Daniel A Berry

US Patent:

8482237, Jul 9, 2013

Filed:

Mar 3, 2011

Appl. No.:

13/039347

Inventors:

Daniel J. Berry - Macomb Township MI, US
Pankaj Mithal - Ann Arbor MI, US
Paul F. Turnbull - Canton MI, US
Peter J. Savagian - Bloomfield Hills MI, US
Steven E. Schulz - Torrance CA, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02H 7/08

US Classification:

318471, 318490, 318473, 703 2, 703 8, 374 45, 374102, 374103, 236 67, 236 71, 236 74 R

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.

US Patent:

8565954, Oct 22, 2013

Filed:

Oct 6, 2011

Appl. No.:

13/267755

Inventors:

Daniel J. Berry - Macomb Township MI, US
Paul F. Turnbull - Canton MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B60L 11/00
B60K 17/00
F16H 59/00
G06G 7/48

US Classification:

701 22, 180339, 477 98, 703 8

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.

US Patent:

20210099123, Apr 1, 2021

Filed:

Oct 1, 2019

Appl. No.:

16/589594

Inventors:

- Detroit MI, US
Daniel J. Berry - Macomb Township MI, US
Young J. Kim - Troy MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

H02P 29/66
H02P 27/06

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.

US Patent:

20210010832, Jan 14, 2021

Filed:

Jul 9, 2019

Appl. No.:

16/506387

Inventors:

- Detroit MI, US
Anno Yoo - Rochester MI, US
Milan A. Vadera - Rochester HIlls MI, US
Daniel J. Berry - Macomb Township MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

G01D 5/244
G01R 31/34

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.

US Patent:

20180165127, Jun 14, 2018

Filed:

Dec 13, 2016

Appl. No.:

15/376730

Inventors:

- Detroit MI, US
Daniel J. Berry - Macomb Township MI, US
Brian A. Welchko - Oakland MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

G06F 9/50
G06F 9/48

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.

US Patent:

20160178548, Jun 23, 2016

Filed:

Dec 18, 2014

Appl. No.:

14/574469

Inventors:

- Detroit MI, US
Daniel J. Berry - Macomb Township MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

G01N 25/00
F28F 27/00
G01K 13/02

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.

US Patent:

20160023573, Jan 28, 2016

Filed:

Jul 25, 2014

Appl. No.:

14/340642

Inventors:

- DETROIT MI, US
Steven L. Hayslett - Troy MI, US
Harry J. Bauer - Troy MI, US
Daniel J. Berry - Macomb Township MI, US
George D. Dolan - Pontiac MI, US

International Classification:

B60L 15/20

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.