FR2444924A1 - APPARATUS FOR DETERMINING THE POSITION OF A MOBILE MEMBER RELATING TO A FIXED SUPPORT - Google Patents

APPARATUS FOR DETERMINING THE POSITION OF A MOBILE MEMBER RELATING TO A FIXED SUPPORT

Info

Publication number
FR2444924A1
FR2444924A1 FR7930311A FR7930311A FR2444924A1 FR 2444924 A1 FR2444924 A1 FR 2444924A1 FR 7930311 A FR7930311 A FR 7930311A FR 7930311 A FR7930311 A FR 7930311A FR 2444924 A1 FR2444924 A1 FR 2444924A1
Authority
FR
France
Prior art keywords
determining
fixed support
movable member
mobile member
movable
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
FR7930311A
Other languages
French (fr)
Other versions
FR2444924B1 (en
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.)
SANDRETTO SpA
Original Assignee
SANDRETTO SpA
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 SANDRETTO SpA filed Critical SANDRETTO SpA
Publication of FR2444924A1 publication Critical patent/FR2444924A1/en
Application granted granted Critical
Publication of FR2444924B1 publication Critical patent/FR2444924B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/204—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 mutual induction between two or more coils
    • G01D5/2046—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 mutual induction between two or more coils by a movable ferromagnetic element, e.g. a core

Abstract

L'invention concerne un appareil à déterminer la position d'un organe mobile relativement à un support fixe. Cet appareil comprend un transformateur 21 comportant un noyau ferromagnétique 13 mobile solidairement avec l'organe mobile 12; le primaire 22, 23 et le secondaire 19 sont montés rigidement sur le support fixe 11 coaxialement entre eux et bobinés de manière à définir un conduit tubulaire 17 recevant le noyau mobile 13, chaque position de l'organe mobile 12 déterminant un coefficient de couplage correspondant de sorte que le secondaire peut fournir une tension proportionnelle à ladite position. L'invention s'applique au contrôle du mouvement du chariot d'une machine à mouler les matières plastiques.The invention relates to an apparatus for determining the position of a movable member relative to a fixed support. This apparatus comprises a transformer 21 comprising a ferromagnetic core 13 movable integrally with the movable member 12; the primary 22, 23 and the secondary 19 are rigidly mounted on the fixed support 11 coaxially with one another and wound so as to define a tubular duct 17 receiving the movable core 13, each position of the movable member 12 determining a corresponding coupling coefficient so that the secondary can provide a voltage proportional to said position. The invention applies to the control of the movement of the carriage of a machine for molding plastics.

FR7930311A 1978-12-19 1979-12-11 APPARATUS FOR DETERMINING THE POSITION OF A MOBILE MEMBER RELATING TO A FIXED SUPPORT Granted FR2444924A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69893/78A IT1108522B (en) 1978-12-19 1978-12-19 APPARATUS TO DETECT THE POSITION OF A MOVING BODY COMPARED TO A FIXED SUPPORT BODY

Publications (2)

Publication Number Publication Date
FR2444924A1 true FR2444924A1 (en) 1980-07-18
FR2444924B1 FR2444924B1 (en) 1985-03-22

Family

ID=11313042

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7930311A Granted FR2444924A1 (en) 1978-12-19 1979-12-11 APPARATUS FOR DETERMINING THE POSITION OF A MOBILE MEMBER RELATING TO A FIXED SUPPORT

Country Status (8)

Country Link
JP (1) JPS5583801A (en)
BE (1) BE880723A (en)
DE (1) DE2948440A1 (en)
ES (1) ES487083A1 (en)
FR (1) FR2444924A1 (en)
GB (1) GB2040470A (en)
IT (1) IT1108522B (en)
NL (1) NL7908848A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547423A1 (en) * 1983-06-08 1984-12-14 Petercem Sa METHOD FOR CONTROLLING THE POSITION OF A TARGET WITHIN A THICK-WALL ENVELOPE AND CORREPONDING APPARATUS
EP0205754A2 (en) * 1985-03-04 1986-12-30 Elektroteile GmbH Ferromagnetic core for an inductive position sensor
FR2611895A1 (en) * 1987-03-03 1988-09-09 Lucas Ind Plc VARIABLE INDUCTANCE TRANSDUCER

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579960A (en) * 1980-06-19 1982-01-19 Sekisui House Kk Parting edge mounting of outer wall
JPS60232922A (en) * 1984-05-07 1985-11-19 Tekunopurasu:Kk Action position detector for molder
DE3801779C2 (en) * 1988-01-22 1997-10-23 Vdo Schindling Displacement sensor
SE541400C2 (en) 2017-02-27 2019-09-17 Sem Ab Inductive position sensor with improved plunger core design
CN107576295B (en) * 2017-09-21 2020-09-04 北京机械设备研究所 High-speed linear displacement sensing detection device for motor rotor
EP3471114A1 (en) * 2017-10-14 2019-04-17 Hamilton Sundstrand Corporation Lvdt core formed of metal sheet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB883781A (en) * 1957-01-16 1961-12-06 Atomic Energy Authority Uk Improvements in or relating to apparatus for the measurement, indication or detection of position of an object
FR2297403A1 (en) * 1975-01-11 1976-08-06 Tioxide Group Ltd HIGH LINEARITY MAGNETIC TRANSDUCER
GB1489185A (en) * 1975-01-30 1977-10-19 Dowty Boulton Ltd P Electro-magnetic transducer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB883781A (en) * 1957-01-16 1961-12-06 Atomic Energy Authority Uk Improvements in or relating to apparatus for the measurement, indication or detection of position of an object
FR2297403A1 (en) * 1975-01-11 1976-08-06 Tioxide Group Ltd HIGH LINEARITY MAGNETIC TRANSDUCER
GB1489185A (en) * 1975-01-30 1977-10-19 Dowty Boulton Ltd P Electro-magnetic transducer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547423A1 (en) * 1983-06-08 1984-12-14 Petercem Sa METHOD FOR CONTROLLING THE POSITION OF A TARGET WITHIN A THICK-WALL ENVELOPE AND CORREPONDING APPARATUS
EP0128824A1 (en) * 1983-06-08 1984-12-19 Petercem S.A. Process and device for monitoring the position of a slide in the interior of a thick-walled casing
EP0205754A2 (en) * 1985-03-04 1986-12-30 Elektroteile GmbH Ferromagnetic core for an inductive position sensor
EP0205754A3 (en) * 1985-03-04 1988-09-07 Elektroteile GmbH Ferromagnetic core for an inductive position sensor
FR2611895A1 (en) * 1987-03-03 1988-09-09 Lucas Ind Plc VARIABLE INDUCTANCE TRANSDUCER

Also Published As

Publication number Publication date
IT7869893A0 (en) 1978-12-19
NL7908848A (en) 1980-06-23
JPS5583801A (en) 1980-06-24
GB2040470A (en) 1980-08-28
FR2444924B1 (en) 1985-03-22
BE880723A (en) 1980-04-16
DE2948440A1 (en) 1980-07-10
IT1108522B (en) 1985-12-09
ES487083A1 (en) 1980-07-01

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Legal Events

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CD Change of name or company name
ST Notification of lapse