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  • Artificial intelligence (AI) based privacy amplification
    Patent number: 11956268
    Abstract: Disclosed are systems, methods, and non-transitory computer-readable media for AI based privacy amplification. A data security system allows for data transmitted between devices to be secured using varying levels of data security that are adjusted dynamically based on the determined sensitivity level of the data. The data security system uses AI (e.g., machine learning models) to predict the sensitivity level of data being transmitted between the devices in real-time and applies an appropriate level of data security based on the predicted sensitivity level. Dynamically adjusting the level of data security that is used based on the sensitivity level of the data provides for heightened levels of data security to protect highly sensitive data, and lower levels of data security to conserve computing resources when protecting less sensitive data.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: April 9, 2024
    Assignee: Davidson Technologies, Inc.
    Inventor: Lisa C. Hammitt
  • SYSTEM AND METHOD FOR GUIDING AND CONTROLLING A MISSILE USING HIGH ORDER SLIDING MODE CONTROL
    Publication number: 20130092785
    Abstract: Higher Order Sliding Mode (HOSM) control techniques are applied to the Guidance Control (G&C) of interceptor missile in which velocity may be steered by combination of main thrust, aerodynamic lift and lateral on-off divert thrusters, and attitude may be steered by continuous or on-off actuators. Methods include the pointing of the seeker, its associated estimation processes, a guidance law that uses concurrent divert mechanisms, and an attitude autopilot. The insensitivity of the controller to matched disturbances allows the concurrent usage of the divert mechanisms without adverse effect on the accuracy. The controller also allows the de-coupling of the control of roll, pitch and yaw channels, and usage quaternions to represent body attitude and it provides control perfect robustness. While it conceivable to design separately the components of the G&C method, it is widely accepted that designing them in an integrated fashion usually produces a better result.
    Type: Application
    Filed: July 10, 2009
    Publication date: April 18, 2013
    Applicant: Davidson Technologies, Inc.
    Inventors: Christian H. Tournes, Yuri B. Shtessel
  • System and method for guiding and controlling a missile using high order sliding mode control
    Patent number: 8436283
    Abstract: Higher Order Sliding Mode (HOSM) control techniques are applied to the Guidance Control (G&C) of interceptor missile in which velocity may be steered by combination of main thrust, aerodynamic lift and lateral on-off divert thrusters, and attitude may be steered by continuous or on-off actuators. Methods include the pointing of the seeker, its associated estimation processes, a guidance law that uses concurrent divert mechanisms, and an attitude autopilot. The insensitivity of the controller to matched disturbances allows the concurrent usage of the divert mechanisms without adverse effect on the accuracy. The controller also allows the de-coupling of the control of roll, pitch and yaw channels, and usage quaternions to represent body attitude and it provides control perfect robustness. While it conceivable to design separately the components of the G&C method, it is widely accepted that designing them in an integrated fashion usually produces a better result.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: May 7, 2013
    Assignee: Davidson Technologies Inc.
    Inventors: Christian Tournes, Yuri Shtessel
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