Patents by Inventor Yongkai Xu

Yongkai Xu 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).

  • Motion control system self-calibrating
    Patent number: 8466639
    Abstract: A motion control system including components such as an accelerometer for detecting zero force positions and for self-calibrating the motion control system. The motion control system may be implemented in an active seat suspension.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: June 18, 2013
    Assignee: Bose Corporation
    Inventors: James A. Parison, Jr., Tyson Curtis Coey, Antonio Sangermano, II, Yongkai Xu
  • Loading and unloading stabilization in an active suspension system
    Patent number: 8112198
    Abstract: An active suspension system includes a relative slow-responding force bias eliminator (such as a pneumatic actuator) and a relatively fast-responding actuator (such as an electromagnetic actuator) that together support a plant (such as a truck seat or vehicle cabin). The system also includes a load-unload detector (which may be a physical or virtual detector) to detect a loading or unloading of the plant. When such a loading or unloading is detected, the system causes the force bias eliminator to respond quickly (e.g., as quick as possible) while controlling the fast-responding actuator so as to preserve the available energy for operating the actuator (e.g., so as to keep the fast-responding actuator from consuming all of its available energy) prior to when the force bias eliminator can respond.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: February 7, 2012
    Assignee: Bose Corporation
    Inventors: James A. Parison, Jr., Antonio Sangermano, II, Yongkai Xu
  • MOTION CONTROL SYSTEM SELF-CALIBRATING
    Publication number: 20110148331
    Abstract: A motion control system including components such as an accelerometer for detecting zero force positions and for self-calibrating the motion control system. The motion control system may be implemented in an active seat suspension.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Inventors: James A. Parison, JR., Tyson Curtis Coey, Antonio Sangermano, II, Yongkai Xu
  • LOADING AND UNLOADING STABILIZATION IN AN ACTIVE SUSPENSION SYSTEM
    Publication number: 20090248246
    Abstract: An active suspension system includes a relative slow-responding force bias eliminator (such as a pneumatic actuator) and a relatively fast-responding actuator (such as an electromagnetic actuator) that together support a plant (such as a truck seat or vehicle cabin). The system also includes a load-unload detector (which may be a physical or virtual detector) to detect a loading or unloading of the plant. When such a loading or unloading is detected, the system causes the force bias eliminator to respond quickly (e.g., as quick as possible) while controlling the fast-responding actuator so as to preserve the available energy for operating the actuator (e.g., so as to keep the fast-responding actuator from consuming all of its available energy) prior to when the force bias eliminator can respond.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Inventors: James A. Parison, JR., Antonio Sangermano, II, Yongkai Xu