GB968503A - Torquemeter - Google Patents
TorquemeterInfo
- Publication number
- GB968503A GB968503A GB43866/59A GB4386659A GB968503A GB 968503 A GB968503 A GB 968503A GB 43866/59 A GB43866/59 A GB 43866/59A GB 4386659 A GB4386659 A GB 4386659A GB 968503 A GB968503 A GB 968503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- pick
- meter
- elements
- picked
- 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
Links
- 239000000463 material Substances 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/109—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving measuring phase difference of two signals or pulse trains
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/104—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving permanent magnets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
968,503. Measuring electrically. DE HAVILLAND ENGINE CO. Ltd. Dec. 22, 1960 [Dec. 24, 1959], No. 43866/59. Heading G1N. A torquemeter comprises a shaft carrying two axially spaced elements each with a magnetisable cylindrical surface concentric with the shaft, a fixed pick-up device adjacent each element, a signal channel from each pick-up device which derives from picked-up signals square waves of substantially constant amplitude but having frequency and phase the same as those of the picked-up signals, and a device for comparing the square waves from the two channels. In Fig. 1, two aluminium support drums 12, 13 are mounted coaxially and in spaced apart relation on a shaft 11; alternatively they may be integral with the shaft. Thecurved peripheral surface of each drum carries an annular magnetizable element 14 in the form of a strip, layer, or wire of ferro-magnetic metal, an impregnated plastic strip, a sintered magnetic oxide material, etc.; if in layer form, the element may be applied by spraying. Adjacent each element is located one of two combined magnetizing, erasing and pick-up devices 15, 16 which, when a 7-contact 2-position switch 17 is in the position other than that shown, are connected in series (or, alternatively, in parallel) across a generator 32 coupled to the shaft 11 which is rotated under noload conditions so that each element 14 is similarly magnetised. Preferably the intensity of magnetization around the elements varies sinusoidally, but other wave-forms may be used. Switch 17 is then restored to the position shown. When shaft 11 rotates on load, the torsional twist therein causes a relative phase displacement between the outputs of pick-ups 15, 16, each output being supplied via a gain-stable amplifier 22, an amplitude limiter 23 and a gain-stable ring-ofthree amplifying unit 24 to an A.C. meter 27 which operates according to the algebraic sum of the signals. Alternatively, an oscilloscope may replace meter 27; also the resultant signal may be fed to apparatus 39 to control the speed of rotation or the load on the shaft. The elements 14 may be in the form of discs 41 secured to the sides of drums 12, 13. To mount the drums more closely together, one drum is mounted at one end of a sleeve which extends coaxially around the shaft and is attached thereto at its other end. A multiple torquemeter sensitive to the torque in two different portions of a rotating member comprises two torquemeters as described above, one of the magnetized elements being common to both torquemeters. The Provisional Specification describes a modification in which the outputs of pickup devices 15, 16 are supplied to the primary windings of two transformers, the secondary windings of which are connected in opposition to the meter; also a revolution meter comprises a single support drum holding magnetizable material, the magnitude or frequency of the picked-up signal being measured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB43866/59A GB968503A (en) | 1959-12-24 | 1959-12-24 | Torquemeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB43866/59A GB968503A (en) | 1959-12-24 | 1959-12-24 | Torquemeter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB968503A true GB968503A (en) | 1964-09-02 |
Family
ID=10430672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43866/59A Expired GB968503A (en) | 1959-12-24 | 1959-12-24 | Torquemeter |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB968503A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640131A (en) * | 1970-05-18 | 1972-02-08 | Marine Electro Mechanical Inc | Horsepower meter |
US3935733A (en) * | 1974-11-14 | 1976-02-03 | Resco, Inc. | Electronic transmission dynamometer |
FR2438830A1 (en) * | 1978-07-17 | 1980-05-09 | Resco Inc | PROCESS FOR THE MEASUREMENT OF TORQUES IMPARTISED TO LARGE-SHAFT TREES |
US4444064A (en) * | 1982-06-14 | 1984-04-24 | General Electric Company | Electromagnetic torque measuring instrumentation for a rotating shaft |
DE4232040A1 (en) * | 1991-09-26 | 1993-04-08 | Mazda Motor | Torque measurement system, e.g. for motor vehicle power transmission shaft - has three magnetic heads opposite magnetic regions on surface of rotating part, and phase and time difference and torsion angle evaluation devices |
WO2001027584A1 (en) * | 1999-10-11 | 2001-04-19 | Fast Technology Ag | Torque measurement apparatus |
-
1959
- 1959-12-24 GB GB43866/59A patent/GB968503A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640131A (en) * | 1970-05-18 | 1972-02-08 | Marine Electro Mechanical Inc | Horsepower meter |
US3935733A (en) * | 1974-11-14 | 1976-02-03 | Resco, Inc. | Electronic transmission dynamometer |
FR2438830A1 (en) * | 1978-07-17 | 1980-05-09 | Resco Inc | PROCESS FOR THE MEASUREMENT OF TORQUES IMPARTISED TO LARGE-SHAFT TREES |
US4208904A (en) * | 1978-07-17 | 1980-06-24 | Resco, Inc. | Method of measuring long shaft torque |
US4444064A (en) * | 1982-06-14 | 1984-04-24 | General Electric Company | Electromagnetic torque measuring instrumentation for a rotating shaft |
DE4232040A1 (en) * | 1991-09-26 | 1993-04-08 | Mazda Motor | Torque measurement system, e.g. for motor vehicle power transmission shaft - has three magnetic heads opposite magnetic regions on surface of rotating part, and phase and time difference and torsion angle evaluation devices |
DE4232040C2 (en) * | 1991-09-26 | 1999-07-29 | Mazda Motor | Torque detection system |
WO2001027584A1 (en) * | 1999-10-11 | 2001-04-19 | Fast Technology Ag | Torque measurement apparatus |
US6826969B1 (en) | 1999-10-11 | 2004-12-07 | Abas, Incorporated | Torque measurement apparatus |
US6997065B2 (en) | 1999-10-11 | 2006-02-14 | Abas, Incorporated | Torque measurement apparatus |
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