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US 12,571,695 B2Granted
Torque and angle of rotation detection system
AssigneeKistler Holding AG
InventorsStanko Tepsic, Alexander Roshau, Tobias Waibel
Life of this patent
Estimating the term…
Abstract
A torque and angle of rotation detection system is rotatable about an axis of rotation and includes a stator unit separated from a rotor unit by an air gap disposed radially with respect to the axis of rotation. The rotor unit includes strain gauges, dipole magnets and a secondary coil with ferrite elements. The stator unit includes a magnetic field sensor and a primary coil wherein a primary electrical voltage in the primary coil generates a secondary electrical voltage in the secondary coil.
Claims16
A torque and angle of rotation detection system, comprising:
- a rotor unit that is able to rotate about an axis of rotation;
- a stator unit arranged in a stationary manner and separated from the rotor unit by an air gap arranged radially with respect to the axis of rotation;
- wherein the rotor unit includes a plurality of strain gauges configured and disposed to detect a torque acting onto the rotor unit;
- wherein the rotor unit includes a secondary coil and a plurality of dipole magnets and each dipole magnet in the plurality of dipole magnets is arranged spaced apart from each other dipole magnet in the plurality of dipole magnets;
- wherein the stator unit includes a magnetic field sensor that is configured and disposed to measure magnetic fields of the dipole magnets during rotation of the rotor unit;
- wherein the stator unit includes a primary coil configured and disposed with respect to the secondary coil so that a primary electrical voltage in the primary coil generates a secondary electrical voltage in the secondary coil;
- wherein each of the dipole magnets in the plurality of dipole magnets has a remanence of at least 1,000 mT;
- and
- wherein the secondary coil includes a plurality of ferrite elements.
6 more elements
A torque and angle of rotation detection system, comprising:
- a rotor unit that is able to rotate about an axis of rotation;
- a stator unit arranged in a stationary manner and separated from the rotor unit by an air gap arranged radially with respect to the axis of rotation;
- wherein the rotor unit includes a plurality of strain gauges configured and disposed to detect a torque acting onto the rotor unit;
- wherein the rotor unit includes a secondary coil and a plurality of dipole magnets and each dipole magnet in the plurality of dipole magnets is arranged spaced apart from each other dipole magnet in the plurality of dipole magnets;
- wherein the stator unit includes a magnetic field sensor that is configured and disposed to measure magnetic fields of the dipole magnets during rotation of the rotor unit;
- wherein the stator unit includes a primary coil configured and disposed with respect to the secondary coil so that a primary electrical voltage in the primary coil generates a secondary electrical voltage in the secondary coil;
- wherein each of the dipole magnets in the plurality of dipole magnets has a remanence of at least 1,000 m;
- wherein the secondary coil includes a plurality of ferrite elements;
- and
- wherein the rotor unit includes a coil winding that is attached radially to the plurality of ferrite elements.
7 more elements
A torque and angle of rotation detection system, comprising:
- a rotor unit that is able to rotate about an axis of rotation;
- a stator unit arranged in a stationary manner and separated from the rotor unit by an air gap arranged radially with respect to the axis of rotation;
- wherein the rotor unit includes a plurality of strain gauges configured and disposed to detect a torque acting onto the rotor unit;
- wherein the rotor unit includes a secondary coil and a plurality of dipole magnets and each dipole magnet in the plurality of dipole magnets is arranged spaced apart from each other dipole magnet in the plurality of dipole magnets;
- wherein the rotor unit includes a rotor body in which a groove is radially defined;
- wherein each of the dipole magnets in the plurality of dipole magnets is secured within the groove;
- wherein the stator unit includes a magnetic field sensor that is configured and disposed to measure magnetic fields of the dipole magnets during rotation of the rotor unit;
- wherein the stator unit includes a primary coil configured and disposed with respect to the secondary coil so that a primary electrical voltage in the primary coil generates a secondary electrical voltage in the secondary coil;
- wherein each of the dipole magnets in the plurality of dipole magnets has a remanence of at least 1,000 m;
- and
- wherein the secondary coil includes a plurality of ferrite elements.
8 more elements
Dependencies are inferred from the claim text.