GB1407455A - Drift corrector for transducers - Google Patents

Drift corrector for transducers

Info

Publication number
GB1407455A
GB1407455A GB3872372A GB3872372A GB1407455A GB 1407455 A GB1407455 A GB 1407455A GB 3872372 A GB3872372 A GB 3872372A GB 3872372 A GB3872372 A GB 3872372A GB 1407455 A GB1407455 A GB 1407455A
Authority
GB
United Kingdom
Prior art keywords
amplifier
drift
signal
workpiece
integrator
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
GB3872372A
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Publication of GB1407455A publication Critical patent/GB1407455A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/225—Measuring circuits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2268—Arrangements for correcting or for compensating unwanted effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0066—Calibration arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0076—Force sensors associated with manufacturing machines

Abstract

1407455 Measuring strain electrically USS ENGS & CONSULTANTS Inc 18 Aug 1972 [20 Aug 1971] 38723/72 Heading G1N In apparatus for measuring the roll separation force produced by a workpiece W in a rolling mill the signal from strain gauge bridge 8 installed on the roll housing is compensated for temperature drift by means of an amplifier 18 receiving the signal and supplying it to an integrator 30 through an inverting amplifier 26, a comparator 32 and switches 46, 48 being arranged such that when the signal to amplifier 18 is due to drift alone, that is no workpiece is present, the output signal from the amplifier 18 is inverted at 26 then integrated and fed to an input of amplifier 18 to balance the drift signal, but when a workpiece enters the rolls the integrator is caused to be switched to hold its output constant and equal and opposite to the drift component so that it is substracted at 18, and the meter 22 and recorder 24 indicate the driftfree force value. A variable resistor 28 is said to be arranged to control the speed of drift compensation.
GB3872372A 1971-08-20 1972-08-18 Drift corrector for transducers Expired GB1407455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17343671A 1971-08-20 1971-08-20

Publications (1)

Publication Number Publication Date
GB1407455A true GB1407455A (en) 1975-09-24

Family

ID=22632011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3872372A Expired GB1407455A (en) 1971-08-20 1972-08-18 Drift corrector for transducers

Country Status (13)

Country Link
US (1) US3714806A (en)
JP (1) JPS4830475A (en)
BE (1) BE787685A (en)
BR (1) BR7205608D0 (en)
CA (1) CA951136A (en)
DE (1) DE2240766A1 (en)
ES (1) ES405980A1 (en)
FR (1) FR2151321A5 (en)
GB (1) GB1407455A (en)
IT (1) IT969542B (en)
NL (1) NL7211354A (en)
NO (1) NO137664C (en)
SE (1) SE386088B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781869A (en) * 1972-03-20 1973-12-25 Inservco Inc Transducer amplifier with automatic balance
GB1414144A (en) * 1972-03-20 1975-11-19 Welwyn Electric Ltd Strain measuring device
US3791204A (en) * 1972-08-28 1974-02-12 Bethlehem Steel Corp Rolling mill force measuring apparatus
SE377382B (en) * 1973-10-23 1975-06-30 Bofors Ab
DE2410407C3 (en) * 1974-03-05 1981-05-21 Fa. Ludwig Krohne, 4100 Duisburg Method for the compensation of the electrochemical disturbance DC voltage in the inductive flow measurement with a DC field periodically switched back and forth between two induction values
US3924458A (en) * 1974-04-01 1975-12-09 Us Navy Pressure sensitive control device
US4033183A (en) * 1976-10-08 1977-07-05 Bethlehem Steel Corporation Horizontal- and vertical-roll force measuring system
US4171646A (en) * 1978-08-22 1979-10-23 Dybel Frank Richard Load differential monitoring system
JPS57173702A (en) * 1981-04-18 1982-10-26 Kyowa Dengiyou:Kk Strain measuring device
DE3128410A1 (en) * 1981-07-17 1983-02-03 Hilti AG, 9494 Schaan EVALUATION CIRCUIT FOR AN ELECTRIC TORQUE SIGNAL ON A DRILLING MACHINE
US4461182A (en) * 1982-07-23 1984-07-24 Niagara Machine & Tool Works Load measuring apparatus
US4491000A (en) * 1983-06-30 1985-01-01 General Electric Company Method and apparatus for improved sensing of roll separation force in a rolling mill
DE8523750U1 (en) * 1985-08-19 1985-10-10 Badische Stahl-Engineering GmbH, 7640 Kehl Roller guide, especially for billets, rod and wire mill stands
JP2532149B2 (en) * 1990-02-06 1996-09-11 本田技研工業株式会社 Semiconductor sensor
US5901591A (en) * 1996-04-29 1999-05-11 Tippins Incorporated Pinch roll shapemetering apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2342374A (en) * 1941-03-19 1944-02-22 Sperry Prod Inc Strain gauge for rolling mills and the like
US3541320A (en) * 1968-08-07 1970-11-17 Gen Electric Drift compensation for integrating amplifiers
US3667041A (en) * 1969-12-04 1972-05-30 Blh Electronics Automatic zero circuitry for indicating devices

Also Published As

Publication number Publication date
IT969542B (en) 1974-04-10
US3714806A (en) 1973-02-06
NL7211354A (en) 1973-02-22
BE787685A (en) 1973-02-19
CA951136A (en) 1974-07-16
SE386088B (en) 1976-08-02
JPS4830475A (en) 1973-04-21
NO137664B (en) 1977-12-19
ES405980A1 (en) 1975-09-16
BR7205608D0 (en) 1973-08-23
FR2151321A5 (en) 1973-04-13
NO137664C (en) 1978-04-05
DE2240766A1 (en) 1973-02-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee