DE102005061666A1 - Sensor device for measuring torque and rotation angle of steering shaft of motor vehicle, has rotary units and torsion markers that are formed as torsion electrodes, and sensor plate with ring electrodes coupled with transmission electrodes - Google Patents
Sensor device for measuring torque and rotation angle of steering shaft of motor vehicle, has rotary units and torsion markers that are formed as torsion electrodes, and sensor plate with ring electrodes coupled with transmission electrodes Download PDFInfo
- Publication number
- DE102005061666A1 DE102005061666A1 DE102005061666A DE102005061666A DE102005061666A1 DE 102005061666 A1 DE102005061666 A1 DE 102005061666A1 DE 102005061666 A DE102005061666 A DE 102005061666A DE 102005061666 A DE102005061666 A DE 102005061666A DE 102005061666 A1 DE102005061666 A1 DE 102005061666A1
- Authority
- DE
- Germany
- Prior art keywords
- electrodes
- sensor
- torsion
- sensor device
- rotary
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
- B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0215—Determination of steering angle by measuring on the steering column
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
- G01D5/2403—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by moving plates, not forming part of the capacitor itself, e.g. shields
-
- 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
- G01L3/14—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft
- G01L3/1407—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs
- G01L3/1428—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs using electrical transducers
- G01L3/1442—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs using electrical transducers involving electrostatic means
Abstract
Description
Die Erfindung bezieht sich auf eine Sensoreinrichtung zum Messen des Drehmoments und des Drehwinkels einer drehbaren Welle, insbesondere einer Lenkwelle eines Kraftfahrzeugs mittels einer auf einer Seite eines tordierbaren Abschnitts der Welle angesetzten mitdrehenden Markierscheibe, die auf einer Seite eine umlaufende Drehmarkierung und auf der gegenüberliegenden ebenen Seite eine Torsionsmarkierung aufweist, wobei die Drehmarkierung stationären Sensorelementen zur Erfassung der Drehwinkels der Welle und die Torsionsmarkierung mitdrehenden Sensorelementen zugewandt ist, die zur Bestimmung des Torsionswinkels des tordierbaren Abschnitts fest mit der anderen Seite des tordierbaren Abschnitts der Welle verbunden sind.The The invention relates to a sensor device for measuring the Torque and the angle of rotation of a rotatable shaft, in particular a steering shaft of a motor vehicle by means of a on one side a twistable portion of the shaft attached co-rotating Marking disc, on one side a rotating rotary marking and on the opposite level side has a torsion marking, wherein the turning mark stationary Sensor elements for detecting the rotation angle of the shaft and the Torsionsmarking facing co-rotating sensor elements, the for determining the torsion angle of the twistable section connected to the other side of the twistable portion of the shaft are.
Durch
die
Ferner
ist z.B. durch die
Der Erfindung liegt die Aufgabe zugrunde, die Herstellung der Sensoreinrichtung zu vereinfachen und ihre Funktionssicherheit zu erhöhen.Of the Invention is based on the object, the production of the sensor device to simplify and increase their reliability.
Diese Aufgabe wird dadurch gelöst, dass die mitdrehenden Sensorelemente an einer zur Markierscheibe parallelen Drehscheibe ausgebildet sind, dass die mitdrehenden Sensorelemente und die Torsionsmarkierung als flache, einander eng benachbarte parallele, kapazitiv gekoppelte, wechselseitig umlaufend konfigurierte Torsionselektroden ausgebildet sind, und dass die Sensorscheibe mit ihren Torsionselektroden elektrisch verbundene Ringelektroden aufweist, die mit stationären Zuführelektroden der Vorrichtung gekoppelt sind.These Task is solved by that the co-rotating sensor elements at one to the Markierscheibe are formed parallel turntable that the co-rotating sensor elements and the torsion marking as flat, closely spaced parallel, capacitively coupled, mutually encircling configured Torsion electrodes are formed, and that the sensor disk having ring electrodes electrically connected to its torsion electrodes, those with stationary ones feeding electrodes the device are coupled.
