Patents by Inventor Justin O. Nielsen

Justin O. Nielsen 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).

  • Method and apparatus for monitoring speed and position of a rotating member
    Patent number: 9759737
    Abstract: A first counter is incremented when a first rotational speed sensing device detects a falling edge of one of the teeth of a single multi-tooth target wheel, a second counter is incremented when a second rotational speed sensing device detects a falling edge of one of the teeth, and a third counter is incremented when either of the first and second rotational speed sensing devices detects either of a rising edge and a falling edge of one of the teeth. A direction of rotation is determined based upon the third counter and a rotational speed of the rotatable member is determined based upon one of the first and second counters. The rotatable member is indicated to be at zero speed when the rotational speed is less than a threshold speed and the direction of rotation changes between a positive direction and a negative direction.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: September 12, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Leah Dunbar, Yo Chan Son, Martin E. Rosalik, Jr., Justin O. Nielsen
  • METHOD AND APPARATUS FOR MONITORING SPEED AND POSITION OF A ROTATING MEMBER
    Publication number: 20160054351
    Abstract: A first counter is incremented when a first rotational speed sensing device detects a falling edge of one of the teeth of a single multi-tooth target wheel, a second counter is incremented when a second rotational speed sensing device detects a falling edge of one of the teeth, and a third counter is incremented when either of the first and second rotational speed sensing devices detects either of a rising edge and a falling edge of one of the teeth. A direction of rotation is determined based upon the third counter and a rotational speed of the rotatable member is determined based upon one of the first and second counters. The rotatable member is indicated to be at zero speed when the rotational speed is less than a threshold speed and the direction of rotation changes between a positive direction and a negative direction.
    Type: Application
    Filed: December 4, 2014
    Publication date: February 25, 2016
    Inventors: Leah Dunbar, Yo Chan Son, Martin E. Rosalik, JR., Justin O. Nielsen
  • Method and system for controlling an electric motor using zero current offset value cancellation
    Patent number: 8378603
    Abstract: Methods and systems for controlling an electric motor are provided. The electric motor includes at least one winding. A winding current flowing through the at least one winding is monitored. The winding current has an oscillating component and an offset component. The offset component of the winding current is isolated from the oscillating component of the winding current. The electric motor is controlled based on the offset component of the winding current.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: February 19, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: S. M. N. Hasan, Brian A. Welchko, David P. Tasky, Justin O. Nielsen, Silva Hiti
  • METHOD AND SYSTEM FOR CONTROLLING AN ELECTRIC MOTOR USING ZERO CURRENT OFFSET VALUE CANCELLATION
    Publication number: 20110169438
    Abstract: Methods and systems for controlling an electric motor are provided. The electric motor includes at least one winding. A winding current flowing through the at least one winding is monitored. The winding current has an oscillating component and an offset component. The offset component of the winding current is isolated from the oscillating component of the winding current. The electric motor is controlled based on the offset component of the winding current.
    Type: Application
    Filed: January 14, 2010
    Publication date: July 14, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: S.M. N. HASAN, BRIAN A. WELCHKO, DAVID P. TASKY, JUSTIN O. NIELSEN, SILVA HITI