Patents Assigned to Yukitoshi Ihara
  • Numerical control device
    Patent number: 4961034
    Abstract: A numerical control device comprising a lost motion correction data calculating device having a table/function which represents the motor current of a servo motor, in a servo mechanism for servo-controlling a mechanical movable part. The motor current is detected at a given time instant, and the corresponding amount of lost motion correction is then calculated. The position error caused by the lost motion can be corrected with high accuracy.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: October 2, 1990
    Assignees: Yoshiaki Kakino, Yukitoshi Ihara, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiaki Kakino, Yukitoshi Ihara, Mitsuo Yonetani, Takeo Teshima