FR2447552A1 - Tachometric alternator for servo control system - utilises hall magnetic sensor to permit detection of speed sign - Google Patents

Tachometric alternator for servo control system - utilises hall magnetic sensor to permit detection of speed sign

Info

Publication number
FR2447552A1
FR2447552A1 FR7901641A FR7901641A FR2447552A1 FR 2447552 A1 FR2447552 A1 FR 2447552A1 FR 7901641 A FR7901641 A FR 7901641A FR 7901641 A FR7901641 A FR 7901641A FR 2447552 A1 FR2447552 A1 FR 2447552A1
Authority
FR
France
Prior art keywords
alternator
tachometric
control system
servo control
magnetic sensor
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
FR7901641A
Other languages
French (fr)
Other versions
FR2447552B1 (en
Inventor
Bernard Grancoin
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
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7901641A priority Critical patent/FR2447552A1/en
Publication of FR2447552A1 publication Critical patent/FR2447552A1/en
Application granted granted Critical
Publication of FR2447552B1 publication Critical patent/FR2447552B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The speed sensor is for a servo control system and comprises a tachometric generator in the form of an alternator. Magnetic field sensors allow an electronic circuit to determine the sign of the speed and the rotational speed. This overcomes contact problems in DC tachogenerators. A two phase alternator (1) includes a Hall effect magnetic sensor (G1) which is located on a radius which is parallel to a winding (B1) and is in the machine gap. The sensor is excited by a current (ig) to produce a voltage output for a sign comparator circuit (20) as the alternator rotates. This circuit controls a sign inverter (21) connected to the output of a circuit (13, 14, 15, 16) which produces a bidirectional tachometric signal from the two windings (B1, B2).
FR7901641A 1979-01-23 1979-01-23 Tachometric alternator for servo control system - utilises hall magnetic sensor to permit detection of speed sign Granted FR2447552A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7901641A FR2447552A1 (en) 1979-01-23 1979-01-23 Tachometric alternator for servo control system - utilises hall magnetic sensor to permit detection of speed sign

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7901641A FR2447552A1 (en) 1979-01-23 1979-01-23 Tachometric alternator for servo control system - utilises hall magnetic sensor to permit detection of speed sign

Publications (2)

Publication Number Publication Date
FR2447552A1 true FR2447552A1 (en) 1980-08-22
FR2447552B1 FR2447552B1 (en) 1982-11-19

Family

ID=9221082

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901641A Granted FR2447552A1 (en) 1979-01-23 1979-01-23 Tachometric alternator for servo control system - utilises hall magnetic sensor to permit detection of speed sign

Country Status (1)

Country Link
FR (1) FR2447552A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269779A1 (en) * 1986-11-10 1988-06-08 VDO Adolf Schindling AG Method and apparatus for the determination of angular speed, using two rotation angle-dependent signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051544B (en) * 1958-03-05 1959-02-26 Deuta Werke Gmbh Speed and direction indicators, especially for shipbuilding and rail vehicles
US2979623A (en) * 1958-06-26 1961-04-11 Nat Res Dev Velocity indicator
US3614616A (en) * 1969-11-10 1971-10-19 Fincor Inc Bidirectional ac tachometer
US3662252A (en) * 1970-06-22 1972-05-09 Otto Joseph Mitchell Smith Tachometer and method for obtaining a signal indicative of alternator shaft speed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051544B (en) * 1958-03-05 1959-02-26 Deuta Werke Gmbh Speed and direction indicators, especially for shipbuilding and rail vehicles
US2979623A (en) * 1958-06-26 1961-04-11 Nat Res Dev Velocity indicator
US3614616A (en) * 1969-11-10 1971-10-19 Fincor Inc Bidirectional ac tachometer
US3662252A (en) * 1970-06-22 1972-05-09 Otto Joseph Mitchell Smith Tachometer and method for obtaining a signal indicative of alternator shaft speed

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/67 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269779A1 (en) * 1986-11-10 1988-06-08 VDO Adolf Schindling AG Method and apparatus for the determination of angular speed, using two rotation angle-dependent signals

Also Published As

Publication number Publication date
FR2447552B1 (en) 1982-11-19

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