Magnetoelastic Torque Sensor
First Claim
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1. A magnetoelastic torque sensor, comprising:
- a shaft that is magnetized in a first axial section in a first circumferential direction, and to which a torque to be measured can be applied;
a first magnetic field sensor disposed outside of the shaft, the first magnetic field sensor configured to record a magnetic field which is generated by the first section of the shaft and which is dependent on the applied torque;
wherein the first magnetic field sensor comprises a first 3D-Anisotropic MagnetoResistance (3D-AMR) sensor.
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Abstract
The magnetoelastic torque sensor includes a shaft that is magnetized in a first axial section in a first circumferential direction and to which a torque to be measured can be applied; a first magnetic field sensor outside of the shaft for recording a magnetic field, which is generated by the first section of the shaft and independent of the applied torque. The first magnetic field sensor comprises a first 3D Anisotropic MagnetoResistance (3D-AMR) sensor.
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Citations
15 Claims
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1. A magnetoelastic torque sensor, comprising:
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a shaft that is magnetized in a first axial section in a first circumferential direction, and to which a torque to be measured can be applied; a first magnetic field sensor disposed outside of the shaft, the first magnetic field sensor configured to record a magnetic field which is generated by the first section of the shaft and which is dependent on the applied torque; wherein the first magnetic field sensor comprises a first 3D-Anisotropic MagnetoResistance (3D-AMR) sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device, comprising:
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a magnetoelastic torque sensor, the magnetoelastic torque sensor comprising; a shaft that is magnetized in a first axial section in a first circumferential direction, and to which a torque to be measured can be applied; a first magnetic field sensor disposed outside of the shaft, the first magnetic field sensor configured to record a magnetic field which is generated by the first section of the shaft and which is dependent on the applied torque; wherein the first magnetic field sensor comprises a first 3D-Anisotropic MagnetoResistance (3D-AMR) sensor. wherein the device is a bottom bracket of a bicycle or an e-bike, a motor, a motor test facility, a test facility for high-speed shafts with over 10,000 rpm, a gearbox, a robot, an extruder, a straightening machine, a plane, an actuator, a cardan shaft, or a drive shaft.
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12. A method for determining a torque applied to a shaft, wherein the shaft is magnetized in a first axial section in a first circumferential direction and a first 3D-Anisotropic MagnetoResistance (3D-AMR) sensor is provided, the method comprising:
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applying a torque to the shaft; recording, via the first 3D-AMR sensor, a magnetic field generated by the first section of the shaft; determining the applied torque based on the magnetic field recorded by the first 3D-AMR sensor. - View Dependent Claims (13, 14, 15)
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Specification