DE102007011675A1 - Steering angle and torque sensor in a power steering system of a motor vehicle - Google Patents
Steering angle and torque sensor in a power steering system of a motor vehicle Download PDFInfo
- Publication number
- DE102007011675A1 DE102007011675A1 DE102007011675A DE102007011675A DE102007011675A1 DE 102007011675 A1 DE102007011675 A1 DE 102007011675A1 DE 102007011675 A DE102007011675 A DE 102007011675A DE 102007011675 A DE102007011675 A DE 102007011675A DE 102007011675 A1 DE102007011675 A1 DE 102007011675A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor arrangement
- arrangement according
- ring
- field
- sensor
- 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.)
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Links
Classifications
-
- 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
- G01D5/142—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 using Hall-effect devices
- G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- 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
-
- 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
-
- 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
- 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
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/80—Manufacturing details of magnetic targets for magnetic encoders
Abstract
Zur Bestimmung eines Lenkwinkels und/oder eines Drehmoments einer tordierbaren Welle im Lenkstrang einer Hilfskraftlenkung wird eine Sensoranordnung vorgeschlagen, die dadurch gekennzeichnet ist, dass - wenigstens zwei, um 90° zueinander versetzte Hall-Sensoren (5a, 5b) einem gemeinsamen und bezüglich einer Drehachse radial angeordneten magnetischem Feldgeberring (1) zugeordnet sind, - der Feldgeberring (1) ein aus einem magnetischen Nordpol (2) und einem magnetischen Südpol (3) bestehendes Polpaar aufweist, - der Feldgeberring (1) einen mittleren Radius r aufweist, - jeder der beiden Pole (2, 3) eine halbe sinusförmige Magnetisierung entsprechend einer Wellenlänge pir aufweist, und wobei - der Feldgeberring (1) aus einem magnetisierbaren Material besteht, dessen Magnetisierung künstlich eingebracht ist.For determining a steering angle and / or a torque of a twistable shaft in the power train of a power steering system, a sensor arrangement is proposed, which is characterized in that - at least two mutually offset by 90 ° Hall sensors (5a, 5b) a common and with respect to a rotation axis are assigned radially arranged magnetic field generator ring (1), - the field sensor ring (1) comprises a magnetic north pole (2) and a magnetic south pole (3) existing pole pair, - the field generator ring (1) has a mean radius r, - each of two poles (2, 3) has a half sinusoidal magnetization corresponding to a wavelength pir, and wherein - the field generator ring (1) consists of a magnetizable material whose magnetization is artificially introduced.
Description
Die Erfindung betrifft eine Sensoranordnung zur Ermittlung eines absoluten Lenkwinkels in einer Hilfskraftlenkung eines Kraftfahrzeugs.The The invention relates to a sensor arrangement for determining an absolute Steering angle in a power steering system of a motor vehicle.
Aus dem Stand der Technik sind verschiedene Sensoranordnungen zur Ermittlung eines Lenkwinkels oder eines Drehmoments in einer Lenksäule einer Hilfskraftlenkung bekannt.Out In the prior art, various sensor arrangements for determining a steering angle or torque in a steering column of a Power steering known.
Beispielhaft
sei an dieser Stelle auf die
Die
Die
Die
Die
In
der
Aufgabe der Erfindung ist es, eine Sensoranordnung zur Bestimmung eines Lenkwinkels innerhalb eines Winkelbereichs oder eines Drehmoments in einem Lenkstrang einer Hilfskraftlenkung vorzuschlagen, die einen einfachen Aufbau aufweist und mit einem einfachen Auswerteaufwand zu betreiben ist, wobei über einen Winkelbereich von 360° eine eindeutige Lenkwinkelinformation mit einer hinreichend genauen Auflösung erreichbar ist.task The invention is a sensor arrangement for determining a Steering angle within an angular range or torque in to propose a steering column of a power steering system, the one has a simple structure and with a simple evaluation to operate, being over an angular range of 360 ° a unique Steering angle information with a sufficiently accurate resolution achievable is.
