Patents by Inventor George E. Danz

George E. Danz 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).

  • Control for improving induction transient response by excitation angle control
    Patent number: 4763057
    Abstract: A variable frequency AC induction motor servo control system wherein slip is momentarily increased in response to error signal transients. In a preferred embodiment, a phase shift is introduced in the energizing stator current as the servo velocity error signal increases over at least the lower portion of the error signal range, the maximum phase shift being between 45.degree. and 90.degree..
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: August 9, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventors: George E. Danz, C. Calvin Shuler
  • Induction motor slip control
    Patent number: 4543520
    Abstract: A variable frequency AC induction motor servo control system wherein slip is generated as a function of stator current. In a preferred embodiment the slip per ampere ratio is constant in the range from zero to approximately base speed and thereafter increases exponentially as the rotor speed increases above base speed.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: September 24, 1985
    Assignee: Kollmorgen, Technologies Corporation
    Inventors: George E. Danz, C. Calvin Shuler