MOTOR, MOTOR SYSTEM, AND MOTOR ENCODER

摘要

A motor according to an embodiment includes a motor body, a rotating body, and a magnetic field sensor. The motor body rotates a shaft about the axis line thereof. The rotating body includes a permanent magnet and rotates along with the rotation of the shaft. The magnetic field sensor includes a magnet body having a large Barkhausen effect with the long direction thereof serving as the easy magnetization direction and is positioned to face the permanent magnet when the rotational position of the rotating body is at a given rotational position. The easy magnetization direction of the magnetic body is in a direction along a plane orthogonal to the rotation center line of the rotating body.

主权项

1. A motor comprising:
a motor body configured to rotate a shaft about an axis line thereof; a rotating body that includes a permanent magnet and rotates along with the rotation of the shaft; and a magnetic field sensor that includes a magnetic body having a large Barkhausen effect with a long direction thereof serving as an easy magnetization direction and is positioned to face the permanent magnet when a rotational position of the rotating body is at a given rotational position, the easy magnetization direction of the magnetic body being in a direction along a plane orthogonal to a rotation center line of the rotating body.