Diese Aufgabe wird mit den kennzeichnenden Merkmalen des Hauptanspruchs gelöst. Weitere Ausführungsvarianten sind in den abhängigen Ansprüchen angegeben.These Task is with the characterizing features of the main claim solved. Further variants are in the dependent claims specified.
Auf
einer Hohlwelle
Mittels des aus dem Stand der Technik bekannten sin/cos – Auswerteverfahrens, dem so genannten Quadratur-Verfahren, kann aus den analogen Signalen der Hall-Sensoren ein zugehöriger Winkelwert ermittelt werden.through of the known from the prior art sin / cos - evaluation, the so mentioned quadrature method, can from the analog signals of the Hall sensors on associated angle value be determined.
In
der
Die sinusförmige Magnetisierung kann somit stärker in das Material eingeprägt werden, was sich sehr vorteilhaft auf die Genauigkeit und die Detektierbarkeit durch die Hall-Sensoren auswirkt.The sinusoidal Magnetization can thus be stronger imprinted in the material which is very beneficial to accuracy and detectability through the Hall sensors.
Optimal bezüglich einer späteren Signalauswertung ist es, wenn die Magnetisierung sinusförmig und bezüglich der Hall-Sensoren optimierten, d. h. geringfügig modifizierten Feldstärkenverlaufs aufweist. Auch unter diesem Aspekt erweist sich die Einbringung von Seltenen-Erden Materialien als vorteilhaft: Ein korrigierter, von einer idealen Sinusform geringfügig abweichender Feldstärkenverlauf kann durch die erhöhte Magnetisierung besser abgefühlt werden.Optimal in terms of a later one Signal evaluation is when the magnetization is sinusoidal and in terms of the Hall sensors optimized, d. H. slightly modified field strength course having. Also under this aspect proves the contribution of rare earth materials as beneficial: a corrected, slightly different field strength profile from an ideal sinusoidal shape can through the increased Magnetization can be better sensed.
Durch die erfindungsgemäßen Maßnahmen können Genauigkeitswerte erreicht, die bisher nur mit aufwändigen Nonius-Verfahren erreicht werden konnten. Versuche haben gezeigt, dass es ausreichend ist, lediglich ein Poolpaar, bestehend aus einem magnetischen Nord- und einem Süd-Pol, mittels der Magnetisierung auszubilden um eine Genauigkeit von < 3° zu erreichen.By The measures according to the invention can provide accuracy values achieved, which has so far only been achieved with elaborate vernier methods could become. Experiments have shown that it is sufficient just a pair of pools, consisting of a magnetic north and a south pole, by means of the magnetization to achieve an accuracy of <3 °.
Die Bestimmung eines eindeutigen Lenkwinkes über den Lenkwinkelbereich von 360° hinweg kann ermöglicht werden, indem weitere Informationen herangezogen werden:The Determination of a clear steering angle over the steering angle range of 360 ° away allows by using more information:
So ist es vorgesehen, positionsabhängige Markierungen/Indexmarken am Getriebe anzubringen und zu Detektieren. Ferner ist vorgesehen, dass eine Rotorlageinformation eines Elektromotors der Hilfskraftlenkung hierzu verwendet wird. Diese zusätzlichen Informationen werden während des Betriebs oder auch in einem „Sleep-Mode" detektiert und in einem nicht-flüchtigen Speicher vorgehalten.So it is intended, position-dependent markers / index marks attach to the gearbox and detect. It is also envisaged that a rotor position information of an electric motor of the power steering system is used for this purpose. This extra Information will be during of the operation or even in a "sleep mode" detected and in a non-volatile one Memory held.
