DE102008027719A1 - Inductive torque sensor for motor vehicle, comprises four angle sensors, and associated unit for evaluation by regulation of differential angles, and two switching circuits are provided - Google Patents
Inductive torque sensor for motor vehicle, comprises four angle sensors, and associated unit for evaluation by regulation of differential angles, and two switching circuits are provided Download PDFInfo
- Publication number
- DE102008027719A1 DE102008027719A1 DE200810027719 DE102008027719A DE102008027719A1 DE 102008027719 A1 DE102008027719 A1 DE 102008027719A1 DE 200810027719 DE200810027719 DE 200810027719 DE 102008027719 A DE102008027719 A DE 102008027719A DE 102008027719 A1 DE102008027719 A1 DE 102008027719A1
- Authority
- DE
- Germany
- Prior art keywords
- torque sensor
- evaluation
- angle sensors
- regulation
- angles
- 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.)
- Pending
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
- G01L3/12—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving photoelectric means
Abstract
Description
Die Erfindung betrifft einen Induktiven Drehmomentsensor gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to an inductive torque sensor according to the Preamble of claim 1.
Solche induktive Drehmomentsensoren werden z. B. in Kraftfahrzeugen eingesetzt, um Drehmomente wie Lenkmomente zu ermitteln. Dies wird zunehmend erforderlich, weil vermehrt elektromotorische Servoeinrichtungen zur Lenkhilfe eingesetzt werden. Diese benötigen das Lenkmoment zur Steuerung. Die Lenkmomente werden in einer Lenksäule durch einen Torsionsstab in Differenzwinkeln erkennbar und aus diesen berechnet. Hierfür werden die Verdrehungen an den Enden des Torsionsstabs mittels einer geeigneten induktiven Anordnung als Signale bestimmt und in Mittel zum Auswerten geleitet. Die Differenzwinkel der Torsion sind unabhängig von einer Stellung des Lenkrads zu bestimmen.Such inductive torque sensors are z. B. used in motor vehicles, to determine torques such as steering torques. This is becoming increasingly common required, because increased electromotive servos used for power steering. These need the steering torque for controlling. The steering moments are in a steering column through a torsion bar in difference angles and recognizable from these calculated. This is the twisting at the ends the torsion bar by means of a suitable inductive arrangement determined as signals and directed to means for evaluation. The difference angle The torsion are independent of a position of the steering wheel to determine.
Aus
der
Die
Bei den bekannten Drehmomentsensoren sind die Mittel zur Bestimmung des Torsionswinkels der Lenksäule befestigt, so dass sie deren Drehungen mitmachen. Daher sind zur Übertragung der Signale zu Vorrichtungen im Fahrzeug so genannte Wickelfedern erforderlich, die die Lenkbewegungen erlauben, ohne dass eine Kontaktierung gestört wird. Weiter ist es bekannt, die Mittel zur Bestimmung des Differenzwinkels der Torsion fest in Relation zum Fahrzeug einzubauen. Hierfür ist es erforderlich, absolute Drehwinkel an den Enden des Torsionsstabs gegenüber dem Fahrzeug zu bestimmen, um aus der Differenz das Drehmoment zu bestimmen. Hierbei ist bei Kraftfahrzeugen Redundanz gefordert, so dass insgesamt mindestens vier Winkelsensoren zur Bestimmung des Lenkmoments vorhanden sein müssen. Bisher ist es bekannt, Signale der Statoren beliebig mindestens einer Auswertevorrichtung zuzuordnen. Hierbei ist es aber möglich, dass bereits bei Vorliegen eines einfachen Fehlers eine Winkeldifferenz nicht mehr bestimmt werden kann. Dies führt zu Fehlfunktionen der Drehmomentbestimmung und somit der Servolenkung.at The known torque sensors are the means of determination attached to the torsion angle of the steering column, so they whose turns participate. Therefore, to transfer the Signals to devices in the vehicle so-called coil springs required which allow the steering movements without disturbing a contact becomes. It is also known, the means for determining the difference angle to install the torsion firmly in relation to the vehicle. Therefor It is necessary to face absolute angles of rotation at the ends of the torsion bar the vehicle to determine from the difference the torque determine. Redundancy is required in motor vehicles, so that a total of at least four angle sensors for determining of the steering torque must be present. So far it has been known Signals of the stators arbitrary at least one evaluation device assigned. However, it is possible that already exists a simple error an angle difference is no longer determined can be. This leads to malfunctions of the torque determination and thus the power steering.
Aufgabe der Erfindung ist es, einen Drehmomentsensor mittels Bestimmung des Differenzwinkels der Torsion zu schaffen, bei dem ohne den Einsatz von Schleiferfedern mit einfachen Mitteln eine einfache und redundante Bestimmung gewährleistet ist.task The invention is a torque sensor by means of determination to create the differential angle of torsion, in which without the use of grinder springs with simple means a simple and redundant Determination is ensured.
