Patents by Inventor Steven Douglas Stiles

Steven Douglas Stiles 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).

  • Solenoid current control with direct forward prediction and iterative backward state estimation
    Patent number: 8109256
    Abstract: An engine control system comprises a current control module and a solenoid actuator module. The current control module determines a duty cycle based on a desired current through a solenoid of an engine system and a resistance of the solenoid and corrects the resistance based on an actual current through the solenoid. The solenoid actuator module actuates the solenoid based on the duty cycle.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: February 7, 2012
    Inventors: Yun Xiao, Steven Douglas Stiles, Carnell E. Williams, Ping Ge
  • SOLENOID CURRENT CONTROL WITH DIRECT FORWARD PREDICTION AND ITERATIVE BACKWARD STATE ESTIMATION
    Publication number: 20100122691
    Abstract: An engine control system comprises a current control module and a solenoid actuator module. The current control module determines a duty cycle based on a desired current through a solenoid of an engine system and a resistance of the solenoid and corrects the resistance based on an actual current through the solenoid. The solenoid actuator module actuates the solenoid based on the duty cycle.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 20, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Yun Xiao, Steven Douglas Stiles, Carnell E. Williams, Ping Ge
  • SYSTEM FOR CONTROLLING HIGH CURRENT COMPONENTS IN A MOTOR VEHICLE
    Publication number: 20090101631
    Abstract: A control system for controlling high current devices in a vehicle is disclosed. The system includes a power source, a first and a second plurality of high current devices and a high current device control module. The high current device control module is connected to the power source and has a multiplexer circuit and a plurality of driver circuits connected to the first and second plurality of high current devices. The multiplexer circuit is in communication with the plurality of driver circuits to selectively activate the first plurality of high current devices or the second plurality of high current devices.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 23, 2009
    Inventors: Tracy M. Farell, Steven Douglas Stiles
  • Automotive data recorder
    Patent number: 5948026
    Abstract: A multiple state automotive data storage and analysis procedure in which vehicle operating parameters are continuously logged in a first state while monitoring the vehicle operating condition for occurrence of any of a predetermined set of trigger conditions. Upon occurrence of any of the predetermined set of trigger conditions, logging operations are suspended and confirmation of occurrence of any of a predetermined set of storage conditions occurs in a second state. If such occurrence is confirmed, a third state is entered in which the logged parameter values are transferred to more permanent memory devices for off-line analysis thereof. If such occurrence is not confirmed, operations of the first state are resumed.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: September 7, 1999
    Assignee: General Motors Corporation
    Inventors: Delbert Gerald Beemer, II., Paul Stephen Zombory, Steven Douglas Stiles, Vivek Mehta, Liu Hong