Patents by Inventor Steven H. Degroote

Steven H. Degroote 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).

  • Patent number: 7723941
    Abstract: A system and method of command signal conditioning in high response systems is disclosed. The system includes a central digital controller having a digital controller frame rate, a motor, a motor controller in communication with the digital controller and the motor, the motor controller having a motor controller frame rate higher than the digital controller frame rate, and a signal conditioner adapted to condition the command signal to produce a modified command signal at the motor controller frame rate. The signal conditioner is preferably implemented in software. In one embodiment, the signal conditioner is adapted to calculate a moving average at the frame rate of the motor controller. In another embodiment, the signal conditioner comprises a first order hold and a filter in communication therewith. A method of command signal conditioning in accordance with the foregoing is also disclosed.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: May 25, 2010
    Assignee: The Boeing Company
    Inventors: Jeffrey M. Roach, Steven H. Degroote
  • Patent number: 5973470
    Abstract: A compensation design allows for use of a generic servoamplifier for multiple types of actuator Direct Drive Valves (DDV). Cost savings can be realized by using common electronics applied to multiple actuator types. The implementation allows for design of the compensation directly from experimentally or analytically derived frequency performance curves of the generic servoamplifier resulting in the performance comparable to a custom servoamplifier for the direct drive valves.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: October 26, 1999
    Assignee: McDonnell Douglas Corp.
    Inventor: Steven H. Degroote