Die Aufgabe ist durch die Merkmale des Anspruchs 1 gelöst. Es sind zwei Schaltkreise angeordnet, wobei jedem Schaltkreis zwei unterschiedliche zu bestimmende Winkel zugeordnet sind. Hierbei werden in jedem der Schaltkreise zunächst die einzelnen Winkel bestimmt. Anschließend wird in dem Schaltkreis oder in einer separaten Auswerteeinheit die Differenz aus den Winkeln berechnet. Auf diese Weise ist eine Redundanz gegeben, weil in jedem der Schaltkreise paarweise zumindest die erforderlichen Winkel berechnet werden. Bei Ausfall z. B. eines der Schaltkreise ist immer noch die Funktion des anderen Schaltkreises gegeben, der die Winkel bestimmt und gegebenenfalls den Differenzwinkel berechnet. Die Funktionssicherheit der Servolenkung wird erhöht.The The object is solved by the features of claim 1. There are two circuits arranged, each circuit two are associated with different angles to be determined. Here are in each of the circuits, first the individual angles certainly. Subsequently, in the circuit or in a separate evaluation unit calculates the difference from the angles. In this way, redundancy is given because in each of the circuits in pairs, at least the required angles are calculated. In case of failure z. B. one of the circuits is still the function the other circuit determines the angle and, where appropriate calculates the difference angle. The reliability of the power steering is elevated.
Der Unteranspruch betrifft eine vorteilhafte Ausgestaltung der Erfindung.Of the Subclaim relates to an advantageous embodiment of the invention.
In einer bevorzugten Ausführung beträgt das Winkelverhältnis der unterschiedlichen Winkelsensoren 1:2, also z. B. 20° und 40°. Hierdurch werden gegenseitige Störungen der Winkelsensoren minimiert.In a preferred embodiment is the angular ratio the different angle sensors 1: 2, ie z. B. 20 ° and 40 °. As a result, mutual interference of Angle sensors minimized.
Anhand der beigefügten Zeichnungen wird die Erfindung nachfolgend näher erläutert. Dabei zeigt:Based In the accompanying drawings, the invention will be described below explained in more detail. Showing:
Wie
aus der
Jede
Rotorscheibe
Auf
der Leiterplatte
Auf
der Leiterplatte
Zum
elektrischen Anschluss an z. B. ein Steuergerät ist auf
der Leiterplatte eine Steckbuchse
Im
Betrieb werden die Rotoren
- 11
- Leiterplattecircuit board
- 22
- Rotorscheiberotor disc
- 33
- Rotorstrukturrotor structure
- 44
- Gehäusecasing
- 55
-
Trägerstruktur
6 support structure6 - 77
- Schaltungcircuit
- 88th
- Steckbuchsereceptacle
- 99
- Scheibedisc
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 102004019379 A1 [0003] DE 102004019379 A1 [0003]
- - DE 10225013 A1 [0004] - DE 10225013 A1 [0004]
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810027719 DE102008027719A1 (en) | 2008-06-11 | 2008-06-11 | Inductive torque sensor for motor vehicle, comprises four angle sensors, and associated unit for evaluation by regulation of differential angles, and two switching circuits are provided |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810027719 DE102008027719A1 (en) | 2008-06-11 | 2008-06-11 | Inductive torque sensor for motor vehicle, comprises four angle sensors, and associated unit for evaluation by regulation of differential angles, and two switching circuits are provided |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008027719A1 true DE102008027719A1 (en) | 2009-12-17 |
Family
ID=41317680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810027719 Pending DE102008027719A1 (en) | 2008-06-11 | 2008-06-11 | Inductive torque sensor for motor vehicle, comprises four angle sensors, and associated unit for evaluation by regulation of differential angles, and two switching circuits are provided |
Country Status (1)
Country | Link |
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DE (1) | DE102008027719A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2420803A1 (en) * | 2010-08-13 | 2012-02-22 | BALLUFF GmbH | Device for recording the torsion angle of a shaft and/or the torque of a shaft and method for operating the device |
WO2019158296A1 (en) * | 2018-02-14 | 2019-08-22 | Robert Bosch Gmbh | Steering device comprising a steering sensor unit for inductive detection of at least one piece of steering information |
DE102022102604A1 (en) | 2022-02-03 | 2023-08-03 | Johannes Prettl | Relative twist detection device and crank assembly |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871215A (en) * | 1971-05-10 | 1975-03-18 | Massachusetts Inst Technology | Opto-electronic apparatus to generate a pulse-modulated signal indicative of the mechanical state of a system |
DE2811809B1 (en) * | 1978-03-16 | 1979-08-02 | Mannesmann Ag | Transmitter for measuring angles of rotation between two measuring points of a machine element transmitting a torque |
JPS5965738A (en) * | 1982-10-08 | 1984-04-14 | Ono Sokki Co Ltd | Torque detector |
US4680976A (en) * | 1985-11-15 | 1987-07-21 | Vibro-Meter Sa | Torque or angle of torsion measuring device |
