Patents by Inventor STephen K. C. Chan

STephen K. C. Chan 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).

  • Manipulator arm position sensing
    Patent number: 4893254
    Abstract: A method of controlling the movement of an articulated arm to permit the arm to move an end point thereof more freely and more directly to a preselected target. This smoother operation is obtained by a computer calculating the change in joint angle using an iterative pseudo inverse Jacobian having a damping factor. The damping factor is adjusted for each iteration based on the distance necessary to reach said preselected target.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: January 9, 1990
    Assignee: University of British Columbia
    Inventors: STephen K. C. Chan, Peter D. Lawrence