Patents by Inventor Hisashi Sasaoka

Hisashi Sasaoka 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).

  • Servo system with reduction of transient error and settling time
    Patent number: 4207506
    Abstract: A servo system wherein an actuating signal obtained by the subtraction of a controlled variable delivered from a controlled system from a secondary command variable is applied to the controlled system, the actuating signal is added to the command to provide a secondary command variable, and the command is compared with the controlled variable in such a manner that when they are coincident with each other, the control is effected so as to change the secondary command variable to a predetermined value, thereby reducing both the transient error and the transient or settling time to a minimum and consequently decreasing the steady state error to a minimum.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: June 10, 1980
    Assignee: Nippon Telegraph and Telephone Public Corporation
    Inventors: Hisashi Sasaoka, Akira Nagayama