DE102008029055A1 - Dynamometer, has transducer device and sensor device movable relative to each other by force, where evaluation of force acting on force discharging element takes place by discharging element from transducer device to sensor device - Google Patents
Dynamometer, has transducer device and sensor device movable relative to each other by force, where evaluation of force acting on force discharging element takes place by discharging element from transducer device to sensor device Download PDFInfo
- Publication number
- DE102008029055A1 DE102008029055A1 DE102008029055A DE102008029055A DE102008029055A1 DE 102008029055 A1 DE102008029055 A1 DE 102008029055A1 DE 102008029055 A DE102008029055 A DE 102008029055A DE 102008029055 A DE102008029055 A DE 102008029055A DE 102008029055 A1 DE102008029055 A1 DE 102008029055A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor
- force
- magnetic field
- transmitter
- devices
- 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- Withdrawn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
- 238000011156 evaluation Methods 0.000 title claims abstract description 6
- 238000007599 discharging Methods 0.000 title abstract 4
- 230000005291 magnetic effect Effects 0.000 claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000005294 ferromagnetic effect Effects 0.000 claims 2
- 230000003313 weakening effect Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
- G01L1/122—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using permanent magnets
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
- G01L5/169—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
Die
Erfindung betrifft eine zylinderförmige Wägezelle
bzw. Kraftmessvorrichtung, welche im Gegensatz zu üblichen
Wägezellen nicht mit Dehnungsmesstreifen sondern mit mindestends
einer magnetfelderzeugenden Gebereinrichtung (
Die
bei einer durch auf den Bolzen einwirkenden Kraft verursachte Durchbiegung
des selbigen verursacht eine Relativverschiebung der an einem Ende
des Bolzens angebrachten Gebereinrichtung (
Diese
Erweiterung des Meßprinzipes von der reinen Auswertung
der zur einwirkenden Kraft proportionalen Verschiebung von Gebersystem
zum Sensorsystem um die Auswertung der durch die Luftspaltänderung
verursachte Nichtlinearität in der Lastkurve an Hand der
mindestens 2-fach vorhandenen Sensorelemente ist ein prinzipieller
Unterschied zu dem aus in
In dem hier beschriebenen Meßprinzip wird die durch den Biegebalken verursachte Luftspaltänderung zur Ermittlung der Kippung verwendet und an Hand dieser mögliche Korrekturen durchgeführt. Als Größe für die einwirkende Kraft wird nur die geringe Relativverschiebung von Sensorlement zu Geberelement verwendet.In the measuring principle described here is the by the bending beam caused air gap change to determine the tilt used and performed on the basis of these possible corrections. As a size for the acting force becomes only the slight relative displacement of sensor element to encoder element used.
Im
Gegensatz zu
Ein
weiterer Unterschied liegt darin, dass im Gegensatz zu den bekannten
magnetischen Anordnungen für magnetische Sensoren und den
dabei verwendeten Messungen im Nebenfeld bzw. in Hauptpolrichtung
des Magneten, in dieser Messanordnung für jedes Sensorelement
ein zugehöriges magnetfelderzeugendes Geberssystem, bestehend aus
einem einfachen magnetischen Dipol, angeordnet wird (siehe
Das bedeutet, dass zu den bekannten Quadropolanordnungen hier für jede Komponente ein magnetfelderzeugendes Gebersystem verwendet wird, an dessen Nord-Süd-Übergang direkt die jeweiligen Kraftkomponenten gemessen werden. Diese Anordnung hat eine Verbesserung des Kennwertes zur Folge und im Gegensatz zu den Quadropolanordnungen ist zudem keine gegenseitige Beeinflussung der Gebersysteme im Bereich der Sensorelemente vorhanden. Diese Anordnung zeichnet sich durch eine sehr hohe Linearität aus. Die Nichtlinearität des Biegebalkens kann mittels der virtuellen Quadropolanordnung und den rechtwinklig zueinander angeordneten Messelementen ermittelt und kompensiert werden.The means that to the well-known quadpolar arrangements here for each component uses a magnetic field generating donor system, at the north-south transition directly the respective Force components are measured. This arrangement has an improvement of the characteristic result and in contrast to the quadrupole arrangements is also no mutual influence of the encoder systems in the area the sensor elements available. This arrangement is characterized by a very high linearity. The nonlinearity of the bending beam can by means of the virtual quadrupole arrangement and the measuring elements arranged at right angles to one another and be compensated.
