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FR2221876A1 - Digital coder divides angles sine - by sum or difference of angular sine and cosine - Google Patents

Digital coder divides angles sine - by sum or difference of angular sine and cosine

Info

Publication number
FR2221876A1
FR2221876A1 FR7309272A FR7309272A FR2221876A1 FR 2221876 A1 FR2221876 A1 FR 2221876A1 FR 7309272 A FR7309272 A FR 7309272A FR 7309272 A FR7309272 A FR 7309272A FR 2221876 A1 FR2221876 A1 FR 2221876A1
Authority
FR
France
Prior art keywords
sine
cosine
sum
difference
angles
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
FR7309272A
Other languages
French (fr)
Other versions
FR2221876B1 (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.)
Thales SA
Original Assignee
Dassault Electronique SA
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 Dassault Electronique SA filed Critical Dassault Electronique SA
Priority to FR7309272A priority Critical patent/FR2221876A1/en
Publication of FR2221876A1 publication Critical patent/FR2221876A1/en
Application granted granted Critical
Publication of FR2221876B1 publication Critical patent/FR2221876B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/64—Analogue/digital converters with intermediate conversion to phase of sinusoidal or similar periodical signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

The digital coder consists of an adder to add the sine of the angle either to its cosine or its sign-inverted cosine. The sign conversion is determined by two switches controlled by logic and selecting either the input or output of a sign inverter. The adder output is passed to a division cct. to form the code value which is then stored. The switching logic is controlled by the outputs of two comparators which compare the angle sine and cosine with a constant reference voltage to determine which is the greater, thus keeping the final code value positive.
FR7309272A 1973-03-15 1973-03-15 Digital coder divides angles sine - by sum or difference of angular sine and cosine Granted FR2221876A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7309272A FR2221876A1 (en) 1973-03-15 1973-03-15 Digital coder divides angles sine - by sum or difference of angular sine and cosine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7309272A FR2221876A1 (en) 1973-03-15 1973-03-15 Digital coder divides angles sine - by sum or difference of angular sine and cosine

Publications (2)

Publication Number Publication Date
FR2221876A1 true FR2221876A1 (en) 1974-10-11
FR2221876B1 FR2221876B1 (en) 1976-06-11

Family

ID=9116341

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309272A Granted FR2221876A1 (en) 1973-03-15 1973-03-15 Digital coder divides angles sine - by sum or difference of angular sine and cosine

Country Status (1)

Country Link
FR (1) FR2221876A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381283A1 (en) * 1977-02-16 1978-09-15 Aga Ab LINEAR OR ANGULAR LENGTH MEASUREMENT DEVICE
FR2427013A1 (en) * 1978-05-24 1979-12-21 Efcis PROCESS FOR SELF-CORRECTION OF ERROROUS RESULTS DELIVERED BY A DATA ACQUISITION CHAIN AND SELF-CORRECTING SYSTEM FOR IMPLEMENTING THIS PROCEDURE
EP0877488A1 (en) * 1997-05-09 1998-11-11 Mannesmann VDO AG Method for detecting the angle of rotation of a rotatable shaft, in particular of a rotatable switch, and device for carrying out the method
EP0913668A1 (en) * 1997-10-29 1999-05-06 ruf electronics gmbh Process for measuring the phase angle of position sensors with sinusoidal output signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516084A (en) * 1967-07-17 1970-06-02 Sperry Rand Corp Analog-to-digital converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516084A (en) * 1967-07-17 1970-06-02 Sperry Rand Corp Analog-to-digital converter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381283A1 (en) * 1977-02-16 1978-09-15 Aga Ab LINEAR OR ANGULAR LENGTH MEASUREMENT DEVICE
FR2427013A1 (en) * 1978-05-24 1979-12-21 Efcis PROCESS FOR SELF-CORRECTION OF ERROROUS RESULTS DELIVERED BY A DATA ACQUISITION CHAIN AND SELF-CORRECTING SYSTEM FOR IMPLEMENTING THIS PROCEDURE
EP0877488A1 (en) * 1997-05-09 1998-11-11 Mannesmann VDO AG Method for detecting the angle of rotation of a rotatable shaft, in particular of a rotatable switch, and device for carrying out the method
EP0913668A1 (en) * 1997-10-29 1999-05-06 ruf electronics gmbh Process for measuring the phase angle of position sensors with sinusoidal output signals

Also Published As

Publication number Publication date
FR2221876B1 (en) 1976-06-11

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Legal Events

Date Code Title Description
ST Notification of lapse