Patents by Inventor Emmanuel Langouet

Emmanuel Langouet 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 adaptively driving a stepper motor, and corresponding device
    Patent number: 10248135
    Abstract: A stepper motor is driven according to step driving modes including a full-step driving mode, a half-step driving mode and micro-stepping modes. The stepper motor may also be driven in an acceleration phase. A method of controlling the stepper motor includes controlling the current step driving mode of the motor by a processing unit. During the acceleration phase of the stepper motor and the stepper motor being in driven in a current step driving mode other than the full-step driving mode, the processing unit tests, after each speed increase, if a remaining computing power of the processing unit is sufficient for control of the stepper motor to remain in the current step driving mode, and if not the processing unit, in presence of a first switching condition, switches control of the stepper motor to the driving mode having the closest coarser step.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 2, 2019
    Assignee: STMicroelectronics (Grand Ouest) SAS
    Inventors: Emmanuel Langouet, Samuel Rousselin
  • METHOD FOR ADAPTIVELY DRIVING A STEPPER MOTOR, AND CORRESPONDING DEVICE
    Publication number: 20180129227
    Abstract: A stepper motor is driven according to step driving modes including a full-step driving mode, a half-step driving mode and micro-stepping modes. The stepper motor may also be driven in an acceleration phase. A method of controlling the stepper motor includes controlling the current step driving mode of the motor by a processing unit. During the acceleration phase of the stepper motor and the stepper motor being in driven in a current step driving mode other than the full-step driving mode, the processing unit tests, after each speed increase, if a remaining computing power of the processing unit is sufficient for control of the stepper motor to remain in the current step driving mode, and if not the processing unit, in presence of a first switching condition, switches control of the stepper motor to the driving mode having the closest coarser step.
    Type: Application
    Filed: May 30, 2017
    Publication date: May 10, 2018
    Inventors: Emmanuel Langouet, Samuel Rousselin