983-04-22 Onera (Off Nat Aerospatiale) Amplitude and phase comparator for target identification - has processor calculating modulus and argument from processed sampled signal data taken within wave period of signal
US4598310A (en) * 1982-10-28 1986-07-01 U.S. Philips Corporation Circuit arrangement for obtaining a phase-sensitive control quantity, in particular in a color television receiver

Also Published As

Publication number Publication date
FR2225753B1 (en) 1979-02-23

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Legal Events

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