Patents by Inventor Daniel J. Berry

Daniel J. Berry 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).

  • Publication number: 20210099123
    Abstract: A method, system, and apparatus for controlling and regulating operation of a permanent magnet rotary electric machine including a stator and a rotor includes determining a first reactive power term associated with the electric machine based upon voltage, and determining a second reactive power term associated with the electric machine based upon flux. A first motor temperature associated with the electric machine is determined based upon the first and second reactive power terms, and power output from the permanent magnet electric machine is controlled based upon the first motor temperature.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 1, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anno Yoo, Daniel J. Berry, Young J. Kim
  • Publication number: 20210067075
    Abstract: A method for estimating a magnet temperature of a rotor magnet within a rotary electric machine includes, while a rotor of the electric machine is stationary, injecting a high-frequency voltage component onto a control voltage of the electric machine, via a controller, to generate an adjusted voltage command, and extracting a high-frequency component of a resulting current as an extracted high-frequency component. The method also includes calculating an inductance value of the electric machine using the extracted high-frequency component of the resulting current. The magnet temperature is estimated using the calculated inductance value and an angular position of the rotor. The method includes controlling an operation of the electric machine using the estimated magnet temperature. An electric powertrain uses the electric machine and controller noted above.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 4, 2021
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, Seoul National University R & DB Foundation
    Inventors: Daniel J. Berry, Anno Yoo, Seung Ki Sul, Hyun-Sam Jung
  • Publication number: 20210010832
    Abstract: A resolver disposed to monitor a rotatable member is described, along with an associated method for evaluating an output signal therefrom. The method for monitoring the resolver includes supplying an excitation signal to the resolver, and monitoring, at an oversampling rate, first and second output signals from the resolver. An oversampling routine is executed to determine averages of the first and second output signals from the resolver. A demodulation angle error is determined based upon the first and second output signals from the resolver, and provided as feedback. A position of the resolver is also determined based upon the first and second output signals from the resolver.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 14, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Young Joo Lee, Anno Yoo, Milan A. Vadera, Daniel J. Berry
  • Patent number: 10340819
    Abstract: A torque system includes a DC power device, a polyphase electric machine, a contactor pair, a power inverter module (PIM), and a controller. The PIM connects to the power device via the contactor pair and directly connects to the electric machine. The controller executes a method to control a fault response under a fault condition resulting in opening of the contactor pair and a polyphase short condition. The controller calculates a back EMF of the electric machine and transmits switching control signals to semiconductor switches of the PIM to transition from the polyphase short condition to a polyphase open condition only when the calculated back EMF is less than a calibrated value and a voltage rise on a DC side of the PIM is less than a calibrated voltage rise. A vehicle includes the DC power device, road wheels, electric machine, PIM, and controller.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: July 2, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Daniel J. Berry, Wei D. Wang, Bon Ho Bae, Brian A. Welchko, Wesley G. Zanardelli, Melissa R. McNeely
  • Patent number: 10162680
    Abstract: A method of exchanging data in a real-time operating system, between a primary core and a secondary core in a multi-core processor, includes executing a primary path via the primary core and executing a secondary path via the secondary core. The primary path is configured to be a relatively faster processing task and the secondary path is configured to be a relatively slower processing task. The method includes devising a freeze in process flag to have a respective flag status set and cleared by the primary path. The method includes devising a data frozen flag to have a respective flag status set and cleared by both the primary and the secondary paths. A component that is operatively connected to the multi-core processor may be controlled based at least partially on a difference between primary and secondary sets of calculations executed by the primary and secondary cores, respectively.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: December 25, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Young Joo Lee, Daniel J. Berry, Brian A. Welchko
  • Publication number: 20180165127
    Abstract: A method of exchanging data in a real-time operating system, between a primary core and a secondary core in a multi-core processor, includes executing a primary path via the primary core and executing a secondary path via the secondary core. The primary path is configured to be a relatively faster processing task and the secondary path is configured to be a relatively slower processing task. The method includes devising a freeze in process flag to have a respective flag status set and cleared by the primary path. The method includes devising a data frozen flag to have a respective flag status set and cleared by both the primary and the secondary paths. A component that is operatively connected to the multi-core processor may be controlled based at least partially on a difference between primary and secondary sets of calculations executed by the primary and secondary cores, respectively.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 14, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Young Joo Lee, Daniel J. Berry, Brian A. Welchko
  • Patent number: 9846002
