DE10318482B3 - Acceleration measurement device, e.g. for machine tool use, comprises an eddy current generating assembly with planar sensor coils positioned so that their middle axis are coaxial with the center of secondary magnetic fields - Google Patents
Acceleration measurement device, e.g. for machine tool use, comprises an eddy current generating assembly with planar sensor coils positioned so that their middle axis are coaxial with the center of secondary magnetic fields Download PDFInfo
- Publication number
- DE10318482B3 DE10318482B3 DE2003118482 DE10318482A DE10318482B3 DE 10318482 B3 DE10318482 B3 DE 10318482B3 DE 2003118482 DE2003118482 DE 2003118482 DE 10318482 A DE10318482 A DE 10318482A DE 10318482 B3 DE10318482 B3 DE 10318482B3
- Authority
- DE
- Germany
- Prior art keywords
- permanent magnets
- sensor coils
- magnetic fields
- measuring
- coils
- 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 - Fee Related
Links
Classifications
-
- 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
- G01P15/005—Kinematic accelerometers, i.e. measuring acceleration in relation to an external reference frame, e.g. Ferratis accelerometers measuring translational acceleration
-
- 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
-
- 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
- G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
- G01P3/505—Devices characterised by the use of electric or magnetic means for measuring linear speed by using eddy currents
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Messen relativer Beschleunigungen mit einem als Wirbelstromkörper ausgebildeten Messmittel, mit mehreren im wesentlichen senkrecht zum Messmittel angeordneten Permanentmagneten abwechselnder Polarität zur Erzeugung von aus ihren dem Messmittel zugewandten Stirnflächen austretenden primären Magnetfeldern sowie mit mehreren als Flachspulen ausgebildeten Sensorspulen, deren Mittenachsen ebenfalls im wesentlichen senkrecht zum Messmittel orientiert sind und die zur Erfassung der Veränderungen sekundärer Magnetfelder dienen, die bei Beschleunigungen des Messmittels durch die im Messmittel wirksamen Wirbelströme generiert werden.The invention relates to a device for measuring relative accelerations with an eddy current body Measuring means, with several substantially perpendicular to the measuring means Permanent magnets of alternating polarity to generate them from primary magnetic fields emerging from the end faces facing the measuring device and with several sensor coils designed as flat coils, the Center axes also oriented essentially perpendicular to the measuring equipment and are used to record changes in secondary magnetic fields serve when accelerating the measuring device by the in the measuring device effective eddy currents to be generated.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der in Betracht gezogenen Art zu schaffen, deren Aufbau kompakter als der Aufbau der bekannten Vorrichtung ist und bei der sich durch eine vom Herkömmlichen abweichende Anordnung der Sensorspulen eine besonders hohe Grenzfrequenz der Vorrichtung realisieren lässt.The invention has for its object a To create device of the type under consideration, its construction is more compact than the structure of the known device and in the different from the conventional deviating arrangement of the sensor coils has a particularly high cutoff frequency Device can be realized.
Gelöst wird die vorstehende Aufgabe erfindungsgemäß dadurch, dass die Permanentmagnete unmittelbar nebeneinander angeordnet sind und mindestens jeweils ein Abschnitt der Wicklungen zweier Sensorspulen derart auf die Stirnfläche mindestens eines Permanentmagneten appliziert ist, dass die Zentren der sekundären Magnetfelder im wesentlichen durch die Mittenachsen der Sensorspulen verlaufen.The above task is solved according to the invention by that the permanent magnets are arranged directly next to each other and at least a portion of the windings of two sensor coils so on the face at least one permanent magnet is applied that the centers the secondary Magnetic fields essentially through the center axes of the sensor coils run.