In
der gezeigten Anordnung sind wenigstens zwei Feldgeberringe
Die
Hall-Sensoren sind auch in dieser Ausführungsvariante auf einer flexiblen
Folie aufgeklebt und mittels dieser kontaktiert, dies ist jedoch
in der
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007011675A DE102007011675A1 (en) | 2006-12-22 | 2007-03-09 | Steering angle and torque sensor in a power steering system of a motor vehicle |
PCT/EP2007/064221 WO2008077861A1 (en) | 2006-12-22 | 2007-12-19 | Steering angle and torque sensor in a power steering system of a motor vehicle |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006061282 | 2006-12-22 | ||
DE102006061282.5 | 2006-12-22 | ||
DE102007011675A DE102007011675A1 (en) | 2006-12-22 | 2007-03-09 | Steering angle and torque sensor in a power steering system of a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007011675A1 true DE102007011675A1 (en) | 2008-06-26 |
Family
ID=39259490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007011675A Withdrawn DE102007011675A1 (en) | 2006-12-22 | 2007-03-09 | Steering angle and torque sensor in a power steering system of a motor vehicle |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102007011675A1 (en) |
WO (1) | WO2008077861A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009029406A1 (en) | 2009-09-14 | 2011-03-17 | Zf Lenksysteme Gmbh | Method for temperature monitoring in controller for electrical power steering, involves producing a sensor signal for determination of steering angle or torque in steering rod of power steering |
DE102009047633A1 (en) | 2009-12-08 | 2011-06-09 | Zf Lenksysteme Gmbh | Method and apparatus for interference field compensation of sensor signals in an electric power steering system |
AT510377A1 (en) * | 2010-09-14 | 2012-03-15 | Zentr Mikroelekt Dresden Gmbh | METHOD AND EMBODIMENTS FOR THE ABSOLUTE POSITION DETERMINATION BY MEANS OF TWO HALL SENSORS |
DE102013107504A1 (en) * | 2013-07-16 | 2015-01-22 | Zf Lenksysteme Gmbh | Torque sensor device |
DE102016204729A1 (en) * | 2016-03-22 | 2017-09-28 | TE Connectivity Sensors Germany GmbH | Permanent magnetic scale |
US20170340103A1 (en) * | 2014-10-24 | 2017-11-30 | Suspa Gmbh | Device for adjusting the height of a first part relative to a second part, a retrofit kit for such a device and height-adjustable system comprising a plurality of such devices |
FR3069319A1 (en) * | 2017-07-18 | 2019-01-25 | Ntn-Snr Roulements | SYSTEM FOR DETERMINING THE POSITION OF AN ORGAN |
DE102016015850B3 (en) | 2016-03-22 | 2022-12-01 | TE Connectivity Sensors Germany GmbH | Permanent magnetic scale |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012203158A1 (en) | 2012-02-29 | 2013-08-29 | Zentrum Mikroelektronik Dresden Ag | Device for sensor system for contactless detection of absolute position of rotatable element, has magneto-sensitive sensors that detect axial component of magnetic field, where absolute position is recognized over certain angular range |
CN104697434A (en) * | 2013-12-10 | 2015-06-10 | 中国航空工业第六一八研究所 | Rotor zero-adjustment structure of double-redundancy angular displacement sensor and adjustment method of rotor zero-adjustment structure |
DE102018123885A1 (en) * | 2018-09-27 | 2020-04-02 | Thyssenkrupp Ag | Angle sensor with two-pole magnet for motor vehicle steering |
EP4016008A1 (en) | 2020-12-17 | 2022-06-22 | Renesas Electronics America Inc. | Position sensor with improved magnetic stray field immunity |
Citations (10)
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DE2165691A1 (en) * | 1971-12-30 | 1973-07-12 | Siemens Ag | CONTACTLESS ANGLE POSITION ENCODER, IN PARTICULAR FOR THREAD TENSION CONTROL IN WINDERS DRIVES |
