×

Angular position sensor

  • US 6,734,667 B2
  • Filed: 05/02/2003
  • Issued: 05/11/2004
  • Est. Priority Date: 01/11/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. An angle sensing system comprising:

  • a magnet having a magnetization, said magnet axially rotatable on an axis, said magnetization of the magnet giving rise to a nonzero component at a right angle to the axis;

    a magnetic field sensor positioned to sense axial magnetic field strength at a location offset from the axis;

    the magnet having a face proximal to the magnetic field sensor, the magnet giving rise to a sensed magnetic field at the magnetic field sensor, the face of the magnet shaped to provide a varying gap between the face of the magnet and the magnetic field sensor as a function of an angle of rotation of the magnet on the axis, the shape of the face selected to provide a first gap at a first angular position, a second gap larger than the first gap at a second angular position, and a third gap smaller than the second gap at a third angular position, the difference between the first and third angular positions being greater than 200 degrees, the second angular position being between the first and third angular positions.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×