Abstract: The concepts described herein provide a method, apparatus, and system for controlling an inverter by modifying duty cycles of the PWM control signals in a manner that achieves a minimum duration between consecutive switching events in the inverter, which serves to reduce common mode current in the bearing(s) of an attached rotary electric machine. To minimize the effect of additional current and voltage ripple into the system, the minimum switching duration is defined in relation to a modulation index and geometric location near the sector boundaries of the respective inverter voltage space vector diagram.
Type:
Grant
Filed:
December 23, 2022
Date of Patent:
November 19, 2024
Assignee:
GM Global Technology Operations LLC
Inventors:
Kerrie M. Spaven, Brent S. Gagas, Brian J. Gallert, Brian A. Welchko
Abstract: A method of retrieving a lost item from a compartment to an owner of the lost item is provided. The method comprises detecting the lost item in the compartment to define an item image of the lost item relative to the compartment, updating an inventory list of lost objects, and identifying at least one potential user of the lost item. The method further comprises providing notification to the at least one potential user and providing viewable access of the item image. The method further comprises verifying ownership of the lost item to define the owner of the lost item, determining a preferred pickup location for the owner, storing the lost item at the preferred location defining a stored item, and confirming identity of the owner for retrieval of the stored item at the preferred location. The method further comprises allowing access to the stored item from the preferred location.
Type:
Grant
Filed:
January 28, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Ke Liu, Jingyan Wan, Ron Hecht, Omer Tsimhoni
Abstract: A system for implementing a secure boot event includes a system on a chip (SoC). The SoC includes key hashes stored within one-time programmable memory. Each of the key hashes is configured for use with one of a plurality of candidate authentication key sets. The SoC further includes firmware stored within RAM. The firmware includes a secondary bootloader, a plurality of public keys, and corresponding signatures. The public keys and corresponding signatures are configured for use with one of the key sets. The SoC further includes a primary bootloader utilizing fuses stored within the programmable memory. The fuses activate a selected key hash based upon an ecosystem in which the system is to operate. The selected hash and a corresponding public key and signature define an active authentication key set. During the event, the primary bootloader utilizes the active authentication key set to authenticate a downloaded update to the firmware.
Abstract: A method is designed to provide platooning information using a multi-focal plane augmented reality display of a host vehicle. The method includes receiving platooning data from at least one of a plurality of remote vehicles. Each of the plurality of remote vehicle is part of a platoon. The platooning data includes locations, trajectories, and headways of each of the plurality of remote vehicles. The method further includes determining whether the platoon is within a predetermined distance from the host vehicle using the platooning data. Further, the method includes transmitting a command signal to the multi-focal plane augmented reality display of the host vehicle to display a virtual image on the multi-focal plane augmented reality display. The virtual image is indicative of a platooning action related to the platoon that is within the predetermined distance from the host vehicle.
Type:
Grant
Filed:
April 1, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Joseph Philip McLaine, Joseph F. Szczerba, John P. Weiss, Thomas A. Seder, Kai-Han Chang, Steven Landry
Abstract: A distributed learning system of a vehicle includes: a control module configured to: control a plant of the vehicle using a policy; send signals to a learning module including information on an impact of the control on the plant; and selectively control the plant using exploratory control; and the learning module, where the learning module is separate from the control module and is configured to selectively update the policy based on (a) the signals from the control module, (b) state parameters resulting from the control of the plant using the policy, and (c) performance feedback determined based on the control of the plant using the policy and the selective control of the plant using exploratory control, where the control module is configured to receive the exploratory control from the learning module.
Type:
Grant
Filed:
March 16, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Ibrahim Haskara, Bharatkumar Hegde, Chen-Fang Chang
Abstract: A vehicle includes a transmission that performs a method of operating a clutch of a vehicle. The vehicle includes the clutch, an actuator device and a processor. The actuator device includes a piston movable to operate the clutch. The processor is configured to receive a pressure signal indicative of a selected fluid pressure for operating the clutch, determine a position for the piston in the actuator device from the pressure signal, and move the piston to the position to operate the clutch at the selected fluid pressure.
Type:
Grant
Filed:
November 10, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Dongxu Li, Michael Ding, Bryan John Williams, Chunhao J. Lee, Zhen J. Zhang
Abstract: In exemplary embodiments, methods and systems are provided that include one or more underbody cameras and a processor for a vehicle. The underbody cameras are configured to obtain camera images under the vehicle. The processor is coupled to the one or more underbody cameras, and is configured to at least facilitate: performing image processing for the camera images; and determining a ride height, a measure of weight on the vehicle, or both, based on the camera images from the one or more underbody cameras and the processing thereof via the processor.
