Patents by Inventor Lauren M. WHITE

Lauren M. WHITE 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: 11689142
    Abstract: A control module comprises software instructions for execution by an electronic data processor. An inductance estimator is configured to estimate direct inductance and quadrature inductance associated with the electric machine based on a first set of equations that assume constant rotor resistance and constant magnetic flux. A torque estimator is configured to estimate an observed torque associated with a rotor of the electric machine based a commanded direct-axis voltage and a commanded quadrature-axis voltage, where the observed torque is proportional to the observed power consumption of the electric machine. A pulse-width-modulation (PWM) module is configured to provide pulse-width modulated signals to the electric machine based on the commanded direct-axis voltage and a commanded quadrature-axis voltage. A back-electromotive force adjustment is derived from an estimated, observed torque and a commanded torque.
    Type: Grant
    Filed: December 12, 2021
    Date of Patent: June 27, 2023
    Assignee: Deere & Company
    Inventors: Lauren M. White, Long Wu, Lav Thyagarajan, Danielle Li, Scott C. Johnson
  • Patent number: 11602095
    Abstract: An agricultural machine includes a seeding system having a seed transport mechanism configured to transport a seed along a transport route, a seed sensor configured to sense presence of the seed at a first location along the transport route, and a motor configured to drive movement of the seed transport mechanism to transport the seed from the first location to a second location in which the seed is released from the seed transport mechanism. A processing system is configured to track a position of the seed along the transport route based on an indication of the sensed presence of the seed at the first location and detected movement of the seed transport mechanism, and generate a motor operating parameter based on the tracked position of the seed and a target parameter for releasing the seed. The motor of the seeding system is operated based on the motor operating parameter.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 14, 2023
    Assignee: DEERE & COMPANY
    Inventors: Cary S. Hubner, Matt D. Bartelson, Erick D. Esping, Scott C. Johnson, Lauren M. White, Douglas J. Olson
  • Publication number: 20230034814
    Abstract: An agricultural machine includes a seeding system having a seed transport mechanism configured to transport a seed along a transport route, a seed sensor configured to sense presence of the seed at a first location along the transport route, and a motor configured to drive movement of the seed transport mechanism to transport the seed from the first location to a second location in which the seed is released from the seed transport mechanism. A processing system is configured to track a position of the seed along the transport route based on an indication of the sensed presence of the seed at the first location and detected movement of the seed transport mechanism, and generate a motor operating parameter based on the tracked position of the seed and a target parameter for releasing the seed. The motor of the seeding system is operated based on the motor operating parameter.
    Type: Application
    Filed: July 7, 2022
    Publication date: February 2, 2023
    Inventors: Cary S. HUBNER, Matt D. Bartelson, Erick D. Esping, Scott C. Johnson, Lauren M. White, Douglas J. Olson
  • Patent number: 11535234
    Abstract: An energy management control module is configured for communication with the vehicle controller. The energy management control module is configured to generate generator command data for the generator in a power command mode. In one embodiment, the energy management control module supports a first mode and a second mode. A first mode comprises the power command mode and a stored power extraction mode that are mutually exclusive modes for any sampling interval. In the power command mode of the first mode, the energy management controller is configured to generate generator command data for the generator based on a commanded motor torque and an energy storage power command (e.g., SOC command data) if the primary rotational energy of the internal combustion engine meets or exceeds the total vehicle load for a sampling interval.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: December 27, 2022
    Assignee: Deere & Company
    Inventors: Tyler J. Duffy, Dan Li, Long Wu, Eric Vilar, Lauren M. White
  • Publication number: 20220376642
    Abstract: A control module comprises software instructions for execution by an electronic data processor. An inductance estimator is configured to estimate direct inductance and quadrature inductance associated with the electric machine based on a first set of equations that assume constant rotor resistance and constant magnetic flux. A torque estimator is configured to estimate an observed torque associated with a rotor of the electric machine based a commanded direct-axis voltage and a commanded quadrature-axis voltage, where the observed torque is proportional to the observed power consumption of the electric machine. A pulse-width-modulation (PWM) module is configured to provide pulse-width modulated signals to the electric machine based on the commanded direct-axis voltage and a commanded quadrature-axis voltage. A back-electromotive force adjustment is derived from an estimated, observed torque and a commanded torque.
    Type: Application
    Filed: December 12, 2021
    Publication date: November 24, 2022
    Inventors: Lauren M. White, Long Wu, Lav Thyagarajan, Danielle Li, Scott C. Johnson
  • Publication number: 20210253081
    Abstract: An energy management control module is configured for communication with the vehicle controller. The energy management control module is configured to generate generator command data for the generator in a power command mode. In one embodiment, the energy management control module supports a first mode and a second mode. A first mode comprises the power command mode and a stored power extraction mode that are mutually exclusive modes for any sampling interval. In the power command mode of the first mode, the energy management controller is configured to generate generator command data for the generator based on a commanded motor torque and an energy storage power command (e.g., SOC command data) if the primary rotational energy of the internal combustion engine meets or exceeds the total vehicle load for a sampling interval.
    Type: Application
    Filed: June 26, 2020
    Publication date: August 19, 2021
    Inventors: Tyler J. Duffy, Dan Li, Long Wu, Eric Vilar, Lauren M. White
  • Publication number: 20210127558
    Abstract: An agricultural machine includes a seeding system having a seed transport mechanism configured to transport a seed along a transport route, a seed sensor configured to sense presence of the seed at a first location along the transport route, and a motor configured to drive movement of the seed transport mechanism to transport the seed from the first location to a second location in which the seed is released from the seed transport mechanism. A processing system is configured to track a position of the seed along the transport route based on an indication of the sensed presence of the seed at the first location and detected movement of the seed transport mechanism, and generate a motor operating parameter based on the tracked position of the seed and a target parameter for releasing the seed. The motor of the seeding system is operated based on the motor operating parameter.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 6, 2021
    Inventors: Cary S. HUBNER, Matt D. BARTELSON, Erick D. ESPING, Scott C. JOHNSON, Lauren M. WHITE, Douglas J. OLSON