Eine derartige Einrichtung hat den Vorteil, dass die umlaufend angeordneten konzentrischen Elektroden eine große Gesamtkoppelfläche von entsprechend hoher Signalstärke aufweisen, so dass der Scheibendurchmesser entsprechend verringert werden kann. Durch die zentrierte Anordnung und große Überlappung der summarisch wirkenden Elektroden wird die Einrichtung gegen mechanischen Versatz der Achslagen der beiden Wellenabschnitte vor und nach dem Torsionsabschnitt unempfindlich. Die beweglichen Teile der Einrichtung sind drehfest mit der Lenkwelle verbunden und durchweg zirkulär und somit drehsymmetrisch ausgebildet. Sie können daher auch den Fliehkräften höherer Drehzahlen z.B. zur Schlupfregelung an Antriebswellen ausgesetzt werden. Die Elektrodenträger können in der Art einer Leiterplatte ausgebildet und bearbeitet werden, wobei die Funktionselemente z.B. in einem üblichen photolithografischen Verfahren mit geringem Aufwand ausgebildet werden können. Die Sensorsignale können neben der Drehmoments nicht nur zur Bestimmung der absoluten Winkellage, sondern auch zur Erfassung einer Winkelgeschwindigkeit genutzt werden.A Such device has the advantage that the circumferentially arranged concentric electrodes have a large total coupling area of correspondingly high signal strength have, so that the disc diameter are reduced accordingly can. Due to the centered arrangement and large overlap of the summarily acting Electrodes become the device against mechanical misalignment of the axis positions the two shaft sections before and after the torsion insensitive. The moving parts of the device are rotationally fixed to the steering shaft connected and consistently circular and thus formed rotationally symmetrical. They can therefore also the centrifugal forces of higher speeds e.g. be exposed to slip control on drive shafts. The electrode support can be formed and processed in the manner of a circuit board, where the functional elements are e.g. in a usual photolithographic Procedures can be formed with little effort. The Sensor signals can in addition to the torque not only for the determination of the absolute angular position, but also be used to detect an angular velocity.
Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den in den Unteransprüchen beschriebenen Merkmalen.advantageous Further developments of the invention will become apparent from the described in the dependent claims Features.
Die flachen Übertragerelektroden nach Anspruch 2 sind kapazitiv mit den eng benachbarten ringförmigen flachen Zuführelektroden auf einer stationären Übertragerscheibe gekoppelt. Eine solche Kopplung ist mechanisch unempfindlich und entsprechend Funktionssicher.The flat transformer electrodes according to claim 2 are capacitive with the closely adjacent annular flat feeding electrodes on a stationary transmitter disk coupled. Such a coupling is mechanically insensitive and accordingly functionally reliable.
Die Funktionselemente nach Anspruch 3 ermöglichen ebenfalls eine großflächige Kopplung von hoher Sensitivität. Durch die konzentrische Anordnung und Beschaltung sind die auszuwertenden Signale gegen mechanischen Störeinflüsse weitgehend unempfindlich. Die gesamte Einrichtung kann entsprechend der Scheibendicken sehr kurz, kompakt und stabil ausgebildet werden.The Functional elements according to claim 3 also allow a large-area coupling of high sensitivity. Due to the concentric arrangement and wiring are the evaluated Signals largely insensitive to mechanical interference. The entire device can be very according to the thickness of the pane be formed short, compact and stable.
Die Grobdrehelektroden nach Anspruch 4 können zusammen mit den Drehelektroden in einem Arbeitsgang ausgebildet werden.The Coarse rotary electrodes according to claim 4, together with the rotary electrodes be trained in one operation.
Durch die wechselseitig angeordneten Elektrodenringe nach Anspruch 5 werden die Sende- oder Empfangssignale in einfacher Weise zugeführt und übertragen.By The mutually arranged electrode rings according to claim 5 the transmitting or receiving signals supplied in a simple manner and transmitted.
Durch die Weiterbildung nach Anspruch 6 ist es möglich, alle externen Anschlüsse auf der Festscheibe zusammenzufassen.By The development according to claim 6, it is possible to all external connections to summarize the solid disk.
Durch das Schirmgehäuse nach Anspruch 7 schützt die Sensor- und Übertragerelemente vor externen elektromagnetischen Störeinflüssen.By the shield housing Protects according to claim 7 the sensor and transformer elements against external electromagnetic interference.
