Patents by Inventor Tetsurou Sakano

Tetsurou Sakano 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).

  • Method and apparatus for error correction in position sensing circuit
    Patent number: 4352050
    Abstract: A method and apparatus for correcting an error in a position sensing circuit employing a resolver, an Inductsyn (trade name) or the like. Accurate position sensing is not possible in a position sensor using a resolver or the like when the electromagnetic coupling between the secondary winding and a cosine excitation coil is different from that between the secondary winding and a sine excitation coil. To eliminate a position sensing error caused by such a disparity in electromagnetic coupling, the present invention varies an electrical angle .alpha.
    Type: Grant
    Filed: July 10, 1981
    Date of Patent: September 28, 1982
    Assignee: Fujitsu Fanuc Limited
    Inventor: Tetsurou Sakano