Patents by Inventor Erwan SALAUN

Erwan SALAUN 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).

  • Method for calibrating an inertial navigation system with a limited mechanical turning range
    Patent number: 9671248
    Abstract: A method of calibrating an inertial unit having an inertial core with vibratory axisymmetric gyros, the method includes the steps of starting from a first position, causing the inertial core to pivot towards a second position about a pivot axis that is different from the sensing axes of the gyros and from a trisector thereof, while taking measurements of an angular orientation of the vibration of each gyro, the angular orientation being left free during pivoting; returning the inertial core to the first position; adjusting the angular orientation of the vibration of each gyro to a value corresponding to the second position; causing the inertial core to pivot towards the second position while once more taking measurements of the angular orientation of each gyro; and calibrating the inertial core as a function of the measurements taken.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: June 6, 2017
    Assignee: Sagem Defense Securite
    Inventor: Erwan Salaun
  • METHOD FOR CALIBRATING AN INERTIAL NAVIGATION SYSTEM WITH A LIMITED MECHANICAL TURNING RANGE
    Publication number: 20150308855
    Abstract: A method of calibrating an inertial unit having an inertial core with vibratory axisymmetric gyros, the method includes the steps of starting from a first position, causing the inertial core to pivot towards a second position about a pivot axis that is different from the sensing axes of the gyros and from a trisector thereof, while taking measurements of an angular orientation of the vibration of each gyro, the angular orientation being left free during pivoting; returning the inertial core to the first position; adjusting the angular orientation of the vibration of each gyro to a value corresponding to the second position; causing the inertial core to pivot towards the second position while once more taking measurements of the angular orientation of each gyro; and calibrating the inertial core as a function of the measurements taken.
    Type: Application
    Filed: November 22, 2013
    Publication date: October 29, 2015
    Inventor: Erwan SALAUN