    Abstract: A method for dynamically monitoring temperature of a fluid at a heat generating device includes monitoring, using a temperature sensor, temperature of the fluid held in a fluidic sump. A first fluidic flow rate and a second fluidic flow rate are determined. A third fluidic flow rate and a temperature drop of the fluid across the heat exchanger in the active coolant circuit are determined based upon the temperature of the fluid and the third fluidic flow rate through the active coolant circuit. A fluid temperature supplied to the electric machine through the active coolant circuit is determined based upon the third fluidic flow rate and the temperature drop of the fluid across the heat exchanger. An effective temperature of the fluid is determined based upon the temperature of the fluid in the sump and the temperature of the fluid supplied to the electric machine through the active coolant circuit.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: December 19, 2017
    Assignee: GM Global Technology Operations LLC
    Inventor: Daniel J. Berry
  • Publication number: 20170317615
    Abstract: A torque system includes a DC power device, a polyphase electric machine, a contactor pair, a power inverter module (PIM), and a controller. The PIM connects to the power device via the contactor pair and directly connects to the electric machine. The controller executes a method to control a fault response under a fault condition resulting in opening of the contactor pair and a polyphase short condition. The controller calculates a back EMF of the electric machine and transmits switching control signals to semiconductor switches of the PIM to transition from the polyphase short condition to a polyphase open condition only when the calculated back EMF is less than a calibrated value and a voltage rise on a DC side of the PIM is less than a calibrated voltage rise. A vehicle includes the DC power device, road wheels, electric machine, PIM, and controller.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 2, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Daniel J. Berry, Wei D. Wang, Bon Ho Bae, Brian A. Welchko, Wesley G. Zanardelli, Melissa R. McNeely
  • Publication number: 20160178548
    Abstract: A method for dynamically monitoring temperature of a fluid at a heat generating device includes monitoring, using a temperature sensor, temperature of the fluid held in a fluidic sump. A first fluidic flow rate and a second fluidic flow rate are determined. A third fluidic flow rate and a temperature drop of the fluid across the heat exchanger in the active coolant circuit are determined based upon the temperature of the fluid and the third fluidic flow rate through the active coolant circuit. A fluid temperature supplied to the electric machine through the active coolant circuit is determined based upon the third fluidic flow rate and the temperature drop of the fluid across the heat exchanger. An effective temperature of the fluid is determined based upon the temperature of the fluid in the sump and the temperature of the fluid supplied to the electric machine through the active coolant circuit.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 23, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Daniel J. Berry
  • Patent number: 9356551
    Abstract: An electric motor powers a fluidic pump fluidly connected to a hydraulic circuit. Operating the electric motor includes determining a heat transfer coefficient for the electric motor based upon a temperature of hydraulic fluid in the hydraulic circuit. A temperature of the electric motor is determined based upon the heat transfer coefficient. Operation of the electric motor is controlled based upon the temperature of the electric motor.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: May 31, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Daniel J. Berry, Paul F. Turnbull, Chia-Chou Yeh
  • Publication number: 20160023573
    Abstract: A method for operating an electric machine of a ground vehicle includes periodically determining an aging parameter based upon a temperature of the electric machine and periodically determining a short-term aging effect based upon the periodically determined aging parameter. A long-term aging effect is determined based upon the short-term aging effect. A short-term temperature adjustment is determined based upon the short-term aging effect and a long-term temperature adjustment is determined based upon the long-term aging effect. A temperature-based derated motor torque is determined based upon the long-term temperature adjustment and the short-term temperature adjustment. Operation of the electric machine is controlled responsive to an operator command for torque based upon the temperature-based derated motor torque.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 28, 2016
    Inventors: Paul F. Turnbull, Steven L. Hayslett, Harry J. Bauer, Daniel J. Berry, George D. Dolan
  • Patent number: 9242576
    Abstract: A method for operating an electric machine of a ground vehicle includes periodically determining an aging parameter based upon a temperature of the electric machine and periodically determining a short-term aging effect based upon the periodically determined aging parameter. A long-term aging effect is determined based upon the short-term aging effect. A short-term temperature adjustment is determined based upon the short-term aging effect and a long-term temperature adjustment is determined based upon the long-term aging effect. A temperature-based derated motor torque is determined based upon the long-term temperature adjustment and the short-term temperature adjustment. Operation of the electric machine is controlled responsive to an operator command for torque based upon the temperature-based derated motor torque.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: January 26, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul F. Turnbull, Steven L. Hayslett, Harry J. Bauer, Daniel J. Berry, George D. Dolan
  • Publication number: 20140276847
    Abstract: A kit for use in performing joint arthroplasty is provided. The kit (400) includes a trial (12) and a reamer (2). The reamer (2) is for preparing a cavity (4) in the intramedullary canal (8) of a long bone (8) with the use of a driver (10) and to assist in performing a trial reduction. The reamer (2) includes a first portion (14) for placement at least partially in the cavity (4) of the long bone (8) and a second portion (16) operably connected to the first portion (14). The reamer (2) is removably connected to the driver (10) to rotate the reamer (2). The trial (12) is removably attachable to the reamer (2).
