Patents by Inventor Kirk D. Hanson

Kirk D. Hanson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Servo motor controller using position interpolation
    Patent number: 6051943
    Abstract: A motor control system employing a single Hall sensor 2 providing a position feedback signal to a control circuit 10 is disclosed. The control circuit includes a tach counter circuit 12, a ramp mode circuit 14, an interpolation circuit 16, and a commutation logic circuit 18. Drive signals are output to the motor windings by the commutation logic circuit 18. The control state defining the drive signals is advanced on the basis of the estimated rotor position. The estimate of the rotor position is determined by linearly interpolating between Hall signal transitions.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: April 18, 2000
    Assignee: Iomega Corporation
    Inventors: Steve Rabin, Kirk D. Hanson, Mark W. Perona
  • System for controlling the speed of a motor driven by an unregulated voltage
    Patent number: 5729652
    Abstract: A method for controlling the speed of a motor driven by an unregulated voltage supply is disclosed. The disclosed method comprises obtaining a ripple signal (V.sub.R) representative of the ripple component of the supply voltage, and modulating the motor current (I.sub.M) in response to at least the ripple signal to maintain the speed of the motor at a prescribed target speed.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: March 17, 1998
    Assignee: Iomega Corporation
    Inventor: Kirk D. Hanson
  • System for controlling the speed of a motor driven by an unregulated voltage
    Patent number: 5664047
    Abstract: A method for controlling the speed of a motor driven by an unregulated voltage supply is disclosed. The disclosed method comprises obtaining a ripple signal (V.sub.R) representative of the ripple component of the supply voltage, and modulating the motor current (I.sub.M) in response to at least the ripple signal to maintain the speed of the motor at a prescribed target speed.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: September 2, 1997
    Assignee: Iomega Corporation
    Inventor: Kirk D. Hanson