SE9503690L - Method and apparatus for determining the angular velocity of a rotating cylindrical axis of electrically conductive meter - Google Patents
Method and apparatus for determining the angular velocity of a rotating cylindrical axis of electrically conductive meterInfo
- Publication number
- SE9503690L SE9503690L SE9503690A SE9503690A SE9503690L SE 9503690 L SE9503690 L SE 9503690L SE 9503690 A SE9503690 A SE 9503690A SE 9503690 A SE9503690 A SE 9503690A SE 9503690 L SE9503690 L SE 9503690L
- Authority
- SE
- Sweden
- Prior art keywords
- shaft
- angular velocity
- magnetic field
- determining
- electrically conductive
- Prior art date
Links
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
- G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
- G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/003—Kinematic accelerometers, i.e. measuring acceleration in relation to an external reference frame, e.g. Ferratis accelerometers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
A method and a device for determining the angular velocity of a rotating, electrically conductive cylindrical shaft (1). A homogeneous magnetic field (3) is directed perpendicularly to the shaft in such a way that the magnetic field lines extend in the cross section plane of the shaft, perpendicular to the symmetry line (8) of the shaft. When the shaft is rotating, axial eddy currents are induced in the shaft which outside the shaft also generate a magnetic field of dipole type with a component (6) in the cross section plane of the shaft and perpendicular to the originally applied magnetic field. The magnitude of this component is determined by the angular velocity of the rotating shaft, and a measure of the angular velocity of the shaft is obtained by detecting this component with the aid of a measuring winding (7) in a plane parallel to the homogeneous magnetic field and which passes through the symmetry line of the shaft.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503690A SE9503690L (en) | 1995-10-20 | 1995-10-20 | Method and apparatus for determining the angular velocity of a rotating cylindrical axis of electrically conductive meter |
PCT/SE1996/001167 WO1997014968A1 (en) | 1995-10-20 | 1996-09-20 | A method and a device for determining the angular velocity of a rotating cylindrical shaft of electrically conductive material |
EP96935652A EP0888555A1 (en) | 1995-10-20 | 1996-09-20 | A method and a device for determining the angular velocity of a rotating cylindrical shaft of electrically conductive material |
JP9515732A JPH11513800A (en) | 1995-10-20 | 1996-09-20 | Method and apparatus for measuring the angular velocity of a rotating cylindrical shaft made of a conductive material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503690A SE9503690L (en) | 1995-10-20 | 1995-10-20 | Method and apparatus for determining the angular velocity of a rotating cylindrical axis of electrically conductive meter |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9503690D0 SE9503690D0 (en) | 1995-10-20 |
SE9503690L true SE9503690L (en) | 1997-04-21 |
Family
ID=20399900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9503690A SE9503690L (en) | 1995-10-20 | 1995-10-20 | Method and apparatus for determining the angular velocity of a rotating cylindrical axis of electrically conductive meter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0888555A1 (en) |
JP (1) | JPH11513800A (en) |
SE (1) | SE9503690L (en) |
WO (1) | WO1997014968A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1386172A1 (en) * | 2001-05-11 | 2004-02-04 | Siemens Aktiengesellschaft | Transmitter system for a ferraris movement transmitter |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1673439A1 (en) * | 1967-06-19 | 1971-04-29 | Trenkler Gerhard Dipl Ing | Eddy current speedometer with constant field excitation |
US3932813A (en) * | 1972-04-20 | 1976-01-13 | Simmonds Precision Products, Inc. | Eddy current sensor |
US4441077A (en) * | 1981-11-23 | 1984-04-03 | International Business Machines | Real time eddy current responsive Hall effect device tachometer |
US4406168A (en) * | 1982-03-30 | 1983-09-27 | Borg-Warner Corporation | System for measuring torque and/or speed of rotating shaft |
US4479390A (en) * | 1983-01-28 | 1984-10-30 | Borg-Warner Corporation | Transducer for measuring torque and/or speed of rotating shaft |
DE3314567C1 (en) * | 1983-04-22 | 1984-05-03 | Jiri Dipl.-Ing. 5100 Aachen Sobota | Sensor for measuring angular acceleration on rapidly rotating shafts |
US4751459A (en) * | 1986-09-18 | 1988-06-14 | Synektron Corporation | Magnetic tachometer or accelerometer having highly permeable eddy current flux circuit |
-
1995
- 1995-10-20 SE SE9503690A patent/SE9503690L/en not_active Application Discontinuation
-
1996
- 1996-09-20 JP JP9515732A patent/JPH11513800A/en active Pending
- 1996-09-20 WO PCT/SE1996/001167 patent/WO1997014968A1/en not_active Application Discontinuation
- 1996-09-20 EP EP96935652A patent/EP0888555A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0888555A1 (en) | 1999-01-07 |
JPH11513800A (en) | 1999-11-24 |
WO1997014968A1 (en) | 1997-04-24 |
SE9503690D0 (en) | 1995-10-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3697867A (en) | Vibration sensor utilizing eddy currents induced in member vibrating in the field of a magnet | |
JPH11513797A (en) | Position detection encoder | |
FI812349L (en) | FARING REQUIREMENTS FOR THE CONSTRUCTION OF THE MARKETS WITH ELECTRIC LEDNINGSFOERMAOGA | |
NO980911L (en) | A method for measuring nuclear magnetic resonance, as well as apparatus for carrying out the method | |
US5670877A (en) | Shaft rotation sensor with magnetic sensors angularly spaced apart with respect to a magnetic source | |
ATE322670T1 (en) | MEASUREMENT OF VOLTAGE IN A FERROMAGNETIC MATERIAL | |
US4929897A (en) | Method and apparatus for detecting cross sectional area variations in a elongate object by measuring radial magnetic flux variations using spaced-apart coils | |
GB980467A (en) | Induced current measuring apparatus | |
EP1360468A1 (en) | Portable magnetic transducer | |
SE9503690L (en) | Method and apparatus for determining the angular velocity of a rotating cylindrical axis of electrically conductive meter | |
US4963818A (en) | Current sensor having an element made of amorphous magnetic metal | |
FI65501B (en) | ANORDINATION FOR INDENTIFICATION AV MYNT ELLER LIKNANDE | |
JPH07218472A (en) | Method and equipment for measuring saturated magnetic flux density | |
FI67968B (en) | REQUIREMENTS FOR THE IDENTIFICATION OF AV MYNT ELLER LIKNANDE | |
US3513386A (en) | Contact-free speed measuring instruments | |
CN205860981U (en) | A kind of ferromagnetic material thickness detection apparatus based on magnetic bridge principle | |
GB1070859A (en) | Apparatus for the measurement of changes in diameter of wire or tubular metal and a method for the determination of the corrosion of such metal | |
US3372591A (en) | Flowmeter | |
US3488577A (en) | Asymmetric orthogonal coil susceptibility meter | |
SU691559A1 (en) | Apparatus for flaw detection of casing columns | |
SU781624A1 (en) | Apparatus for measuring shaft torque | |
US3302104A (en) | Apparatus for the location of axial and radial discontinuities in tubing using a rotating detector inclined to the tubing axis | |
SU139367A1 (en) | Magnetic Field Indicator Zero | |
SU824019A1 (en) | Materials | |
SU911386A1 (en) | Magnetic field azimuthal non-uniformity meter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 9503690-1 |