Drive unit for an adjustment system of a motor vehicle, and method for operating a drive unit
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United States of America Patent
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May 25, 2021
Grant Date -
Oct 17, 2019
app pub date -
Apr 10, 2019
filing date -
Apr 12, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A drive unit for an adjustment system for a motor vehicle has an adjustable element moved by an electric motor. The dive motor is operated electromagnetically. A magnetic field sensor is arranged on a pole pot or a housing of the drive motor to provide an electrical sensor signal dependent on a magnetic field. A control unit is configured to detect the magnetic field. The magnetic field varies on rotation of a rotor of the drive motor, so that a relative position change of the adjustable element can be derived from the electrical sensor signal.
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