Patents by Inventor Frederic Pierre Lacaux

Frederic Pierre Lacaux 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: 11967818
    Abstract: Described are systems and methods for monitoring, detecting, and/or protecting various systems of an aerial vehicle, such as an unmanned aerial vehicle (UAV). Embodiments of the present disclosure can provide a multi-tiered system to provide monitoring, detection, and/or initiation of protection protocols in response to detected faults in connection with the electronics associated with UAV systems, such as the motor drive and/or control systems that may drive the propulsion systems of the UAV.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: April 23, 2024
    Assignee: Amazon Technologies, Inc.
    Inventors: Lizon Maharjan, Frederic Pierre Lacaux, Dean Joseph Brestel, Xiaoqi Wang, Andrew Lueneburg, Marc Ian Feifel
  • Patent number: 11677343
    Abstract: Systems and methods for sensorless motor control may include a back EMF (electromotive force) observer, an adaptive EMF filter, magnitude compensation, hybrid rotor position and speed determination, rotor position and speed blending, and angle compensation. In order to provide accurate and reliable rotor position and speed estimations for a motor over a wide and varied range of speeds, at low speeds, during speed reversals, and/or in the presence of external forces, loads, or torques, the sensorless motor control may utilize a hybrid rotor position and speed determination that leverages both angle-based and magnitude-based methods. Further, the outputs of the two methods may be blended based on a shaping function to generate a final estimated rotor position and speed. Then, the motor may be more accurately and reliably controlled based on the final estimated rotor position and speed.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: June 13, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Xiaoqi Wang, Marco Antonio De Barros Ceze, Evan Matthew Francis, Marc Ian Feifel, Frederic Pierre Lacaux, Michael Szmuk