DE19818799C2 (en) * | 1997-12-20 | 1999-12-23 | Daimler Chrysler Ag | Method and device for measuring angles |
EP1092956A1 (en) * | 1999-09-29 | 2001-04-18 | Tyco Electronics Logistics AG | Electromagnetic sensor for angles of rotation |
DE10060287A1 (en) * | 1999-12-06 | 2001-06-07 | Bosch Gmbh Robert | Determination of the angle, angular velocity, and or torque of a rotating body, especially a motor vehicle steering wheel shaft by use of optical code traces on the rotating body and optical sensors for reading a code offset |
DE10036281A1 (en) * | 2000-07-26 | 2002-02-07 | Bosch Gmbh Robert | Determination of a rotating axle angular position by use of two signal wheels with signal tracks comprised of magnetic poles the signal tracks of which are detected by sensors linked to an analysis device for high resolution |
DE10041090A1 (en) * | 2000-08-22 | 2002-03-07 | Bosch Gmbh Robert | Method for self-calibration of a torsion angle measured by a torque and protractor |
DE10210372A1 (en) * | 2002-03-08 | 2003-09-25 | Siemens Ag | Rotational angle sensor, comprises a pole wheel with coarse and fine magnetic traces and Hall sensor magnetic field detectors, with the coarse trace used for quick position determination and the fine trace used for high resolution |
DE10221340A1 (en) * | 2002-05-08 | 2003-11-20 | Bosch Gmbh Robert | Rotation angle measurement arrangement has a magnetic field generating element that generates a field with axial and tangential components relative to a shaft axis, so that field detection sensitivity is improved |
DE10110785C2 (en) * | 2001-03-06 | 2003-11-27 | Valeo Schalter & Sensoren Gmbh | Steering angle sensor |
DE102004026476A1 (en) * | 2004-05-27 | 2005-12-22 | Elgo-Electric Gmbh | Device for rotary angle measurement |
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DE4440214C2 (en) * | 1994-11-10 | 1997-08-14 | Itt Ind Gmbh Deutsche | Encoder with Hall sensors |
GB9902438D0 (en) * | 1999-02-05 | 1999-03-24 | Trw Lucas Varity Electric | Improvements relating to electric power assisted steering assemblies |
EP1083406A3 (en) * | 1999-09-09 | 2002-03-20 | Delphi Technologies, Inc. | Rotary position sensor |
ITTO20030024A1 (en) * | 2003-01-20 | 2004-07-21 | Rft Spa | PHONE WHEEL CONTROL DEVICE |
US7537388B2 (en) * | 2003-10-22 | 2009-05-26 | Ntn Corporation | Bearing assembly with built-in absolute encoder |
DE102004054921B4 (en) * | 2004-11-09 | 2022-07-14 | Volkswagen Ag | Device and method for steering assistance for vehicles with electromechanical steering |
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2007
- 2007-03-09 DE DE102007011675A patent/DE102007011675A1/en not_active Withdrawn
- 2007-12-19 WO PCT/EP2007/064221 patent/WO2008077861A1/en active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2165691A1 (en) * | 1971-12-30 | 1973-07-12 | Siemens Ag | CONTACTLESS ANGLE POSITION ENCODER, IN PARTICULAR FOR THREAD TENSION CONTROL IN WINDERS DRIVES |
DE19818799C2 (en) * | 1997-12-20 | 1999-12-23 | Daimler Chrysler Ag | Method and device for measuring angles |
EP1092956A1 (en) * | 1999-09-29 | 2001-04-18 | Tyco Electronics Logistics AG | Electromagnetic sensor for angles of rotation |
DE10060287A1 (en) * | 1999-12-06 | 2001-06-07 | Bosch Gmbh Robert | Determination of the angle, angular velocity, and or torque of a rotating body, especially a motor vehicle steering wheel shaft by use of optical code traces on the rotating body and optical sensors for reading a code offset |
DE10036281A1 (en) * | 2000-07-26 | 2002-02-07 | Bosch Gmbh Robert | Determination of a rotating axle angular position by use of two signal wheels with signal tracks comprised of magnetic poles the signal tracks of which are detected by sensors linked to an analysis device for high resolution |
