×

Hall effect based angular position sensor

  • US 7,570,047 B2
  • Filed: 06/18/2007
  • Issued: 08/04/2009
  • Est. Priority Date: 06/18/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. An angular position sensor comprising:

  • a shaft termination mounted to a fixed structure by a universal joint having two rotational degrees of freedom;

    a turret mounted with a single rotational degree of freedom about a first axis to the fixed structure and linked to the shaft termination by a structure with a second degree of freedom, such that the shaft termination retains two degrees of freedom;

    a magnet fixedly mounted to the turret so that as the turret rotates in the single rotational degree of freedom the magnet moves along a portion of a circular arc spaced from and centered on the first axis;

    a magnetic field sensor fixedly mounted to the fixed structure and spaced further from the first axis than the arc defined by the magnet, so that the magnet is movable along the arc between the first axis and the magnetic field sensor; and

    wherein the single rotational degree of freedom of the turret produces rotation in a single plane that moves the magnet and provides an output from the magnetic field sensor that reflects only rotation of the shaft termination about the first axis.

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