Patents by Inventor Kenji Kanzaki

Kenji Kanzaki 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).

  • Rotary body drive control apparatus capable of compensating for variations of transfer characteristics
    Patent number: 5412302
    Abstract: A rotation control system includes a motor for driving a rotary body, a rotary encoder for detecting angular velocity of the rotary body, a CPU for controlling angular velocity of the motor via an interval counter and a motor driver based on the detected angular velocity of the rotary body. The CPU determines a transfer function of the rotation control system and then calculates gain and phase margins based on the transfer function. The CPU selects the most appropriate values of control parameters from preset values stored in a ROM when the gain or phase margin is out of a predetermined range.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: May 2, 1995
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Mamoru Kido, Kenji Kanzaki, Noribumi Sato, Minoru Kasama, Tosio Anzai