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: DEPUY SYNTHES PRODUCTS, LLC
    Inventors: DAVID WAYNE DANIELS, CHARLES WESLEY JAGGERS, KIMBERLY ANN DWYER, DAVID WILLIAM MORROW, BRAD ALAN PARKER, DANIEL J. BERRY
  • Publication number: 20140210392
    Abstract: An electric motor powers a fluidic pump fluidly connected to a hydraulic circuit. Operating the electric motor includes determining a heat transfer coefficient for the electric motor based upon a temperature of hydraulic fluid in the hydraulic circuit. A temperature of the electric motor is determined based upon the heat transfer coefficient. Operation of the electric motor is controlled based upon the temperature of the electric motor.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: DANIEL J. BERRY, PAUL F. TURNBULL, CHIA-CHOU YEH
  • Patent number: 8790346
    Abstract: A kit (400) for use in performing joint arthroplasty is provided. The kit (400) includes a trial (12) and a reamer (2). The reamer (2) is for preparing a cavity (4) in the intramedullary canal (8) of a long bone (8) with the use of a driver (10) and to assist in performing a trial reduction. The reamer (2) includes a first portion (14) for placement at least partially in the cavity (4) of the long bone (8) and a second portion (16) operably connected to the first portion (14). The reamer (2) is removably connected to the driver (10) to rotate the reamer (2). The trial (12) is removably attachable to the reamer (2).
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 29, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventors: David Wayne Daniels, Charles Wesley Jaggers, Kimberly Ann Dwyer, David William Morrow, Brad Alan Parker, Daniel J. Berry
  • Patent number: 8762116
    Abstract: Methods and systems are provided for determining a temperature of a motor of a vehicle having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. An amount of time for which the vehicle had been turned off is determined. A motor temperature model is run using a time step to simulate the amount of time for which the vehicle had been turned off to determine an initial value of the temperature of the motor.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: June 24, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Chia-Chou Yeh, Steven E. Schulz, Daniel J. Berry
  • Patent number: 8565954
    Abstract: Methods, systems, and vehicles are provided pertaining to the determination of a temperature of a vehicle motor having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. A memory stores a function having a boundary condition that comprises a prior temperature from when the ignition was turned off. A processor is coupled to the memory. The processor is configured to determine an amount of time for which the ignition has been turned on and determine the temperature of the motor using the function if the amount of time for which the ignition has been turned on is less than a predetermined threshold.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: October 22, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Chia-Chou Yeh, Daniel J. Berry, Paul F. Turnbull
  • Patent number: 8482237
    Abstract: A vehicle includes a power source, a motor, and a computing device. The power source provides electrical energy to the motor, and the motor generates rotational motion from the electrical energy received. The computing device is configured to estimate a temperature of the motor in real time based at least in part on a thermal model of the motor. The thermal model includes a plurality of nodes and at least one thermal resistance. Each node represents a region of the motor and each thermal resistance represents a heat transfer path between at least two of the nodes. A method includes solving one or more energy balance equations to determine a temperature change at each node and estimating the temperature of the motor in real time based at least in part on the temperature change at each node and at least one of the thermal resistances in the thermal model.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: July 9, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Daniel J. Berry, Pankaj Mithal, Paul F. Turnbull, Peter J. Savagian, Chia-Chou Yeh, Steven E. Schulz
  • Publication number: 20130090791
    Abstract: Methods, systems, and vehicles are provided pertaining to the determination of a temperature of a vehicle motor having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. A memory stores a function having a boundary condition that comprises a prior temperature from when the ignition was turned off. A processor is coupled to the memory. The processor is configured to determine an amount of time for which the ignition has been turned on and determine the temperature of the motor using the function if the amount of time for which the ignition has been turned on is less than a predetermined threshold.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 11, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: CHIA-CHOU YEH, DANIEL J. BERRY, PAUL F. TURNBULL
  • Publication number: 20120271606
    Abstract: Methods and systems are provided for determining a temperature of a motor of a vehicle having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. An amount of time for which the vehicle had been turned off is determined. A motor temperature model is run using a time step to simulate the amount of time for which the vehicle had been turned off to determine an initial value of the temperature of the motor.
    Type: Application
    Filed: April 20, 2011
    Publication date: October 25, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chia-Chou YEH, Steven E. SCHULZ, Daniel J. BERRY