METHOD AND SYSTEM FOR SENSING COMPONENT POSITION IN AN ELECTRIC DRIVE UNIT
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United States of America Patent
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Issued Date -
Apr 10, 2025
app pub date -
Oct 4, 2023
filing date -
Oct 4, 2023
priority date (Note) -
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Abstract
An electric drive unit includes a housing and a rotor rotatably supported in the housing. The rotor includes a rotor shaft defining a rotor axis and a plurality of rotor laminations fixedly mounted to the shaft. The plurality of rotor laminations support a plurality of magnetic poles, and a hydraulic unit connected to the plurality of rotor laminations. The hydraulic unit has a magnetic shunt that is selectively shiftable relative to the plurality of magnetic poles. A position sensing system is operable to detect a rotational speed of the rotor and a position of the magnetic shunt relative to the plurality of magnetic poles. The position sensing system includes a rotor shaft position trigger coupled for rotation with the rotor shaft, and a magnetic shunt position trigger supported by the hydraulic unit.
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