Patents by Inventor Olof Keijser

Olof Keijser 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).

  • Flatness control in the rolling of strip
    Patent number: 5535129
    Abstract: The invention relates to an optimization of the control actions "c" via control members for the work rolls during flatness control of strip and comprises a method for evaluation of the control actions and an evaluation device which constitutes an integral part of the control equipment. The control actions are obtained by solution of the relationship c=(A.sup.T A).sup.-1 .multidot.A.sup.T .multidot.f=B.multidot.f, wherein A is a matrix which describes the stress distribution which arises across the strip when the different control members are activated and wherein "f" is a vector which contains the flatness errors obtained after measurement.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: July 9, 1996
    Assignee: Asea Brown Boveri AB
    Inventor: Olof Keijser