Type:
Grant
Filed:
December 8, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Steffen P Lindenthal, Avesta Goodarzi, Utkarsh Saini, Christopher Andrew Stanek
Abstract: A battery system includes a multi-cell rechargeable energy storage system (RESS) and an electronic controller configured to process RESS cell data. The controller is programmed with a battery cell open circuit voltage (OCV) versus state of charge (SOC) data table used to calculate a peak OCV movement for a representative battery cell at predetermined capacity and maximum discharge/charge rate. The controller is configured to acquire voltage data for one of the cells during active RESS cycling. The controller is also configured to pass the acquired voltage data through a first-order lag filter algorithm to generate an overpredicted OCV for the subject cell. The controller is additionally configured to determine an overpredicted SOC value for the subject cell in the data table using an OCV value from the overpredicted OCV. Furthermore, the controller is configured to regulate the RESS using the determined overpredicted SOC value for the subject cell.
Type:
Grant
Filed:
December 17, 2021
Date of Patent:
November 19, 2024
Assignee:
GM Global Technology Operations LLC
Inventors:
Jeffrey A. Bednar, Justin Bunnell, Xavier Camacho Tardi
Abstract: A door check system of a vehicle includes a door check assembly having a check body securable to a door of the vehicle, a check link extending through a check body opening of the check body and an adjustment mechanism positioned at a body of the vehicle. The adjustment mechanism includes a housing defining a housing opening, and an adjustment slide positioned in the housing opening and slidable moveable therein. The adjustment slide is secured to the check link. An adjustment feature is secured to the adjustment slide and extends through an adjustment slot in the housing. Moving the adjustment feature along the adjustment slot moves the adjustment slide in the housing opening to change an effective length of the check link.
Abstract: A fastener for attaching a first part and a second part includes a body comprising a first body portion, a second body portion, a flange arranged between the first body portion and the second body portion and extending radially outwardly from the body. A bore extends in an axial direction through the body and including an inner surface with threads. A plurality of splines extend radially outwardly from the second body portion and is configured to prevent rotation when the second body portion is inserted into an opening in the first part. An opening to the bore at the second body portion defines a concentric edge and an inclined plane extending from the concentric edge.
Type:
Grant
Filed:
March 8, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Michael C. Gaunt, Christopher J. Mielke
Abstract: A monitoring assembly for an electrochemical cell of a secondary lithium battery includes a porous sensory structure and a transducer. The porous sensory structure includes a sensory layer disposed on a major surface of a porous separator and a buffer layer disposed between the sensory layer and a facing surface of a negative electrode layer. The buffer layer electrically isolates the sensory layer from the facing surface of the negative electrode layer. The sensory layer includes an electrically conductive material and is configured to produce a response to an input signal or to a physical stimulus received within the electrochemical cell. The transducer is configured to process the response produced by the sensory layer to generate an output signal indicative of a diagnostic condition within the electrochemical cell.
Type:
Grant
Filed:
January 28, 2021
Date of Patent:
November 19, 2024
Assignee:
GM Global Technology Operations LLC
Inventors:
Jing Gao, Brian J. Koch, Gayatri V. Dadheech, Mark W. Verbrugge, Alok Warey, James R. Salvador, Robert D. Schmidt
Abstract: An immersion cooling system for a battery system includes a battery enclosure and G battery cell groups arranged in the battery enclosure. Each of the G battery cell groups include C battery cells, where G and C are integers greater than one. A plurality of dividers are arranged between each of the G battery cell groups. A gas manifold removes vent gases from each of the G battery cell groups.
Type:
Grant
Filed:
May 13, 2022
Date of Patent:
November 19, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Taeyoung Han, Ryan Patrick Hickey, Matthew Swift, Chih-hung Yen, William Yu Chen, Goro Tamai, Bahram Khalighi
Abstract: A phase modulated continuous wave (PMCW) multiple input multiple output (MIMO) radar system is described herein. The radar system is configured to compute range, velocity, and direction of arrival angle of objects relative to the radar system. The radar system includes several transmitting antennas and several receiving antennas, where selected transmitting antennas simultaneously transmit radar signals based on the same modulation signal. Per transmitting antenna, the transmissions are modulated with respective phase offsets on a per pulse repetition interval (PRI) basis. Hence, a coupling between phase shifts over PRI and transmitter positions is established. Effectively, then, each transmitting antenna is labeled with a velocity offset that corresponds to the phase rate of change assigned to the transmitting antenna. This approach is referred to herein as velocity-labeled multiplexing (VLM).
Type:
Grant
Filed:
November 24, 2021
Date of Patent:
November 19, 2024
Assignee:
GM CRUISE HOLDINGS LLC
Inventors:
Jorge Julio Jácome Muñoz, Andre Giere, Özlem Karaca, Johanna Gütlein-Holzer
Abstract: A fluidic coolant system for a fuel cell stack that includes a fluidic pump, a heat exchanger, and an ion exchange filter housing assembly is described. A fluidic outlet of the heat exchanger is fluidly coupled to the fluidic pump, and a fluidic inlet of the heat exchanger is fluidly coupled to the fuel cell stack. The fluidic pump is arranged to supply coolant from the heat exchanger to the fuel cell stack and the ion exchange filter housing assembly.