GB600980A - Improvements relating to the stroboscopic observation of shafts and like rotating members - Google Patents
Improvements relating to the stroboscopic observation of shafts and like rotating membersInfo
- Publication number
- GB600980A GB600980A GB2617045A GB2617045A GB600980A GB 600980 A GB600980 A GB 600980A GB 2617045 A GB2617045 A GB 2617045A GB 2617045 A GB2617045 A GB 2617045A GB 600980 A GB600980 A GB 600980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pick
- line scan
- speed
- shaft
- coil
- 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
- 230000000875 corresponding Effects 0.000 abstract 2
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 230000001052 transient Effects 0.000 abstract 2
- 230000001808 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000006011 modification reaction Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
600,980. Electric indicating systems. BRITISH THOMSON-HOUSTON CO., Ltd., and CASTELLAIN, A. P. Oct. 8, 1945, No. 26170. [Class 40 (i)] The speed or other characteristic of a rotating body is measured by inducing a voltage in a coil at each revolution of the body and applying this transient voltage to a cathode ray oscillograph arranged to indicate the speed or other characteristic. Two or more pick-up coils may be used, e.g. for indicating the torque transmitted by a shaft one of the pick ups being used to trigger the line scan of the C.R.O. As shown, the shaft 4, Fig. 4, whose speed is required, carries a disc 3 having a magnetic inset 2 which co-operates with fixed magnetic elements 1a, 1b (the inset 2 or the elements 1a, 1b being permanently magnetised) to induce transient voltages in pick-up coils 10a, 10b mounted on the elements. These voltages are fed to a C.R.O. 13, the voltage from pick-up 10a triggering the line scan and the voltage from 10b producing a blip in the line at a position corresponding to the shaft speed. Alternatively, the speed may be indicated by the adjustment of the line scan sweep speed control necessary to bring the blip to a standard position. The pick-up coil 10a may be dispensed with in which case the line scan control is derived from a separate source. In the Fig. 5 arrangement, a third pick-up coil 10c is provided co-operating with a magnetic inset 2a in a collar 15 secured to a sleeve 16 fixed to the shaft 4 at a remote point 17. As before the output from coil 10a is used to trigger off the line scan and the outputs from coils 10b, 10c used to produce blips on this line the displacement between which is a measure of the torque transmitted by the shaft. Alternatively the torque may be indicated by the adjustment of the line scan sweep speed control necessary to main the blips at a standard spacing corresponding to, e.g. zero torque. In a modification, Fig. 6 (not shown) the disc 3 has two circumferentially spaced magnetic insets for providing improved indications on the C.R.O. According to the Provisional Specification the apparatus may be used for determining the angular displacement between two shafts and hence the slip in a magnetic coupling or belt drive.
Publications (1)
Publication Number | Publication Date |
---|---|
GB600980A true GB600980A (en) | 1948-04-23 |
Family
ID=1739857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2617045A Expired GB600980A (en) | 1945-10-08 | Improvements relating to the stroboscopic observation of shafts and like rotating members |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB600980A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2947168A (en) * | 1954-06-23 | 1960-08-02 | Denis C Yang | Power indicator |
US2978902A (en) * | 1956-09-05 | 1961-04-11 | Clark Equipment Co | Torque measurement apparatus |
US3044294A (en) * | 1958-09-17 | 1962-07-17 | Bendix Corp | Mass flow sensing means |
US3049003A (en) * | 1956-09-05 | 1962-08-14 | Clark Equipment Co | Torque measurement apparatus |
US3058339A (en) * | 1958-09-02 | 1962-10-16 | Curtiss Wright Corp | Vibration detector and measuring instrument |
US3131559A (en) * | 1957-12-30 | 1964-05-05 | Bendix Corp | Flow measuring system |
US3208274A (en) * | 1959-11-05 | 1965-09-28 | Pitometer Log Corp | Apparatus for measuring angular displacement of a rotatable member by electronic means |
US3273386A (en) * | 1962-11-14 | 1966-09-20 | Sipler Harry | Torque transducer utilizing a magnetized shaft having a surface discontinuity reference mark |
US3309920A (en) * | 1964-06-02 | 1967-03-21 | British Columbin Res Council O | Torsion monitoring apparatus |
EP0437796A2 (en) * | 1990-01-12 | 1991-07-24 | Rockwell International Corporation | Unitary rotational speed sensor |
-
1945
- 1945-10-08 GB GB2617045A patent/GB600980A/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2947168A (en) * | 1954-06-23 | 1960-08-02 | Denis C Yang | Power indicator |
US2978902A (en) * | 1956-09-05 | 1961-04-11 | Clark Equipment Co | Torque measurement apparatus |
US3049003A (en) * | 1956-09-05 | 1962-08-14 | Clark Equipment Co | Torque measurement apparatus |
US3131559A (en) * | 1957-12-30 | 1964-05-05 | Bendix Corp | Flow measuring system |
US3058339A (en) * | 1958-09-02 | 1962-10-16 | Curtiss Wright Corp | Vibration detector and measuring instrument |
US3044294A (en) * | 1958-09-17 | 1962-07-17 | Bendix Corp | Mass flow sensing means |
US3208274A (en) * | 1959-11-05 | 1965-09-28 | Pitometer Log Corp | Apparatus for measuring angular displacement of a rotatable member by electronic means |
US3273386A (en) * | 1962-11-14 | 1966-09-20 | Sipler Harry | Torque transducer utilizing a magnetized shaft having a surface discontinuity reference mark |
US3309920A (en) * | 1964-06-02 | 1967-03-21 | British Columbin Res Council O | Torsion monitoring apparatus |
EP0437796A2 (en) * | 1990-01-12 | 1991-07-24 | Rockwell International Corporation | Unitary rotational speed sensor |
EP0437796A3 (en) * | 1990-01-12 | 1991-11-21 | Rockwell International Corporation | Unitary rotational speed sensor |
EP0632272A2 (en) * | 1990-01-12 | 1995-01-04 | Rockwell International Corporation | Unitary rotational speed sensor |
EP0632272A3 (en) * | 1990-01-12 | 1995-04-12 | Rockwell International Corp | Unitary rotational speed sensor. |
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