Patents by Inventor Elvis Dolivier

Elvis Dolivier 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).

  • System and method of positional control with backlash compensation
    Patent number: 8511192
    Abstract: A device for preventing backlash in a gear train, comprising a first and second drive gear, driven by a first and second motor, with a driven gear, a system controller defining a nominal trajectory of said driven gear, a position feedback controller for calculating a speed set point, a phase controller for calculating a difference between said first and second motor torque, providing torque upper and lower levels, comparing said difference to said upper and lower levels and adjusting the phase set point for said first and second motors based at least upon the comparing, where the phase is reduced if said difference is greater than or equal to said upper level, said phase is increased if said difference is less than or equal to said lower level, and said phase is kept constant if said difference is greater than said lower level and less than said upper level.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: August 20, 2013
    Assignee: Hitec Luxembourg S.A.
    Inventors: Pierre Hirtt, Yves Leiner, Elvis Dolivier
  • System and Method of Positional Control with Backlash Compensation
    Publication number: 20110237386
    Abstract: A device for preventing backlash in a gear train, comprising a first and second drive gear, driven by a first and second motor, with a driven gear, a system controller defining a nominal trajectory of said driven gear, a position feedback controller for calculating a speed set point, a phase controller for calculating a difference between said first and second motor torque, providing torque upper and lower levels, comparing said difference to said upper and lower levels and adjusting the phase set point for said first and second motors based at least upon the comparing, where the phase is reduced if said difference is greater than or equal to said upper level, said phase is increased if said difference is less than or equal to said lower level, and said phase is kept constant if said difference is greater than said lower level and less than said upper level.
    Type: Application
    Filed: March 29, 2011
    Publication date: September 29, 2011
    Inventors: Pierre Hirtt, Yves Leiner, Elvis Dolivier