DE10041090A1 (en) * | 2000-08-22 | 2002-03-07 | Bosch Gmbh Robert | Method for self-calibration of a torsion angle measured by a torque and protractor |
DE10110785C2 (en) * | 2001-03-06 | 2003-11-27 | Valeo Schalter & Sensoren Gmbh | Steering angle sensor |
DE10210372A1 (en) * | 2002-03-08 | 2003-09-25 | Siemens Ag | Rotational angle sensor, comprises a pole wheel with coarse and fine magnetic traces and Hall sensor magnetic field detectors, with the coarse trace used for quick position determination and the fine trace used for high resolution |
DE10221340A1 (en) * | 2002-05-08 | 2003-11-20 | Bosch Gmbh Robert | Rotation angle measurement arrangement has a magnetic field generating element that generates a field with axial and tangential components relative to a shaft axis, so that field detection sensitivity is improved |
DE102004026476A1 (en) * | 2004-05-27 | 2005-12-22 | Elgo-Electric Gmbh | Device for rotary angle measurement |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009029406A1 (en) | 2009-09-14 | 2011-03-17 | Zf Lenksysteme Gmbh | Method for temperature monitoring in controller for electrical power steering, involves producing a sensor signal for determination of steering angle or torque in steering rod of power steering |
DE102009047633A1 (en) | 2009-12-08 | 2011-06-09 | Zf Lenksysteme Gmbh | Method and apparatus for interference field compensation of sensor signals in an electric power steering system |
WO2011069904A2 (en) | 2009-12-08 | 2011-06-16 | Zf Lenksysteme Gmbh | Method and device for compensating for interference fields of sensor signals in an electrical power steering system |
WO2011069904A3 (en) * | 2009-12-08 | 2011-10-13 | Zf Lenksysteme Gmbh | Method and device for compensating for interference fields of sensor signals in an electrical power steering system |
DE102009047633B4 (en) * | 2009-12-08 | 2020-10-08 | Robert Bosch Gmbh | Method and devices for interference field compensation of sensor signals in an electric power steering system |
US10203223B2 (en) | 2010-09-14 | 2019-02-12 | Idt Europe Gmbh | Device for determining the absolute position of a movable body |
AT510377A1 (en) * | 2010-09-14 | 2012-03-15 | Zentr Mikroelekt Dresden Gmbh | METHOD AND EMBODIMENTS FOR THE ABSOLUTE POSITION DETERMINATION BY MEANS OF TWO HALL SENSORS |
AT510377B1 (en) * | 2010-09-14 | 2014-06-15 | Zentr Mikroelekt Dresden Gmbh | METHOD AND EMBODIMENTS FOR THE ABSOLUTE POSITION DETERMINATION BY MEANS OF TWO HALL SENSORS |
US9551562B2 (en) | 2010-09-14 | 2017-01-24 | Idt Europe Gmbh | Method and device for determining the absolute position of a movable body |
DE102013107504A1 (en) * | 2013-07-16 | 2015-01-22 | Zf Lenksysteme Gmbh | Torque sensor device |
US20170340103A1 (en) * | 2014-10-24 | 2017-11-30 | Suspa Gmbh | Device for adjusting the height of a first part relative to a second part, a retrofit kit for such a device and height-adjustable system comprising a plurality of such devices |
DE102016204729B4 (en) | 2016-03-22 | 2018-10-31 | TE Connectivity Sensors Germany GmbH | Permanent magnetic scale |
DE102016204729A1 (en) * | 2016-03-22 | 2017-09-28 | TE Connectivity Sensors Germany GmbH | Permanent magnetic scale |
DE102016015850B3 (en) | 2016-03-22 | 2022-12-01 | TE Connectivity Sensors Germany GmbH | Permanent magnetic scale |
FR3069319A1 (en) * | 2017-07-18 | 2019-01-25 | Ntn-Snr Roulements | SYSTEM FOR DETERMINING THE POSITION OF AN ORGAN |
Also Published As
Publication number | Publication date |
---|---|
WO2008077861A1 (en) | 2008-07-03 |
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Effective date: 20111001 |