US 2025/0164288 A1Published application

Combined position and sensor system

AssigneeSensitivus ApS

InventorRolf Østergaard

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Abstract

The present disclosure relates to a combined position and sensor system comprising a stator part and rotor part, where the stator part has an AC voltage source and the rotor part is powered by inductive coupling between the stator and rotor part, and where the rotor part comprises sensor component(s), and sensor data is transmitted from the rotor part to the stator part via inductive coupling. Furthermore, a signal, which is dependent on the relative position of the stator and rotor part, is based on inductive coupling between elements on the stator and rotor. Additionally, the disclosure relates to an electric vehicle comprising the combined position and sensor system and to a method of regulating power provided by a motor control system for an electric vehicle comprising an electric motor, where the electric vehicle further comprises a combined position and sensor system.

Claims21

Dependent claims

A combined position and sensor system comprising:

a stator part comprising a voltage source configured to generate an AC carrier signal, a stator inductor, and one or more receiver inductors,
a rotor part comprising a rotor inductor, one or more sensor components configured to generate sensor data, and one or more targets,
the rotor part and the stator part being rotatable in relation to each other in a contactless manner and configured such that the stator inductor and the rotor inductor are inductively coupled, whereby an AC current is induced in the rotor inductor, and the rotor part being configured to generate a DC current from the induced AC current,
the stator part and the rotor part being further configured to transmit the sensor data from rotor part to stator part via the inductive coupling between the stator inductor and the rotor inductor,
the one or more receiver inductors being coupled to the stator inductor through the one or more targets on the rotor part, and
the stator part being further configured to create a position-dependent signal based on the inductive coupling between the one or more receiver inductors and the stator inductor, the position-dependent signal having an amplitude, which is depending on the relative position of the one or more targets of the rotor.

3 more elements

A method of regulating power provided by a motor control system for an electric vehicle comprising an electric motor, the electric vehicle further comprising a combined position and sensor system, a rotor part of the combined position and sensor system being coupled to a rotatable shaft, and a stator part being coupled to a stationary part,

the combined position and sensor system being further configured to measure a torque applied to the rotatable shaft or to an element coupled to the rotatable shaft, and to provide a position-dependent signal indicative of the angular position of the rotor part relative to the stator part, the method comprising:
receiving, by a processing unit, the position-dependent signal and a signal indicative of the measured torque,
calculating, by a processing unit, a measure of adjusted torque, the calculation comprising adjusting the measured torque as a function of the position-dependent signal, and
controlling the power pushed to the electric motor based at least in part on the measure of adjusted torque.

1 more element

Dependencies are inferred from the claim text.