WO2001006162A3 - Method and apparatus for measuring the position of a solenoid valve stem - Google Patents

Method and apparatus for measuring the position of a solenoid valve stem Download PDF

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Publication number
WO2001006162A3
WO2001006162A3 PCT/US2000/040367 US0040367W WO0106162A3 WO 2001006162 A3 WO2001006162 A3 WO 2001006162A3 US 0040367 W US0040367 W US 0040367W WO 0106162 A3 WO0106162 A3 WO 0106162A3
Authority
WO
WIPO (PCT)
Prior art keywords
solenoid coil
valve stem
solenoid
coil
transient response
Prior art date
Application number
PCT/US2000/040367
Other languages
French (fr)
Other versions
WO2001006162A2 (en
Inventor
Michael L Rhodes
Arthur Noel John Pearman
James E Lenz
William A Harris
Original Assignee
Parker Hannifin 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 Parker Hannifin Corp filed Critical Parker Hannifin Corp
Priority to AU71344/00A priority Critical patent/AU7134400A/en
Publication of WO2001006162A2 publication Critical patent/WO2001006162A2/en
Publication of WO2001006162A3 publication Critical patent/WO2001006162A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
    • 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
    • H01F7/1844—Monitoring or fail-safe circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

A solenoid valve includes a solenoid coil and a valve stem positionable with respect to the solenoid coil. A transient response produced by the solenoid coil upon varying an energization state of the coil is measured to analyze various characteristics of the solenoid valve. In one embodiment, an excitation pulse is applied to the solenoid coil and is preferably of a duration sufficiently short so as to not actuate movement of a solenoid valve stem. A transient response of the solenoid coil is monitored following application of the excitation pulse to measure a rise time, decay time and/or transition time of the current of voltage across the solenoid coil. The rise time, decay time, and/or transition time of the current or voltage across the solenoid coil varies as a function of an inductance of the solenoid coil. The inductance of the solenoid coil, in turn, varies as a function of a position of the valve stem with respect to the solenoid coil. Accordingly, a position of the valve stem is determined based on measuring a transient response of the solenoid coil to the excitation pulse.
PCT/US2000/040367 1999-07-16 2000-07-12 Method and apparatus for measuring the position of a solenoid valve stem WO2001006162A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU71344/00A AU7134400A (en) 1999-07-16 2000-07-12 Method and apparatus for measuring the position of a solenoid valve stem

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14440699P 1999-07-16 1999-07-16
US60/144,406 1999-07-16
US44417999A 1999-11-19 1999-11-19
US09/444,179 1999-11-19

Publications (2)

Publication Number Publication Date
WO2001006162A2 WO2001006162A2 (en) 2001-01-25
WO2001006162A3 true WO2001006162A3 (en) 2001-03-22

Family

ID=26841970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/040367 WO2001006162A2 (en) 1999-07-16 2000-07-12 Method and apparatus for measuring the position of a solenoid valve stem

Country Status (2)

Country Link
AU (1) AU7134400A (en)
WO (1) WO2001006162A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351873B4 (en) * 2003-11-06 2012-07-26 Pilz Gmbh & Co. Kg Device and method for fail-safe switching off an inductive load
KR100835195B1 (en) 2004-04-19 2008-06-05 주식회사 만도 Location control apparatus of solenoid
FR2901053B1 (en) * 2006-05-15 2008-10-17 Schneider Electric Ind Sas ELECTRONIC CONTROL DEVICE FOR ELECTROMAGNETIC APPARATUS
EP2447798B1 (en) * 2010-10-26 2014-07-23 Vetco Gray Controls Limited Testing a control system including a valve
DE102017117487B4 (en) * 2017-08-02 2024-06-13 Ilmenauer Mechatronik GmbH Method and device for monitoring the armature end position of an electromagnetic actuator
GB2574229A (en) * 2018-05-31 2019-12-04 Fas Medic Sa Method and apparatus for energising a solenoid of a valve assembly
DE102019219187A1 (en) * 2019-12-09 2021-06-10 Zf Friedrichshafen Ag Sensorless monitoring
CN113466585B (en) * 2021-06-22 2023-12-15 北京化工大学 Online detection method for external characteristics of in-service pneumatic stop valve based on pulse excitation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950985A (en) * 1987-12-09 1990-08-21 Herion-Werke Kg Apparatus for measuring electromagnetic values of a coil, in particular for measuring the position of armature of a coil/armature magnetic system
US5583434A (en) * 1993-07-20 1996-12-10 Martin Marietta Energy Systems, Inc. Method and apparatus for monitoring armature position in direct-current solenoids
US5831809A (en) * 1995-09-09 1998-11-03 Fev Motorentechnik Gmbh & Co. Kg Method for controlling an electromagnetic actuator with compensation for changes in ohmic resistance of the electromagnet coil
EP0908904A2 (en) * 1997-10-06 1999-04-14 Husco International, Inc. Method and apparatus for sensing armature position in reluctance electromagnetic actuators
EP0915255A2 (en) * 1997-11-04 1999-05-12 Caterpillar Inc. Method of operating a fuel injector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789876A (en) 1973-04-06 1974-02-05 Parker Hannifin Corp Solenoid valve with electronic position indicator
US4809742A (en) 1988-04-18 1989-03-07 Pneumo Abex Corporation Control valve assembly including valve position sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950985A (en) * 1987-12-09 1990-08-21 Herion-Werke Kg Apparatus for measuring electromagnetic values of a coil, in particular for measuring the position of armature of a coil/armature magnetic system
US5583434A (en) * 1993-07-20 1996-12-10 Martin Marietta Energy Systems, Inc. Method and apparatus for monitoring armature position in direct-current solenoids
US5831809A (en) * 1995-09-09 1998-11-03 Fev Motorentechnik Gmbh & Co. Kg Method for controlling an electromagnetic actuator with compensation for changes in ohmic resistance of the electromagnet coil
EP0908904A2 (en) * 1997-10-06 1999-04-14 Husco International, Inc. Method and apparatus for sensing armature position in reluctance electromagnetic actuators
EP0915255A2 (en) * 1997-11-04 1999-05-12 Caterpillar Inc. Method of operating a fuel injector

Also Published As

Publication number Publication date
WO2001006162A2 (en) 2001-01-25
AU7134400A (en) 2001-02-05

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