Patents by Inventor Wayne T. Culberson

Wayne T. Culberson 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).

  • Adaptive control system
    Patent number: 4912381
    Abstract: A real time adaptive control capable of maintaining stable operation with changing inertia. The controller utilizes a pseudo-derivative feedback (PDF) type control wherein dynamic adjustment is achieved by adjusting only a single variable. The variable can be controlled as a function of the derivation of motor speed divided by motor current for adaptive control with changing inertia. Control may also be achieved as a function of motor speed divided by the integral of motor current over the same interval. In a digital implementation the integral of motor current the time required for a predetermined speed change provides effective control.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: March 27, 1990
    Assignee: Kollmorgen Corporation
    Inventor: Wayne T. Culberson
  • Adaptive control system
    Patent number: 4733149
    Abstract: A real time adaptive control capable of maintaining stable operation with changing inertia. The controller utilizes a pseudo-derivative feedback (PDF) type control wherein dynamic adjustment is achieved by adjusting only a single variable. The variable can be controlled as a function of the derivation of motor speed divided by motor current for adaptive control with changing inertia. Control may also be achieved as a function of motor speed divided by the integral of motor current over the same interval. In a digital implementation the integral of motor current the time required for a predetermined speed change provides effective control.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: March 22, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventor: Wayne T. Culberson