ENCODER WHEEL ASSEMBLY AND METHOD FOR ASCERTAINING AN ABSOLUTE ANGULAR POSITION AND A ROTATIONAL DIRECTION
The invention relates to an encoder wheel assembly ( ) for ascertaining an absolute angular position ( ) and a rotational direction ( ) of a rotor ( ), comprising the following: a first encoder wheel ( ) which is rotationally fixed to the rotor ( ) said first encoder wheel ( ) having a number n of t...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
05.12.2019
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Subjects | |
Online Access | Get full text |
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Abstract | The invention relates to an encoder wheel assembly ( ) for ascertaining an absolute angular position ( ) and a rotational direction ( ) of a rotor ( ), comprising the following: a first encoder wheel ( ) which is rotationally fixed to the rotor ( ) said first encoder wheel ( ) having a number n of teeth ( ) which are arranged in a uniformly spaced manner along the circumference of the encoder wheel; a second encoder wheel ( ) which is rotationally fixed to the first encoder wheel ( ) said second encoder wheel ( ) having the same number n of teeth ( ) as the first encoder wheel ( ) along the circumference of the encoder wheel, wherein the teeth ( ) of the second encoder wheel ( ) have an asymmetrical angular offset relative to the teeth ( ) of the first encoder wheel ( ) a first sensor ( ) which is designed to scan the first encoder wheel ( ); a second sensor ( ) which is designed to scan the second encoder wheel ( ); and a controller ( ) which is connected to the first sensor ( ) and the second sensor ( ) in a communicative manner, said controller being designed to ascertain the absolute angular position ( ) and the rotational direction ( ) on the basis of a binary signal ( ) which is derived from a first signal ( ) of the first sensor ( ) and a second signal ( ) of the second sensor ( ). |
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AbstractList | The invention relates to an encoder wheel assembly ( ) for ascertaining an absolute angular position ( ) and a rotational direction ( ) of a rotor ( ), comprising the following: a first encoder wheel ( ) which is rotationally fixed to the rotor ( ) said first encoder wheel ( ) having a number n of teeth ( ) which are arranged in a uniformly spaced manner along the circumference of the encoder wheel; a second encoder wheel ( ) which is rotationally fixed to the first encoder wheel ( ) said second encoder wheel ( ) having the same number n of teeth ( ) as the first encoder wheel ( ) along the circumference of the encoder wheel, wherein the teeth ( ) of the second encoder wheel ( ) have an asymmetrical angular offset relative to the teeth ( ) of the first encoder wheel ( ) a first sensor ( ) which is designed to scan the first encoder wheel ( ); a second sensor ( ) which is designed to scan the second encoder wheel ( ); and a controller ( ) which is connected to the first sensor ( ) and the second sensor ( ) in a communicative manner, said controller being designed to ascertain the absolute angular position ( ) and the rotational direction ( ) on the basis of a binary signal ( ) which is derived from a first signal ( ) of the first sensor ( ) and a second signal ( ) of the second sensor ( ). |
Author | Eckert, Bernd Letzgus, Matthias Maur, Marcel Hanel, Stephan Merkel, Tino Utermoehlen, Fabian |
Author_xml | – fullname: Hanel, Stephan – fullname: Merkel, Tino – fullname: Utermoehlen, Fabian – fullname: Letzgus, Matthias – fullname: Eckert, Bernd – fullname: Maur, Marcel |
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RelatedCompanies | Robert Bosch GmbH |
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Snippet | The invention relates to an encoder wheel assembly ( ) for ascertaining an absolute angular position ( ) and a rotational direction ( ) of a rotor ( ),... |
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SubjectTerms | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING |
Title | ENCODER WHEEL ASSEMBLY AND METHOD FOR ASCERTAINING AN ABSOLUTE ANGULAR POSITION AND A ROTATIONAL DIRECTION |
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