Patents by Inventor William Schwind

William Schwind 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).

  • Flight control system and method of using piezoelectric modal sensors to mitigate flexible body dynamics
    Patent number: 7645970
    Abstract: A flight control system is provided with one or more modal sensors that are each configured to measure the rate and possibly acceleration for a flexible body mode of the flight vehicle. The modal sensor's rate and suitably acceleration are subtracted from the rate and acceleration measured by the IMU such that the values provided to the flight controller more closely represent only the rate and acceleration of the flight vehicle's rigid airframe component. A piezoelectric modal sensor is capable of sensing a particular flexible body mode over variations in the modal frequency without inducing additional phase loss in the control loop in order to maintain suitable phase and gain margins. Sensors are suitably provided for at least and possibly only the 1st lateral bending modes in the pitch and yaw channels.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: January 12, 2010
    Assignee: Raytheon Company
    Inventors: Robert Adams, William Schwind
  • FLIGHT CONTROL SYSTEM AND METHOD OF USING PIEZOELECTRIC MODAL SENSORS TO MITIGATE FLEXIBLE BODY DYNAMICS
    Publication number: 20080169384
    Abstract: A flight control system is provided with one or more modal sensors that are each configured to measure the rate and possibly acceleration for a flexible body mode of the flight vehicle. The modal sensor's rate and suitably acceleration are subtracted from the rate and acceleration measured by the IMU such that the values provided to the flight controller more closely represent only the rate and acceleration of the flight vehicle's rigid airframe component. A piezoelectric modal sensor is capable of sensing a particular flexible body mode over variations in the modal frequency without inducing additional phase loss in the control loop in order to maintain suitable phase and gain margins. Sensors are suitably provided for at least and possibly only the 1st lateral bending modes in the pitch and yaw channels.
    Type: Application
    Filed: January 15, 2007
    Publication date: July 17, 2008
    Inventors: Robert Adams, William Schwind