Patents by Inventor David A. Bluma

David A. Bluma 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).

  • DC motor adaptive controller apparatus
    Patent number: 4739234
    Abstract: A method and apparatus for operating a DC motor controller according to a first gain when the armature current of the DC motor is discontinuous, according to a second gain when the armature current is continuous, and according to a third gain when the armature current is in transition from the discontinuous to continuous conduction. The gains have proportional and integral terms and the integral term in the discontinuous and transition regions varies inversely to a current reference in the controller.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: April 19, 1988
    Assignee: MagneTek, Inc.
    Inventors: Dennis C. Nolan, David A. Bluma
  • DC motor adaptive controller
    Patent number: 4716348
    Abstract: A method for operating a DC motor controller according to a first gain when the armature current of the DC motor is discontinuous, according to a second gain when the armature current is continuous, and according to a third gain when the armature current is in transition from the discontinuous to continuous conduction. The gains have proportional and integral terms and the integral term in the discontinuous and transition regions varies inversely to a current reference in the controller.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: December 29, 1987
    Assignee: MagneTek, Inc.
    Inventors: Dennis C. Nolan, David A. Bluma