Patents by Inventor Luke Comstock

Luke Comstock 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).

  • Reduction of EMI through switching frequency dithering
    Patent number: 6674789
    Abstract: A method of controlling the bandwidth of electromagnetic interference generated by a pulse modulation controlled automotive motor is disclosed. The method comprises providing a controller including at least one register thereof; the controller in signal communication with the motor for controlling the motor based upon operating parameters thereof; selecting a first pulse modulation frequency from a set of pulse modulation frequencies; selecting a first clock frequency; selecting a first hopping frequency; selecting a first switching frequency; initializing the at least one register, establishing thereby a prescribed at least one number; based upon the prescribed at least one number of the at least one register, the first clock frequency and the first hopping frequency randomly changing the switching frequency of the pulse modulation.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: January 6, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Abbas Fardoun, Luke Comstock, Heritianarisoa Rakouth