Zur
Zerlegung der gemessenen Kräfte in Ihre Wirkungsrichtungen
werden diese magnetfelderzeugenden Gebersysteme vorzugsweise in
einem Winkel von 90° zueinander angeordnet. Diese Anordnung
ermöglicht die gleichen Messungen wie in der
Eine
weitere Möglichkeit der Anordnung von magnetfelderzeugender
Gebereinrichtung und magnetfeldempfindlichem Sensorlement (Hall-IC,
GMR- oder AMR-Brücken) wird in
Der
einfachere Aufbau als Schraube und die Möglichkeit der
Zerlegung der Kräfte in Ihre Ursprungskomponenten ermöglicht
zudem eine beliebige Krafteinleitung (siehe
Zur
Optimierung des Kennwertes bei Torsionsmessungen werden die Sensorlemente
in einem maximal möglichen Abstand zum Mittelpunkt bzw. zur
Achse der zylinderförmigen Schraube angeordnet (siehe
Zeichnungendrawings
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 3515126 A1 [0003] - DE 3515126 A1 [0003]
- - DE 10229023 [0005] - DE 10229023 [0005]
- - WO 2004/083792 A1 [0005] - WO 2004/083792 A1 [0005]
- - EP 1347273 A1 [0008] - EP 1347273 A1 [0008]
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008029055A DE102008029055A1 (en) | 2008-06-18 | 2008-06-18 | Dynamometer, has transducer device and sensor device movable relative to each other by force, where evaluation of force acting on force discharging element takes place by discharging element from transducer device to sensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008029055A DE102008029055A1 (en) | 2008-06-18 | 2008-06-18 | Dynamometer, has transducer device and sensor device movable relative to each other by force, where evaluation of force acting on force discharging element takes place by discharging element from transducer device to sensor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102008029055A1 true DE102008029055A1 (en) | 2009-12-24 |
Family
ID=41334873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102008029055A Withdrawn DE102008029055A1 (en) | 2008-06-18 | 2008-06-18 | Dynamometer, has transducer device and sensor device movable relative to each other by force, where evaluation of force acting on force discharging element takes place by discharging element from transducer device to sensor device |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102008029055A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012084069A1 (en) * | 2010-12-22 | 2012-06-28 | Aktiebolaget Skf | Force sensor |
| JP2016050902A (en) * | 2014-09-02 | 2016-04-11 | Ntn株式会社 | Load sensor, electric linear actuator, and electric brake device |
| DE102016111262B3 (en) * | 2016-06-20 | 2017-12-07 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Force-torque sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3515126A1 (en) | 1985-04-26 | 1986-10-30 | Robert Bosch Gmbh, 7000 Stuttgart | Electromechanical dynamometer |
| EP1347273A1 (en) | 2002-03-23 | 2003-09-24 | Soehnle-Waagen GmbH & Co. KG | Load cell |
| DE10229023A1 (en) | 2002-06-28 | 2004-01-29 | Robert Bosch Gmbh | force sensor |
| WO2004083792A1 (en) | 2003-03-21 | 2004-09-30 | Bizerba Gmbh & Co. Kg | Dynamometric cell |
-
2008
- 2008-06-18 DE DE102008029055A patent/DE102008029055A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3515126A1 (en) | 1985-04-26 | 1986-10-30 | Robert Bosch Gmbh, 7000 Stuttgart | Electromechanical dynamometer |
| EP1347273A1 (en) | 2002-03-23 | 2003-09-24 | Soehnle-Waagen GmbH & Co. KG | Load cell |
| DE10229023A1 (en) | 2002-06-28 | 2004-01-29 | Robert Bosch Gmbh | force sensor |
| WO2004083792A1 (en) | 2003-03-21 | 2004-09-30 | Bizerba Gmbh & Co. Kg | Dynamometric cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012084069A1 (en) * | 2010-12-22 | 2012-06-28 | Aktiebolaget Skf | Force sensor |
| US9109966B2 (en) | 2010-12-22 | 2015-08-18 | Aktiebolaget Skf | Two dimension external force sensor |
| JP2016050902A (en) * | 2014-09-02 | 2016-04-11 | Ntn株式会社 | Load sensor, electric linear actuator, and electric brake device |
| DE102016111262B3 (en) * | 2016-06-20 | 2017-12-07 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Force-torque sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8122 | Nonbinding interest in granting licences declared | ||
| 8110 | Request for examination paragraph 44 | ||
| R016 | Response to examination communication | ||
| R016 | Response to examination communication | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130101 |