CA1002137A - External magnetic field compensator - Google Patents

External magnetic field compensator

Info

Publication number
CA1002137A
CA1002137A CA186,853A CA186853A CA1002137A CA 1002137 A CA1002137 A CA 1002137A CA 186853 A CA186853 A CA 186853A CA 1002137 A CA1002137 A CA 1002137A
Authority
CA
Canada
Prior art keywords
magnetic field
external magnetic
field compensator
compensator
external
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
CA186,853A
Other languages
English (en)
Other versions
CA186853S (en
Inventor
Srinivasan V. Chari
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.)
Control Data Corp
Original Assignee
Control Data Corp
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 Control Data Corp filed Critical Control Data Corp
Application granted granted Critical
Publication of CA1002137A publication Critical patent/CA1002137A/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
    • G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Measuring Magnetic Variables (AREA)
  • Circuit For Audible Band Transducer (AREA)
CA186,853A 1972-12-04 1973-11-28 External magnetic field compensator Expired CA1002137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00311585A US3816776A (en) 1972-12-04 1972-12-04 External magnetic field compensator

Publications (1)

Publication Number Publication Date
CA1002137A true CA1002137A (en) 1976-12-21

Family

ID=23207553

Family Applications (1)

Application Number Title Priority Date Filing Date
CA186,853A Expired CA1002137A (en) 1972-12-04 1973-11-28 External magnetic field compensator

Country Status (7)

Country Link
US (1) US3816776A (Direct)
JP (1) JPS4988025A (Direct)
CA (1) CA1002137A (Direct)
DE (1) DE2359873A1 (Direct)
FR (1) FR2209187B3 (Direct)
GB (1) GB1418820A (Direct)
NL (1) NL7316538A (Direct)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382792A1 (fr) * 1977-03-04 1978-09-29 Guimbal Jean Moteur lineaire prismatique a grande vitesse et a tres grande puissance massique
DE2934085A1 (de) * 1979-08-23 1981-03-26 Papst Licensing Gmbh, 78549 Spaichingen Tachogenerator
US4692999A (en) * 1979-12-26 1987-09-15 Unisys Corp. Method of making a multi-coil/multi-magnet actuator
US4612592A (en) * 1979-12-26 1986-09-16 Burroughs Corporation Dual coil/dual magnet actuator
JPS59230117A (ja) * 1983-06-10 1984-12-24 Shimadzu Corp 電磁力発生装置
US4536728A (en) * 1983-10-03 1985-08-20 International Telephone & Telegraph Corp. Valve solenoid windings
US4895031A (en) * 1985-08-29 1990-01-23 Micro Motion Inc. Sensor mounting for coriolis mass flow rate meter
US4827086A (en) * 1987-11-03 1989-05-02 Calcomp Inc. Digitizer cursor coil for reducing edge effect
DE4122601A1 (de) * 1991-07-08 1993-01-14 Magnet Motor Gmbh Linearbeschleuniger
CH682860A5 (en) * 1991-12-13 1993-11-30 Zellweger Uster Ag Transducers Static electricity meters.
US5315190A (en) * 1992-12-22 1994-05-24 Stirling Technology Company Linear electrodynamic machine and method of using same
US5349256A (en) * 1993-04-23 1994-09-20 Holliday Jeffrey C Linear transducer
DE19716608A1 (de) * 1997-04-21 1998-10-22 Kloeckner Moeller Gmbh Sensorvorrichtung zur induktiven Geschwindigkeitsmessung longitudinal beweglicher Teile und elektromagnetisches Schaltgerät mit einer Sensorvorrichtung zur induktiven Geschwindigkeitsmessung
EP1024588A1 (de) * 1999-01-26 2000-08-02 ESEC Management SA Elektromagnetische Antriebsvorrichtung
KR100707418B1 (ko) * 2003-06-05 2007-04-13 엘지전자 주식회사 리니어 압축기의 제어 방법
US7279814B2 (en) * 2005-11-01 2007-10-09 Bio-Rad Laboratories, Inc. Moving coil actuator for reciprocating motion with controlled force distribution
KR100737007B1 (ko) * 2006-04-17 2007-07-09 현대자동차주식회사 무빙코일타입 선형 액츄에이터 시스템
GB2479926B (en) * 2010-04-30 2016-05-11 Atherton Nigel Electricity generator
DE202011000401U1 (de) * 2011-02-22 2012-05-23 Rollax Gmbh & Co. Kg Induktive Wegmesseinrichtung
DE202011000405U1 (de) * 2011-02-22 2012-05-23 Rollax Gmbh & Co. Kg Induktive Wegmesseinrichtung
US9030197B1 (en) 2012-03-23 2015-05-12 Ohio Semitronics Inc. Active compensation for ambient, external magnetic fields penetrating closed loop magnetic cores particularly for a fluxgate current sensor
AU2020288339A1 (en) * 2019-06-07 2022-01-06 Syndermix Ag Vibration generator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296754A (en) * 1939-04-29 1942-09-22 Texas Co Astatic electromagnetic vibration detector
US2905915A (en) * 1954-01-22 1959-09-22 Harris Transducer Corp Compensated transformer
US2832903A (en) * 1954-03-12 1958-04-29 Goodmans Ind Ltd Vibration generators
US2890438A (en) * 1954-12-08 1959-06-09 Gulf Research Development Co Seismometer
US3074269A (en) * 1959-01-30 1963-01-22 Robert J Wohl Wide range electrodynamic actuator
US3486094A (en) * 1966-11-02 1969-12-23 Atomic Energy Commission Circuitry for obtaining precisely controllable motion in a moving coil actuator
US3470399A (en) * 1968-06-17 1969-09-30 Ibm Linear motor velocity detection apparatus

Also Published As

Publication number Publication date
US3816776A (en) 1974-06-11
FR2209187A1 (Direct) 1974-06-28
DE2359873A1 (de) 1974-06-06
FR2209187B3 (Direct) 1976-10-15
NL7316538A (Direct) 1974-06-06
JPS4988025A (Direct) 1974-08-22
AU6287173A (en) 1975-05-29
GB1418820A (en) 1975-12-24

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