Patents by Inventor Hou-Ching Cha

Hou-Ching Cha 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).

  • Nonlinear hysteresis control system
    Patent number: 7250738
    Abstract: A nonlinear hysteresis control system for controlling an actuator with nonlinear hysteresis effect is disclosed. An improved extended hysteresis effect profile further stores the displacement when a applied voltage of the actuator is from 0 voltage to a specific voltage and back to that specific voltage. Therefore, the system can be used under the condition of not very slow motion of the actuator.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: July 31, 2007
    Assignee: Chung-Yuan Christian University
    Inventors: Yung Ting, Hou-Ching Cha, Chun-Chung Lee