GB1477304A - Rotary transducer - Google Patents

Rotary transducer

Info

Publication number
GB1477304A
GB1477304A GB2558773A GB2558773A GB1477304A GB 1477304 A GB1477304 A GB 1477304A GB 2558773 A GB2558773 A GB 2558773A GB 2558773 A GB2558773 A GB 2558773A GB 1477304 A GB1477304 A GB 1477304A
Authority
GB
United Kingdom
Prior art keywords
shaft
poles
coil
induced
speed
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.)
Expired
Application number
GB2558773A
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.)
Schneider Electric USA Inc
Original Assignee
Square D Co
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 Square D Co filed Critical Square D Co
Priority to GB2558773A priority Critical patent/GB1477304A/en
Priority to CA199,080A priority patent/CA1046607A/en
Priority to FR7418354A priority patent/FR2231970B1/fr
Priority to DE19742425872 priority patent/DE2425872C3/en
Priority to IT6866774A priority patent/IT1011891B/en
Priority to US05/747,468 priority patent/US4095177A/en
Publication of GB1477304A publication Critical patent/GB1477304A/en
Expired 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
    • G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/42—Asynchronous induction generators

Abstract

1477304 Measuring speed and rotation sense SQUARE D CO 15 May 1974 [29 May 1973] 25587/73 Heading G1N A transducer assembly for determining speed and direction of movement of a rotating shaft 14 forming part of the assembly includes a magnetic core 1 with poles 2, 3, 4. A.C. energized coils 11, 12 are wound series-aiding an opposed poles 2, 3 having faces 5, 6 to provide an alternating magnetic flux through and around the shaft. The shaft is electrically conductive and has a length greater than the maximum distance between the pole faces. When shaft 14 is stationary there is no voltage induced in sensing coil 13 wound on pole 4. However when the shaft rotates the applied and induced flux fields undergo relative displacement so that the resultant leakage flux between poles 2 and 4 is not balanced by that between poles 3 and 4. Therefore a voltage is induced in coil 13 of which the amplitude is dependent on rotation speed and the phase sense depends on direction of rotation. A transducer of enhanced sensitivity utilizing this phase sense dependence is provided by a ring core 1' with an additional pole 18 and sensing coil 19 displaced by 180‹ from the core 4 and coil 13 the two coils being connected series-aiding. In an alternative embodiment Fig. 8 (not shown) the linear speed of the shaft is determined.
GB2558773A 1973-05-29 1973-05-29 Rotary transducer Expired GB1477304A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB2558773A GB1477304A (en) 1973-05-29 1973-05-29 Rotary transducer
CA199,080A CA1046607A (en) 1973-05-29 1974-05-06 Rotary transducer for sensing rotation of different diameter shafts having uniform arcuate surfaces
FR7418354A FR2231970B1 (en) 1973-05-29 1974-05-28
DE19742425872 DE2425872C3 (en) 1973-05-29 1974-05-28 AC-excited transducer
IT6866774A IT1011891B (en) 1973-05-29 1974-05-28 TRANSDUCER TO SURVEILL THE VE LOCITY AND DIRECTION OF MOVEMENT OF AN OBJECT
US05/747,468 US4095177A (en) 1973-05-29 1976-12-03 Transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2558773A GB1477304A (en) 1973-05-29 1973-05-29 Rotary transducer

Publications (1)

Publication Number Publication Date
GB1477304A true GB1477304A (en) 1977-06-22

Family

ID=10230097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2558773A Expired GB1477304A (en) 1973-05-29 1973-05-29 Rotary transducer

Country Status (5)

Country Link
CA (1) CA1046607A (en)
DE (1) DE2425872C3 (en)
FR (1) FR2231970B1 (en)
GB (1) GB1477304A (en)
IT (1) IT1011891B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326476A1 (en) * 1983-07-22 1985-02-14 Telefunken electronic GmbH, 7100 Heilbronn Arrangement for determining the position, the geometrical dimensions or the kinetic quantities of an object
DE10040385B4 (en) * 2000-08-18 2004-04-22 Metronix Meßgeräte und Elektronik GmbH Rotational movement detecting device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178641A (en) * 1961-02-06 1965-04-13 Gen Motors Corp Drag cup tachometer accelerometer

Also Published As

Publication number Publication date
FR2231970B1 (en) 1978-06-02
CA1046607A (en) 1979-01-16
FR2231970A1 (en) 1974-12-27
DE2425872B2 (en) 1979-03-22
DE2425872A1 (en) 1974-12-19
DE2425872C3 (en) 1979-11-22
IT1011891B (en) 1977-02-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee