Patents by Inventor Robert D. Rasmussen

Robert D. Rasmussen 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: 8392869
    Abstract: Systems and methods for estimating the lifetime of an electrical system in accordance with embodiments of the invention are disclosed. One embodiment of the invention includes iteratively performing Worst Case Analysis (WCA) on a system design with respect to different system lifetimes using a computer to determine the lifetime at which the worst case performance of the system indicates the system will pass with zero margin or fail within a predetermined margin for error given the environment experienced by the system during its lifetime.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: March 5, 2013
    Assignee: California Institute of Technology
    Inventors: Timothy L. Heaps, Douglas J. Sheldon, Paul N. Bowerman, Chester J. Everline, Eddy Shalom, Robert D. Rasmussen
  • Publication number: 20120117528
    Abstract: Systems and methods for estimating the lifetime of an electrical system in accordance with embodiments of the invention are disclosed. One embodiment of the invention includes iteratively performing Worst Case Analysis (WCA) on a system design with respect to different system lifetimes using a computer to determine the lifetime at which the worst case performance of the system indicates the system will pass with zero margin or fail within a predetermined margin for error given the environment experienced by the system during its lifetime.
    Type: Application
    Filed: June 15, 2011
    Publication date: May 10, 2012
    Applicant: California Institute of Technology
    Inventors: Timothy L. Heaps, Douglas J. Sheldon, Paul N. Bowerman, Chester J. Everline, Eddy Shalom, Robert D. Rasmussen
  • Patent number: 6745089
    Abstract: An autonomous controller, comprised of a state knowledge manager, a control executor, hardware proxies and a statistical estimator collaborates with a goal elaborator, with which it shares common models of the behavior of the system and the controller. The elaborator uses the common models to generate from temporally indeterminate sets of goals, executable goals to be executed by the controller. The controller may be updated to operate in a different system or environment than that for which it was originally designed by the replacement of shared statistical models and by the instantiation of a new set of state variable objects derived from a state variable class. The adaptation of the controller does not require substantial modification of the goal elaborator for its application to the new system or environment.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: June 1, 2004
    Assignee: California Institute of Technology
    Inventors: Robert D. Rasmussen, Daniel L. Dvorak, Kim P. Gostelow, Thomas W. Starbird, Erann Gat, Steve Ankuo Chien, Robert M. Keller
  • Publication number: 20020026249
    Abstract: An autonomous controller, comprised of a state knowledge manager, a control executor, hardware proxies and a statistical estimator collaborates with a goal elaborator, with which it shares common models of the behavior of the system and the controller. The elaborator uses the common models to generate from temporally indeterminate sets of goals, executable goals to be executed by the controller. The controller may be updated to operate in a different system or environment than that for which it was originally designed by the replacement of shared statistical models and by the instantiation of a new set of state variable objects derived from a state variable class. The adaptation of the controller does not require substantial modification of the goal elaborator for its application to the new system or environment.
    Type: Application
    Filed: February 1, 2001
    Publication date: February 28, 2002
    Inventors: Robert D. Rasmussen, Daniel L. Dvorak, Kim P. Gostelow, Thomas W. Starbird, Erann Gat, Steve Ankuo Chien, Robert M. Keller
  • Patent number: 4933936
    Abstract: This is a distributed computing system providing flexible fault tolerance; ease of software design and concurrency specification; and dynamic balance of the loads. The system comprises a plurality of computers each having a first input/output interface and a second input/output interface for interfacing to communications networks each second input/output interface including a bypass for bypassing the associated computer. A global communications network interconnects the first input/output interfaces for providing each computer the ability to broadcast messages simultaneously to the remainder of the computers. A meshwork communications network interconnects the second input/output interfaces providing each computer with the ability to establish a communications link with another of the computers bypassing the remainder of computers. Each computer is controlled by a resident copy of a common operating system.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: June 12, 1990
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Robert D. Rasmussen, Robert M. Manning, Blair F. Lewis, Gary S. Bolotin, Richard S. Ward