ES405980A1 - Drift corrector for transducers - Google Patents

Drift corrector for transducers

Info

Publication number
ES405980A1
ES405980A1 ES405980A ES405980A ES405980A1 ES 405980 A1 ES405980 A1 ES 405980A1 ES 405980 A ES405980 A ES 405980A ES 405980 A ES405980 A ES 405980A ES 405980 A1 ES405980 A1 ES 405980A1
Authority
ES
Spain
Prior art keywords
integrator
amplifier
input
workpiece
output
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
ES405980A
Other languages
Spanish (es)
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 ES405980A1 publication Critical patent/ES405980A1/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

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Force In General (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Feedback Control In General (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Soil Working Implements (AREA)

Abstract

Apparatus for measuring the roll separating force produced by a workpiece includes a strain gage bridge, and an amplifier having a first input connected to the output of the bridge, a second input and an output. A first circuit including a polarity reversal means and an integrator connected in series is arranged between the output and second input of the amplifier. The integrator has an input connected to the output of the amplifier, an output connected to the second input of the amplifier, and a control connection. A second circuit between the control connection and the first circuit on the input side of the integrator includes switch means operable when there is no workpiece in the mill to provide a signal to the control connection to cause the integrator to be in its operative mode and operable when there is a workpiece in the mill to provide a signal to the control connection to cause the integrator to be in its hold mode. This provides a signal to the amplifier from the integrator which is equal and opposite to the voltage from the bridge when there is no workpiece in the mill which voltage remains constant when the workpiece is in the mill. Thus, a true reading of the roll separation force is obtained regardless of the amount of drift present.
ES405980A 1971-08-20 1972-08-19 Drift corrector for transducers Expired ES405980A1 (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
ES405980A1 true ES405980A1 (en) 1975-09-16

Family

ID=22632011

Family Applications (1)

Application Number Title Priority Date Filing Date
ES405980A Expired ES405980A1 (en) 1971-08-20 1972-08-19 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
GB1414144A (en) * 1972-03-20 1975-11-19 Welwyn Electric Ltd Strain measuring device
US3781869A (en) * 1972-03-20 1973-12-25 Inservco Inc Transducer amplifier with automatic balance
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
NL7211354A (en) 1973-02-22
US3714806A (en) 1973-02-06
BE787685A (en) 1973-02-19
JPS4830475A (en) 1973-04-21
NO137664C (en) 1978-04-05
DE2240766A1 (en) 1973-02-22
FR2151321A5 (en) 1973-04-13
GB1407455A (en) 1975-09-24
CA951136A (en) 1974-07-16
NO137664B (en) 1977-12-19
IT969542B (en) 1974-04-10
SE386088B (en) 1976-08-02
BR7205608D0 (en) 1973-08-23

Similar Documents

Publication Publication Date Title
ES405980A1 (en) Drift corrector for transducers
ES427601A1 (en) Electronic torque wrench
GB1282776A (en) Linearizing circuit for bridge-connected transducers
GB1412026A (en) Anti-evasion system for a breath alcohol tester
GB1515352A (en) Circuit for processing physiological measurement signals
GB1287024A (en) A strain measuring and display system including a strain gage transducer bridge circuit arrangement
GB1437565A (en) Wide dynamic range logarithmic amplifier arrangement
GB1064420A (en) Electronic measuring instrumentation system
ES314510A1 (en) Apparatus for measuring or indicating physical quantities
GB956142A (en) Getter-ion vacuum pump apparatus
GB1211430A (en) Pressure trandsducer
SU756418A1 (en) Pulse-frequency-width operational amplifier
SU447619A1 (en) Method for measuring low DC voltages
SU300108A1 (en) Hall voltage sensor
JPS5234770A (en) Detection circuit of multiple input maximum value
SU409296A1 (en) DEVICE FOR MONITORING INFORMATION DRIVERS
SU864111A1 (en) Device for receiving acoustic emission signals
SU1283518A1 (en) Device for measuring radius of cylindrical metal non-ferromagnetic bodies
SU113949A1 (en) Photoelectric device for determining the thickness of the sheet material
SU705465A1 (en) Resolving amplifier
SU394935A1 (en)
GB926066A (en) Arrangement for determining buckling of rails
SU756190A1 (en) Dynamic deformation measuring device
GB907567A (en) Improvements in or relating to apparatus for measuring low pressure
GB1056500A (en) Improvements in or relating to measuring apparatus