Die Anbringung jeweils zweier Abschnitte von Sensorspulen an den Stirnflächen der Permanentmagnete macht Zwischenräume zwischen den Permanentmagneten entbehrlich und kommt somit einer kompakten Bauweise der Vorrichtung sehr entgegen. Die Art der Anordnung der Sensorspulen ermöglicht es, die von den Wirbelströmen erzeugten sekundären Magnetfelder bzw. deren Veränderungen optimal zu erfassen und somit die Empfindlichkeit der Vorrichtung zu steigern. Da Zwischenräume zwischen den Permanentmagneten entbehrlich sind, lässt sich mit vergleichsweise kleinen Magneten eine intensive Durchflutung des Messmittels erreichen.The attachment of two sections of Sensor coils on the end faces the permanent magnet creates gaps between the permanent magnets dispensable and thus comes a compact design of the device very contrary. The type of arrangement of the sensor coils enables that of the eddy currents generated secondary Magnetic fields and their changes to capture optimally and thus the sensitivity of the device to increase. Because spaces between the permanent magnets are dispensable, can be compared with small magnets achieve an intensive flooding of the measuring equipment.
Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen und der nachstehenden Beschreibung mehrerer, in den beigefügten Zeichnungen schematisch dargestellter Ausführungsformen der Erfindung.Other features and details the invention result from the dependent claims and the following Description of several, schematically in the accompanying drawings illustrated embodiments the invention.
Es zeigen:Show it:
In
Zur Befestigung der Sensorspulen
Während
im Falle der
Der wannenförmige Träger
Bei beiden dargestellten Lösungen haben die
Wirbelstromfelder aufgrund der wechselnden magnetischen Polarität der Permanentmagnete
In
Das neuartige Prinzip der in einer
quasi zweiten Ebenen oberhalb der Stirnfläche der Permanentmagnete angeordneten
Sensorspulen kann auch bei zylindrischen Ausführungsformen der in der
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003118482 DE10318482B3 (en) | 2003-04-16 | 2003-04-16 | Acceleration measurement device, e.g. for machine tool use, comprises an eddy current generating assembly with planar sensor coils positioned so that their middle axis are coaxial with the center of secondary magnetic fields |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003118482 DE10318482B3 (en) | 2003-04-16 | 2003-04-16 | Acceleration measurement device, e.g. for machine tool use, comprises an eddy current generating assembly with planar sensor coils positioned so that their middle axis are coaxial with the center of secondary magnetic fields |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10318482B3 true DE10318482B3 (en) | 2004-10-07 |
Family
ID=32946409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003118482 Expired - Fee Related DE10318482B3 (en) | 2003-04-16 | 2003-04-16 | Acceleration measurement device, e.g. for machine tool use, comprises an eddy current generating assembly with planar sensor coils positioned so that their middle axis are coaxial with the center of secondary magnetic fields |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10318482B3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109387664A (en) * | 2017-08-07 | 2019-02-26 | 纳博特斯克有限公司 | Speed detector and stray magnetic field suppressing method |
US11762120B2 (en) * | 2018-11-29 | 2023-09-19 | Baker Hughes Holdings Llc | Power-efficient transient electromagnetic evaluation system and method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125097A1 (en) * | 2001-05-23 | 2002-11-28 | Heidenhain Gmbh Dr Johannes | Ferraris sensor for acceleration measurement has magnets and detector coils arranged alternately on eddy current body |
-
2003
- 2003-04-16 DE DE2003118482 patent/DE10318482B3/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125097A1 (en) * | 2001-05-23 | 2002-11-28 | Heidenhain Gmbh Dr Johannes | Ferraris sensor for acceleration measurement has magnets and detector coils arranged alternately on eddy current body |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109387664A (en) * | 2017-08-07 | 2019-02-26 | 纳博特斯克有限公司 | Speed detector and stray magnetic field suppressing method |
EP3450987A3 (en) * | 2017-08-07 | 2019-06-12 | Nabtesco Corporation | Speed detecting device and stray magnetic field suppressing method |
US11762120B2 (en) * | 2018-11-29 | 2023-09-19 | Baker Hughes Holdings Llc | Power-efficient transient electromagnetic evaluation system and method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: HUEBNER ELEKTROMASCHINEN GMBH, 10967 BERLIN, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: BAUMER HUEBNER GMBH, 10967 BERLIN, DE |
|
8381 | Inventor (new situation) |
Inventor name: HILLER, BERNHARD, 13465 BERLIN, DE Inventor name: WILHELMY, LOTHAR, DR., 14195 BERLIN, DE |
|
R084 | Declaration of willingness to licence | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |