FR2238923A1 - Measurement of shaft transmitted torque - is by use of two magnetic tracks and four pickups - Google Patents
Measurement of shaft transmitted torque - is by use of two magnetic tracks and four pickupsInfo
- Publication number
- FR2238923A1 FR2238923A1 FR7327612A FR7327612A FR2238923A1 FR 2238923 A1 FR2238923 A1 FR 2238923A1 FR 7327612 A FR7327612 A FR 7327612A FR 7327612 A FR7327612 A FR 7327612A FR 2238923 A1 FR2238923 A1 FR 2238923A1
- Authority
- FR
- France
- Prior art keywords
- tracks
- shaft
- pickups
- measurement
- rotation
- 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.)
- Withdrawn
Links
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)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The torque transmitted by a rotating shaft is measured by placing two tracks 22, 21, with identical markings onto the shaft, well apart and perpendicular to the axis of rotation. Two or more reading heads, preferably four, are placed in the same line parallel to the axis of the shaft and one opposite each track. In rotation the outputs will differ in time according to the relative twist between the two tracks-and hence on the torque. Preferably the tracks and heads are magnetic and the signals applied to two dual input ORs whose outputs drive the set and reset inputs of a flip flop. Its output is integrated and applied to an opamp with a preset offset voltage to allow for alignment errors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7327612A FR2238923A1 (en) | 1973-07-27 | 1973-07-27 | Measurement of shaft transmitted torque - is by use of two magnetic tracks and four pickups |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7327612A FR2238923A1 (en) | 1973-07-27 | 1973-07-27 | Measurement of shaft transmitted torque - is by use of two magnetic tracks and four pickups |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2238923A1 true FR2238923A1 (en) | 1975-02-21 |
Family
ID=9123255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7327612A Withdrawn FR2238923A1 (en) | 1973-07-27 | 1973-07-27 | Measurement of shaft transmitted torque - is by use of two magnetic tracks and four pickups |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2238923A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4208904A (en) * | 1978-07-17 | 1980-06-24 | Resco, Inc. | Method of measuring long shaft torque |
| DE3821083A1 (en) * | 1987-06-22 | 1989-01-12 | Hitachi Ltd | TORQUE DETECTING DEVICE |
| US4805465A (en) * | 1986-06-09 | 1989-02-21 | Battelle-Institut E.V. | Arrangement for the production of straight-line symmetrical signals |
-
1973
- 1973-07-27 FR FR7327612A patent/FR2238923A1/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4208904A (en) * | 1978-07-17 | 1980-06-24 | Resco, Inc. | Method of measuring long shaft torque |
| US4805465A (en) * | 1986-06-09 | 1989-02-21 | Battelle-Institut E.V. | Arrangement for the production of straight-line symmetrical signals |
| DE3821083A1 (en) * | 1987-06-22 | 1989-01-12 | Hitachi Ltd | TORQUE DETECTING DEVICE |
| DE3844577C2 (en) * | 1987-06-22 | 1990-12-06 | Hitachi, Ltd., Tokio/Tokyo, Jp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |