Abstract: Presented are control systems for operating dual-independent drive unit (DIDU) powertrains, methods for making/operating such systems, and electric-drive vehicles with fault management and mitigation for DIDU axles. A method of operating a motor vehicle with a DIDU axle includes monitoring first and second drive units (DU) that are independently operable to drive respective road wheels via respective axle shafts of the DIDU axle. A vehicle controller receives an indication of a fault condition in the first DU from a fault sensing module and responsively determines a fault type for the fault condition. The controller ascertains the vehicle's current speed and determines a respective torque limit for each of the DIDU drive units based on the fault type and current vehicle speed. Torque output of the first DU is concomitantly constrained to a first torque limit while torque output of the second DU is constrained to a second torque limit.
Type:
Grant
Filed:
March 15, 2021
Date of Patent:
October 22, 2024
Assignee:
GM Global Technology Operations LLC
Inventors:
Aubrey W. Downs, Jr., Christopher L Jones, James M. Faucett, Yiran Hu, Ruixing Long, Brent S. Gagas, Wei Wang
Abstract: Vehicles and related systems and methods are provided for controlling a vehicle in an autonomous operating mode. One method involves identifying one or more avoidance zones in a vicinity of the vehicle, determining a deadline for completing a lateral maneuver to avoid a priority avoidance zone of the one or more avoidance zones, obtaining an initial reference lateral trajectory for the lateral maneuver based at least in part on the deadline, autonomously operating one or more actuators onboard the vehicle in accordance with the initial reference lateral trajectory, and thereafter obtaining one or more updated reference lateral trajectories for the vehicle, wherein the one or more actuators onboard the vehicle are autonomously operated in accordance with the one or more updated reference lateral trajectories in lieu of the initial reference lateral trajectory.
Type:
Grant
Filed:
April 20, 2022
Date of Patent:
October 22, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Tetyana V Mamchuk, Paul A Adam, Christopher Michael Churay
Abstract: A control system for a rotary electric machine includes an inverter including a plurality of power switches, a heat exchanger, first temperature sensors arranged to monitor the power switches, a second temperature sensor arranged to monitor the heat exchanger, and a controller. An expected power loss is determined based upon electric current, switching functions, and electrical characteristics of the power switches. A plurality of power capacity terms are determined based upon the expected power loss in the inverter, the temperatures of the power switches, and the temperature of the heat exchanger. The inverter is controlled based upon the aforementioned power capacities.
Type:
Grant
Filed:
October 24, 2022
Date of Patent:
October 22, 2024
Assignee:
GM Global Technology Operations LLC
Inventors:
Tanvi Nagarale, Brent S. Gagas, Brian A. Welchko
Abstract: A system for bandwidth saving for wireless cameras using motion vectors includes wireless cameras disposed within the vehicle, and capturing input image data. A control module, having a processor, memory, and input/output (I/O) ports, executes control logic stored in memory. A first control logic receives, real-time input image data from the cameras. A second control logic processes the input image data to maintain (Wi-Fi) bandwidth utilization within the vehicle below a predetermined threshold and maintains and maximizes real-time image data streaming quality through semantic segmentation and background memorization. A third control logic generates an output including background and foreground image portions. The output is transmitted to a human-machine interface (HMI) within the vehicle and periodically replaces the background portion with a cached background scene that is transmitted to the HMI.
Type:
Grant
Filed:
January 24, 2023
Date of Patent:
October 22, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Chuan Li, Jace C. Stokes, Sushama K. Mithapally, Fan Bai
Abstract: A separator for a lithium-containing electrochemical cell is provided herein. The separator includes a porous substrate having a first side and an opposing second side and a coating layer disposed adjacent to at least the first side of the porous substrate. The coating layer includes three-dimensionally (3D) ordered porous ceramic particles. An electrochemical cell including such a separator is also provided herein. The electrochemical cell may or may not include a negative electrode.
Abstract: A human machine interface (HMI) within a vehicle includes a display screen adapted to display information to an occupant within the vehicle, a track extending along at least a portion of a peripheral edge of the display screen, and a rotary control knob assembly slidably supported within the track for sliding movement within the track, wherein, the rotary control knob assembly is adapted to allow the occupant of the vehicle to provide input to the HMI to control a selected one of a plurality of systems within the vehicle, the selected one of the plurality of systems determined by a position of the rotary control knob assembly within the track.
Abstract: A fault tolerant distributed computing system includes a communication link and a plurality of nodes in electronic communication with one another by the communication link. Each node executes at least one node-specific application, includes a standby database that stores a standby copy corresponding to one of the node-specific applications executed by one of the remaining nodes that are part of the distributed computing system, and includes a spare computational capacity sufficient to execute at least one standby copy of one of the node-specific applications stored in the standby database. In response to determining a specific node is non-operational, the remaining nodes execute all the standby copies of the one or more node-specific applications that were previously executed by the specific node that is now non-operational.
Type:
Grant
Filed:
July 11, 2023
Date of Patent:
October 22, 2024
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Markus Jochim, Khaja Shazzad, Yuchen Zhou