Durch die Elektroden nach den Ansprüchen 8 und 9 werden sämtliche Messwerte hochauflösend und zuverlässig ermittelt Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert. Es zeigen:By the electrodes according to claims 8 and 9 are all Measurements high-resolution and reliable determines an embodiment The invention is illustrated in the drawing and will be described below explained in more detail. It demonstrate:
Nach
Eine
Sensoreinrichtung zur Ermittlung der Drehstellung und des Drehmoments
der Lenkwelle weist im Bereich des Endstücks
Eine
der beiden inneren Scheiben ist am freien Ende der Lenksäule befestigt
und als Markierscheibe
Nach
Die
Die
Drehelektroden bestehen aus ringartigen, paarweise einander zugeordneten
mittleren Grobdrehelektroden
Die
Grobdrehelektroden
Nach
Die
Die
- 11
- Lenkwellesteering shaft
- 22
- Endstücktail
- 33
- BuchseRifle
- 44
- Lenksäulesteering column
- 55
- Lenkradsteering wheel
- 66
- Sensoreinheitsensor unit
- 77
- Gehäusecasing
- 88th
- Leitungmanagement
- 99
- Signalgeneratorsignal generator
- 1010
- Festscheibehard disk
- 1111
- SignalaufbereiterSignal Conditioner
- 1212
- Mikrokontrollermicrocontroller
- 1313
- Geberleitungencoder cable
- 1414
- ZentralsteuerungCentral control
- 1515
- Elektrodenringelectrode ring
- 1616
- GrobdrehelektrodeCoarse rotary electrode
- 1717
- Drehelektroderotary electrode
- 1818
- Drehmarkierungrotary labeling
- 1919
- TorsionsmarkierungTorsionsmarkierung
- 2020
- Markierscheibemarking disk
- 2121
- Elektrodensegmentelectrode segment
- 2222
- Elektrodenfeldelectrode array
- 2323
- Verbindungsleitungconnecting line
- 2424
- Trennfugeparting line
- 2525
- Elektrodenringelectrode ring
- 2626
- GrobdrehelektrodeCoarse rotary electrode
- 2727
- Drehelektroderotary electrode
- 2828
- Elektrodensegmentelectrode segment
- 2929
- Elektrodenfeldelectrode array
- 3030
- Sensorscheibesensor disk
- 3131
- Trennfugeparting line
- 3232
- Ringelektrodering electrode
- 3333
- Nockencam
- 3434
- ZahnkranzsegmentToothed ring segment
- 3535
- Sensorfeldsensor field
- 3636
- Teilringpartial ring
- 3737
- Elektrodenflächeelectrode area
- 4242
- Ringelektrodering electrode
- 4040
- ÜbertragerscheibeÜbertragerscheibe
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005061666A DE102005061666A1 (en) | 2005-12-22 | 2005-12-22 | Sensor device for measuring torque and rotation angle of steering shaft of motor vehicle, has rotary units and torsion markers that are formed as torsion electrodes, and sensor plate with ring electrodes coupled with transmission electrodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005061666A DE102005061666A1 (en) | 2005-12-22 | 2005-12-22 | Sensor device for measuring torque and rotation angle of steering shaft of motor vehicle, has rotary units and torsion markers that are formed as torsion electrodes, and sensor plate with ring electrodes coupled with transmission electrodes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005061666A1 true DE102005061666A1 (en) | 2007-06-28 |
Family
ID=38108785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005061666A Withdrawn DE102005061666A1 (en) | 2005-12-22 | 2005-12-22 | Sensor device for measuring torque and rotation angle of steering shaft of motor vehicle, has rotary units and torsion markers that are formed as torsion electrodes, and sensor plate with ring electrodes coupled with transmission electrodes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005061666A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015211730A1 (en) * | 2015-06-24 | 2017-01-12 | Volkswagen Aktiengesellschaft | Torque unit with elastic coupling element and method for mounting a torque unit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5172039A (en) * | 1991-09-16 | 1992-12-15 | Staodyn, Inc. | Device utilizing capacitive coupling to provide an output indicative of angular relationship |
DE10254751A1 (en) * | 2002-02-21 | 2003-09-04 | Continental Teves Ag & Co Ohg | Device for measuring the angle, angular velocity and moment of a motor vehicle steering rod comprises steering angle sensor and moment sensor mounted in a common housing on the steering rod to simplify assembly |
-
2005
- 2005-12-22 DE DE102005061666A patent/DE102005061666A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5172039A (en) * | 1991-09-16 | 1992-12-15 | Staodyn, Inc. | Device utilizing capacitive coupling to provide an output indicative of angular relationship |
DE10254751A1 (en) * | 2002-02-21 | 2003-09-04 | Continental Teves Ag & Co Ohg | Device for measuring the angle, angular velocity and moment of a motor vehicle steering rod comprises steering angle sensor and moment sensor mounted in a common housing on the steering rod to simplify assembly |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015211730A1 (en) * | 2015-06-24 | 2017-01-12 | Volkswagen Aktiengesellschaft | Torque unit with elastic coupling element and method for mounting a torque unit |
DE102015211730B4 (en) * | 2015-06-24 | 2019-10-31 | Volkswagen Aktiengesellschaft | Torque unit with elastic coupling element and method for mounting a torque unit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal | ||
8165 | Publication of following application cancelled |