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FR2231007A1 - Electromagnetic for speed or angular position transducer - generates effective flux variations from small magnetic field variations - Google Patents

Electromagnetic for speed or angular position transducer - generates effective flux variations from small magnetic field variations

Info

Publication number
FR2231007A1
FR2231007A1 FR7417973A FR7417973A FR2231007A1 FR 2231007 A1 FR2231007 A1 FR 2231007A1 FR 7417973 A FR7417973 A FR 7417973A FR 7417973 A FR7417973 A FR 7417973A FR 2231007 A1 FR2231007 A1 FR 2231007A1
Authority
FR
France
Prior art keywords
variations
speed
angular position
electromagnetic
plate
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
FR7417973A
Other languages
French (fr)
Other versions
FR2231007B1 (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.)
Fiat SpA
Original Assignee
Fiat SpA
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 Fiat SpA filed Critical Fiat SpA
Publication of FR2231007A1 publication Critical patent/FR2231007A1/en
Application granted granted Critical
Publication of FR2231007B1 publication Critical patent/FR2231007B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0289—Transducers, loudspeakers, moving coil arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

Measurement of speed of rotation or angular position is affected by using teeth which pass in the vicinity of a permanent magnet to induce a voltage in a coil. The body of a transducer (100) is stamped out in one piece from a ferromagnetic material, the base plate (102) having two mounting holes (104, 106). The body contains two cavities (109, 111) separated by a plate (110) with an opening (112). The upper cavity (109) contains the electromagnetic elements comprising a cylindrical permanent magnet (118) of high residual induction and high magnetic flux and also a coil (122). The ferromagnetic core has a base (130) with a tooth which locates in the plate opening (112). The base rests on the plate (110). The elements are impregnated with acrylic resin (142).
FR7417973A 1973-05-24 1974-05-22 Electromagnetic for speed or angular position transducer - generates effective flux variations from small magnetic field variations Granted FR2231007A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6851973A IT986354B (en) 1973-05-24 1973-05-24 ELECTROMAGNETIC SPEED OR ANGULAR POSITION TRANSDUCER

Publications (2)

Publication Number Publication Date
FR2231007A1 true FR2231007A1 (en) 1974-12-20
FR2231007B1 FR2231007B1 (en) 1976-06-25

Family

ID=11309684

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7417973A Granted FR2231007A1 (en) 1973-05-24 1974-05-22 Electromagnetic for speed or angular position transducer - generates effective flux variations from small magnetic field variations

Country Status (2)

Country Link
FR (1) FR2231007A1 (en)
IT (1) IT986354B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003838A1 (en) * 1978-03-01 1979-09-05 BERU-WERK Albert Ruprecht GmbH & Co KG Inductive pulse generator
FR2578018A1 (en) * 1985-02-26 1986-08-29 Electricfil IMPROVEMENTS ON ELECTROMAGNETIC SENSORS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230407A (en) * 1962-08-01 1966-01-18 Anelex Corp Electromagnetic transducers
US3492518A (en) * 1966-02-11 1970-01-27 Avtron Mfg Inc Magnetic-electric pickup for toothed wheels and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230407A (en) * 1962-08-01 1966-01-18 Anelex Corp Electromagnetic transducers
US3492518A (en) * 1966-02-11 1970-01-27 Avtron Mfg Inc Magnetic-electric pickup for toothed wheels and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003838A1 (en) * 1978-03-01 1979-09-05 BERU-WERK Albert Ruprecht GmbH & Co KG Inductive pulse generator
FR2578018A1 (en) * 1985-02-26 1986-08-29 Electricfil IMPROVEMENTS ON ELECTROMAGNETIC SENSORS
EP0194213A1 (en) * 1985-02-26 1986-09-10 Société à Responsabilité Limitée L'ELECTRICFIL INDUSTRIE Electromagnetic sensors

Also Published As

Publication number Publication date
FR2231007B1 (en) 1976-06-25
IT986354B (en) 1975-01-30

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Legal Events

Date Code Title Description
ST Notification of lapse