Patents by Inventor Steven R. Holley

Steven R. Holley 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).

  • Apparatus and method for minimizing limit cycle using complementary filtering techniques
    Patent number: 5015934
    Abstract: The apparatus controls the positioning of a device in response to a commanded input signal, and comprises an element for moving the device in response to an error signal. A sensor component determines the actual position of the device, the sensor component outputting a primary signal and a derivative signal corresponding to the actual position and velocity of the device, respectively. A complementary filter system filters the primary signal and the derivative signal to generate a derived position signal, the derived position signal being combined with the commanded input signal thereby generating the error signal. The filtering results in effectively increasing the resolution of the sensor component thereby reducing the limit cycle caused by quantization of the sensor component.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: May 14, 1991
    Assignee: Honeywell Inc.
    Inventors: Steven R. Holley, David C. Cunningham, Kevin D. Kral