Patents by Inventor Jiade Chen

Jiade Chen 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).

  • Detection of saturation status for non-synchronous incremental actuators using a variable position estimate window
    Patent number: 6265843
    Abstract: A method for controlling non-synchronous actuators using a first and second estimate of the position of the actuator to create a variable position estimate window between which the actual position of the actuator is always bound. The first and second estimates of position are calculated based on the maximum and minimum speeds at which the actuator could be moving in each of first and second directions, and further wherein motion of the actuator in a saturated direction is disabled for as long as the first and second estimates converge at one of two final positions.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: July 24, 2001
    Assignee: Johnson Controls Technology Co.
    Inventors: Jonathan D. West, Brian T. Estill, Jiade Chen