Patents by Inventor Philippe Cottard

Philippe Cottard 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).

  • Electrical power steering system for a motor vehicle
    Patent number: 9008910
    Abstract: An electrical power steering system for a motor vehicle. The system includes a rack actuator and a sensor for measuring torque applied to the steering wheel by the driver, the actuator and the sensor being arranged on the steering column, respectively between the steering wheel and the rack, and between the actuator and the steering wheel. The system develops a final assistance torque of the electrical power steering, which is adapted to simulate an identical localization of the rack actuator and the torque measuring sensor on the steering column, such that the Bode diagram phase representing the operation of the system is essentially nil at the two main frequencies of the mechanical resonance of the system.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: April 14, 2015
    Assignee: Renault S.A.S.
    Inventors: Philippe Cottard, Didier Martinez
  • ELECTRICAL POWER STEERING SYSTEM FOR A MOTOR VEHICLE
    Publication number: 20090216407
    Abstract: An electrical power steering system for a motor vehicle. The system includes a rack actuator and a sensor for measuring torque applied to the steering wheel by the driver, the actuator and the sensor being arranged on the steering column, respectively between the steering wheel and the rack, and between the actuator and the steering wheel. The system develops a final assistance torque of the electrical power steering, which is adapted to simulate an identical localization of the rack actuator and the torque measuring sensor on the steering column, such that the Bode diagram phase representing the operation of the system is essentially nil at the two main frequencies of the mechanical resonance of the system.
    Type: Application
    Filed: May 4, 2007
    Publication date: August 27, 2009
    Applicant: RENAULT S.A.S.
    Inventors: Philippe Cottard, Didier Martinez