GB2435772A - Method and computer program for determining position of a movable core in a coil - Google Patents

Method and computer program for determining position of a movable core in a coil

Info

Publication number
GB2435772A
GB2435772A GB0711099A GB0711099A GB2435772A GB 2435772 A GB2435772 A GB 2435772A GB 0711099 A GB0711099 A GB 0711099A GB 0711099 A GB0711099 A GB 0711099A GB 2435772 A GB2435772 A GB 2435772A
Authority
GB
United Kingdom
Prior art keywords
coil
core
computer program
value
determining
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
GB0711099A
Other versions
GB2435772B (en
GB0711099D0 (en
Inventor
Sten Jiewertz
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Publication of GB0711099D0 publication Critical patent/GB0711099D0/en
Publication of GB2435772A publication Critical patent/GB2435772A/en
Application granted granted Critical
Publication of GB2435772B publication Critical patent/GB2435772B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/04—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2013—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A method in a vehicle, a computer program, a computer program product and a vehicle (A) for determining position of a movable operating mechanism (1) connected to a core (2) in a coil (3), comprising the steps of: generating intervals of shorter pulses and intervals of wider pulses to repeatedly close a switch (4), measuring time for the voltage to reach a predetermined limit value every time the switch is closed, determining, in response to the measured time, a coarse value of the position of the movable core, measuring at the intervals of wider pulses the voltage at maximum steady-state value of the current through the coil, determining, in response to the measured voltage at maximum steady-state value, a coil temperature compensation coefficient, and compensating the coarse value of the position of the core with the coefficient to obtain a fine value of the position of the core.
GB0711099A 2005-01-03 2005-12-22 Method and computer program for determining position of a movable core in a coil Expired - Fee Related GB2435772B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0500005A SE0500005D0 (en) 2005-01-03 2005-01-03 Method and computer program for determining position of a movable core in a coil
PCT/SE2005/002032 WO2006073349A1 (en) 2005-01-03 2005-12-22 Method and computer program for determining position of a movable core in a coil

Publications (3)

Publication Number Publication Date
GB0711099D0 GB0711099D0 (en) 2007-07-18
GB2435772A true GB2435772A (en) 2007-09-05
GB2435772B GB2435772B (en) 2008-12-24

Family

ID=34132483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0711099A Expired - Fee Related GB2435772B (en) 2005-01-03 2005-12-22 Method and computer program for determining position of a movable core in a coil

Country Status (4)

Country Link
DE (1) DE112005003242B8 (en)
GB (1) GB2435772B (en)
SE (1) SE0500005D0 (en)
WO (1) WO2006073349A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091823A1 (en) * 2012-12-11 2014-06-19 三菱電機株式会社 Device and method for detecting position of needle of electromagnetic actuator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118975A1 (en) * 1991-06-08 1992-12-10 Vdo Schindling Detecting position of core of electromagnetic control element - determining time required for current produced by pulses superimposed on control voltage to achieve defined change
US5332966A (en) * 1991-12-13 1994-07-26 Vdo Adolf Schindling Ag Method of compensating for the temperature of inductive sensors
DE4334844C1 (en) * 1993-10-13 1994-10-27 Grau Gmbh Circuit for determining the travel (displacement) of a core, which can be displaced in a coil, by measuring the inductance
US6541961B1 (en) * 1999-05-24 2003-04-01 Volvo Lastvagnar Ab Method and apparatus for reduced temperature dependent position detection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126846B1 (en) * 1983-04-21 1990-08-01 WABCO Westinghouse Fahrzeugbremsen GmbH Inductive sensor
DE3620137A1 (en) * 1986-06-14 1987-12-17 Raimund Wilhelm SCREW MACHINE AND METHOD FOR THEIR OPERATION
DE3807015A1 (en) * 1987-04-29 1988-11-10 Wabco Westinghouse Fahrzeug METHOD AND CIRCUIT FOR MEASURING AN INDUCTIVITY
DE4208399A1 (en) * 1992-03-16 1993-09-23 Knorr Bremse Ag METHOD AND MEASURING DEVICE FOR MEASURING THE TIME CONSTANT OF AN ELECTRICAL SENSOR
JP3587714B2 (en) * 1999-03-03 2004-11-10 本田技研工業株式会社 Displacement detector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118975A1 (en) * 1991-06-08 1992-12-10 Vdo Schindling Detecting position of core of electromagnetic control element - determining time required for current produced by pulses superimposed on control voltage to achieve defined change
US5332966A (en) * 1991-12-13 1994-07-26 Vdo Adolf Schindling Ag Method of compensating for the temperature of inductive sensors
DE4334844C1 (en) * 1993-10-13 1994-10-27 Grau Gmbh Circuit for determining the travel (displacement) of a core, which can be displaced in a coil, by measuring the inductance
US6541961B1 (en) * 1999-05-24 2003-04-01 Volvo Lastvagnar Ab Method and apparatus for reduced temperature dependent position detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091823A1 (en) * 2012-12-11 2014-06-19 三菱電機株式会社 Device and method for detecting position of needle of electromagnetic actuator
JP5813232B2 (en) * 2012-12-11 2015-11-17 三菱電機株式会社 Mover position detector for electromagnetic actuator

Also Published As

Publication number Publication date
DE112005003242B4 (en) 2016-01-07
DE112005003242T5 (en) 2007-11-08
DE112005003242B8 (en) 2016-03-17
SE0500005D0 (en) 2005-01-03
GB2435772B (en) 2008-12-24
WO2006073349A1 (en) 2006-07-13
GB0711099D0 (en) 2007-07-18

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Legal Events

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

Effective date: 20161222