Patents by Inventor Joel Mawhinney

Joel Mawhinney 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).

  • Commutation calibration via motor mapping
    Patent number: 8796965
    Abstract: A DC brushless motor includes a rotary actuation shaft having multiple poles. Each of the poles has multiple commutation steps. The DC brushless motor also includes a motor controller capable of controlling rotation of the rotary actuation shaft. The motor controller stores a commutation step map.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: August 5, 2014
    Assignee: Precision Engine Controls Corporation
    Inventor: Joel Mawhinney
  • Motor bus voltage commutation method
    Patent number: 8456114
    Abstract: A drive system for a motor has a switching network for supplying three phases of power to a motor, and a control for the switching network. The control is programmed to provide a commutation with a positive offset, ahead of a current position, when driving in opposition to a load, and to use one of a zero or negative offset when the control drives the motor complementary to the load force. A method and system are also disclosed and claimed.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 4, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Joel Mawhinney
  • COMMUTATION CALIBRATION VIA MOTOR MAPPING
    Publication number: 20120217914
    Abstract: A DC brushless motor includes a rotary actuation shaft having multiple poles. Each of the poles has multiple commutation steps. The DC brushless motor also includes a motor controller capable of controlling rotation of the rotary actuation shaft. The motor controller stores a commutation step map.
    Type: Application
    Filed: September 29, 2011
    Publication date: August 30, 2012
    Inventor: Joel Mawhinney
  • MOTOR BUS VOLTAGE COMMUTATION METHOD
    Publication number: 20110291598
    Abstract: A drive system for a motor has a switching network for supplying three phases of power to a motor, and a control for the switching network. The control is programmed to provide a commutation with a positive offset, ahead of a current position, when driving in opposition to a load, and to use one of a zero or negative offset when the control drives the motor complementary to the load force. A method and system are also disclosed and claimed.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 1, 2011
    Inventor: Joel Mawhinney