US4682104A (en) * | 1983-07-29 | 1987-07-21 | Regie Nationale Des Usines Renault | Angular displacement pickup, particularly for the detection of torque in power steering |
EP0313999A2 (en) * | 1987-10-28 | 1989-05-03 | Rohs, Ulrich, Dr. | Arrangement for measuring torque of a rotating shaft |
DE4232993C2 (en) * | 1992-10-01 | 1995-11-02 | A B Elektronik Gmbh | Device for measuring torsion and / or relative angular movement |
DE19941464A1 (en) * | 1999-09-01 | 2001-03-15 | Hella Kg Hueck & Co | Inductive position sensor |
JP2002350181A (en) * | 2001-05-30 | 2002-12-04 | Toyota Motor Corp | Resolver and rotation-angle detector |
DE10225013A1 (en) | 2002-06-06 | 2003-12-18 | Hella Kg Hueck & Co | Inductive differential angle sensor comprises at least one stator circuit board which at least over certain sections is provided with plastic glide surfaces in contact with rotor circuit boards |
DE10357146A1 (en) * | 2003-12-06 | 2005-06-30 | Robert Bosch Gmbh | Angular displacement and or torque measurement device, especially for a motor vehicle, comprises capacitors with moving capacitor plates attached to the steering column so that they move relative to fixed capacitor plates |
DE102004019379A1 (en) | 2004-04-19 | 2005-11-10 | Volkswagen Ag | Detection method for a differential angle detects first and second swing angles in respective first and second components so as to calculate the differential angle |
DE60124333T2 (en) * | 2000-03-16 | 2007-04-26 | BEI Sensors & Systems Co., Inc., Sylmar | Non-contact torque transducer |
-
2008
- 2008-06-11 DE DE200810027719 patent/DE102008027719A1/en active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871215A (en) * | 1971-05-10 | 1975-03-18 | Massachusetts Inst Technology | Opto-electronic apparatus to generate a pulse-modulated signal indicative of the mechanical state of a system |
DE2811809B1 (en) * | 1978-03-16 | 1979-08-02 | Mannesmann Ag | Transmitter for measuring angles of rotation between two measuring points of a machine element transmitting a torque |
JPS5965738A (en) * | 1982-10-08 | 1984-04-14 | Ono Sokki Co Ltd | Torque detector |
US4682104A (en) * | 1983-07-29 | 1987-07-21 | Regie Nationale Des Usines Renault | Angular displacement pickup, particularly for the detection of torque in power steering |
US4680976A (en) * | 1985-11-15 | 1987-07-21 | Vibro-Meter Sa | Torque or angle of torsion measuring device |
EP0313999A2 (en) * | 1987-10-28 | 1989-05-03 | Rohs, Ulrich, Dr. | Arrangement for measuring torque of a rotating shaft |
DE4232993C2 (en) * | 1992-10-01 | 1995-11-02 | A B Elektronik Gmbh | Device for measuring torsion and / or relative angular movement |
DE19941464A1 (en) * | 1999-09-01 | 2001-03-15 | Hella Kg Hueck & Co | Inductive position sensor |
DE60124333T2 (en) * | 2000-03-16 | 2007-04-26 | BEI Sensors & Systems Co., Inc., Sylmar | Non-contact torque transducer |
JP2002350181A (en) * | 2001-05-30 | 2002-12-04 | Toyota Motor Corp | Resolver and rotation-angle detector |
DE10225013A1 (en) | 2002-06-06 | 2003-12-18 | Hella Kg Hueck & Co | Inductive differential angle sensor comprises at least one stator circuit board which at least over certain sections is provided with plastic glide surfaces in contact with rotor circuit boards |
DE10357146A1 (en) * | 2003-12-06 | 2005-06-30 | Robert Bosch Gmbh | Angular displacement and or torque measurement device, especially for a motor vehicle, comprises capacitors with moving capacitor plates attached to the steering column so that they move relative to fixed capacitor plates |
DE102004019379A1 (en) | 2004-04-19 | 2005-11-10 | Volkswagen Ag | Detection method for a differential angle detects first and second swing angles in respective first and second components so as to calculate the differential angle |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2420803A1 (en) * | 2010-08-13 | 2012-02-22 | BALLUFF GmbH | Device for recording the torsion angle of a shaft and/or the torque of a shaft and method for operating the device |
US9026378B2 (en) | 2010-08-13 | 2015-05-05 | Balluff Gmbh | Device for detecting the twist angle of a shaft and/or a torque occurring on the shaft and methods for operating the device |
WO2019158296A1 (en) * | 2018-02-14 | 2019-08-22 | Robert Bosch Gmbh | Steering device comprising a steering sensor unit for inductive detection of at least one piece of steering information |
DE102022102604A1 (en) | 2022-02-03 | 2023-08-03 | Johannes Prettl | Relative twist detection device and crank assembly |
WO2023147969A1 (en) | 2022-02-03 | 2023-08-10 | PRETTL, Johannes | Relative-rotation measuring device and pedal crank assembly |
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Effective date: 20150310 |
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R081 | Change of applicant/patentee |
Owner name: HELLA GMBH & CO. KGAA, DE Free format text: FORMER OWNER: HELLA KGAA HUECK & CO., 59557 LIPPSTADT, DE |
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R084 | Declaration of willingness to licence |