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US 10,119,840 B2Granted
Measuring system and drive system
AssigneeTDK-Micronas GmbH
InventorsYan Bondar, Stefan Albrecht
Life of this patent
Estimating the term…
Abstract
A measuring system and drive system with a measuring system, a magnet, a transmitter, and a magnetic field sensor. The magnetic field sensor is arranged between the magnet and the transmitter. The transmitter has a number of segments made of a magnetically conductive material, each segment having a wing shape with a web edge that is radially directed outwards, each web edge being diagonally designed towards the rotational direction, and that each web edge is distanced from the magnetic field sensor by an air gap.
Claims17
A measuring system comprising:
- a magnet;
- a transmitter rotating about an axis in a rotational direction;
- a magnetic field sensor arranged between the magnet and the transmitter, the transmitter having a plurality of segments made of a magnetically conductive material,
- at least two of the plurality of segments having a wing shape with a web edge, the segments extending radially outwards from a hub of the transmitter, each web edge being disposed at an end of each of the at least two segments opposite the hub, the segments being arranged on the hub diagonal to a rotational axis of the hub, and each web edge arranged at a distance from the magnetic field sensor by a first air gap,
- wherein each segment has two lateral edges substantially perpendicular to an outer surface of the hub and substantially perpendicular to the web edge, the two lateral edges being substantially perpendicular to wing faces of each segment and ending at the outer surface of the hub,
- wherein the magnetic field sensor detects each web edge of the transmitter, and
- wherein at least one passing segment of the segments is always directly between the hub and the magnetic field sensor, such that a plane intersects the hub, the web edge of the at least one passing segment, and the magnetic field sensor.
4 more elements
A measuring system comprising:
- a magnet;
- a magnetic field sensor;
- a hub attached to a shaft of a motor;
- at least two blades extending from the hub towards the magnetic field sensor and the magnet, an outer edge of each of the at least two blades opposite the hub being a web edge, each blade being magnetically conductive,
- wherein the magnetic field sensor measures the interaction between the magnet and each web edge passing by the magnetic sensor,
- wherein each blade has two lateral edges substantially perpendicular to an outer surface of the hub and substantially perpendicular to the web edge, the two lateral edges being substantially perpendicular to wing faces of each blade and ending at the outer surface of the hub, and
- wherein at least one passing blade of the blades is always directly between the hub and the magnetic field sensor, such that a plane intersects the hub, the web edge of the at least one passing blade, and the magnetic field sensor.
4 more elements
Dependencies are inferred from the claim text.