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AssigneeAnalog Devices International Unlimited Company
InventorsJochen Schmitt, Jan Kubik, Gavin Patrick Cosgrave
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The present disclosure provides magnetic sensor system that includes a magnetic sensing device comprising a magnetic multi-turn sensor, and a method of initializing the magnetic multi-turn sensor into a known state with a defined domain wall configuration. A strong magnetic field is first applied to fill the MT sensor with domain walls. A current is then applied to a domain wall stopping structure arranged over at least one portion of the MT sensor, and the working magnetic field (i.e., the magnetic field generated by a magnet mounted on the mechanical system) is rotated until the desired domain wall configuration is achieved. Once the desired domain wall configuration is achieved, the current applied to the domain wall stopping structure is stopped and the MT sensor is ready for use. The sensor can be initialized into a known state without needing to drive the mechanical system to a start or end position.
A method of initializing a multi-turn sensor, the multi-turn sensor comprising a length of magnetic track having a plurality of magnetoresistive sensing regions and arranged in at least one spiral configuration having a plurality of corner regions, the method comprising:
A magnetic sensor system, comprising:
A magnetic sensor arrangement, comprising:
Dependencies are inferred from the claim text.