Patents Assigned to GM
  • FILTERING AUTONOMOUS DRIVING SIMULATION SCENARIOS
    Publication number: 20240166236
    Abstract: A computer system for filtering autonomous driving scenarios for simulations includes circuitry and a graphical processing unit (GPU). The circuitry receives data encoding a first autonomous driving scenario, and generates a first embedding of the first autonomous driving scenario based on a model for transforming autonomous driving scenario data to an embedding. A GPU compares the first embedding to a test bank of embeddings representing other autonomous driving scenarios. If the first embedding has at least a threshold similarity to other embeddings in the test bank, the first autonomous driving scenario is discarded from a simulation pipeline for simulating autonomous driving scenarios.
    Type: Application
    Filed: November 17, 2022
    Publication date: May 23, 2024
    Applicant: GM Cruise Holdings LLC
    Inventors: Alessandro Iyra, Vivek Rangaswamy
  • SYSTEM AND METHOD TO PROTECT A PREFINISHED ROTOR JOURNAL OF A ROTOR DURING A MANUFACTURING PROCESS
    Publication number: 20240167506
    Abstract: A system for protecting a prefinished rotor journal of a rotor during a manufacturing process is provided. The system includes a manufacturing fixture. The fixture includes a plurality of supply lines providing a plurality of pressurized flows. The fixture further includes a plurality of static flow bearings configured for suspending the prefinished rotor journal between the plurality of static flow bearings without the prefinished rotor journal contacting the plurality of static flow bearings. Each of the static flow bearings includes a central duct receiving one of the plurality of pressurized flows. The central duct is configured for directing the one of the plurality of pressurized flows at the prefinished rotor journal.
    Type: Application
    Filed: November 22, 2022
    Publication date: May 23, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Joseph G. Lovasz, Scott A. Hucker, Shane E. Bremer
  • SYSTEM AND METHOD FOR VEHICLE BLUETOOTH PAIRING
    Publication number: 20240172301
    Abstract: A system for vehicle Bluetooth pairing is provided. The system includes a smartphone configured for Bluetooth communication. The system further includes a vehicle including a computerized pairing operation controller configured for Bluetooth communication. The computerized pairing operation controller includes programming to emit a notification signal detectable by the smartphone. The smartphone includes programming to establish proximity to the vehicle based upon the notification signal and establish a Bluetooth low energy connection to the vehicle based upon establishing the proximity. The computerizing pairing operation controller further includes programming to automatically set up a Bluetooth connection after the Bluetooth low energy connection is established.
    Type: Application
    Filed: November 17, 2022
    Publication date: May 23, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anurag Chelamchirayil Muraleedharan, Jarvis Chau
  • ONE-WAY SEGREGATION OF AV SUBSYSTEMS AND USER DEVICES
    Publication number: 20240171568
    Abstract: Malicious users (or hackers) can take advantage of user devices on or communicably connected to an autonomous vehicle (AV) to gain unauthorized access to AV subsystems (e.g., AV compute system, AV sensors, AV controls system, and AV cabin system). To address this concern, a one-way Ethernet communication link can be placed between the AV subsystems and the user devices. The one-way communication link can physically ensure that the user devices may only receive content from the AV systems, and that the user devices may not send data to the AV systems on the one-way communication link. A feature-limited backchannel that may be normally used for transporting audio data on a daisy-chained bus can be used by the user devices to transmit (8-bit) code words that correspond to specific messages to convey messages back to the AV systems.
    Type: Application
    Filed: November 21, 2022
    Publication date: May 23, 2024
    Applicant: GM Cruise Holdings LLC
    Inventors: Christopher Valasek, Charles Miller
  • Perception system with attention module for processing visual data
    Patent number: 11989947
    Abstract: A perception system is adapted to receive visual data from a camera and includes a controller having a processor and tangible, non-transitory memory on which instructions are recorded. A subsampling module, an object detection module and an attention module are each selectively executable by the controller. The controller is configured to sample an input image from the visual data to generate a rescaled whole image frame, via the subsampling module. The controller is configured to extract feature data from the rescaled whole image frame, via the object detection module. A region of interest in the rescaled whole image frame is identified, based on an output of the attention module. The controller is configured to generate a first image based on the rescaled whole image frame and a second image based on the region of interest, the second image having a higher resolution than the first image.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: May 21, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Shuqing Zeng, Jordan B. Chipka, Thanura R. Elvitigala
  • Systems and methods for determining whether a vehicle is in an understeer or oversteer situation
    Patent number: 11987252
    Abstract: Systems and methods for determining whether a vehicle is in an understeer or oversteer situation. The system includes a controller circuit coupled to an IMU and an EPS, and programmed to: calculate, for a steered first axle, an axle-based pneumatic trail for using IMU measurements and EPS signals and estimate a saturation level as a function of a distance between the axle-based pneumatic trail and zero. The system estimates, for an unsteered second axle, an axle lateral force curve with respect to a slip angle of the second axle, and a saturation level as a function of when the axle lateral force curve with respect to the slip angle transitions from positive values to negative values. The saturation level of the first axle and the second axle are integrated. The system determines that the vehicle is in an understeer or oversteer situation as a function of the integrated saturation levels.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Naser Mehrabi, Saurabh Kapoor, Seyedeh Asal Nahidi, SeyedAlireza Kasaiezadeh Mahabadi, James H Holbrook, Hualin Tan, Bakhtiar B Litkouhi
  • Methods and systems for camera to lidar alignment using road poles
    Patent number: 11989893
    Abstract: Systems and methods are provided for generating alignment parameters for processing data associated with a vehicle. In one embodiment, a method includes: receiving image data associated with an environment of the vehicle; receiving lidar data associated with the environment of the vehicle; processing, by a processor, the image data to determine data points associated with at least one pole identified within image data; processing, by the processor, the lidar data to determine data points associated with at least one pole identified within the lidar data; selectively storing the data points as data point pairs in a data buffer; iteratively processing, by the processor, the data point pairs with a plurality of perturbations to determine a transformation matrix; generating, by the processor, alignment data based on the transformation matrix; and processing future data based on the alignment parameters.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yousef Omar, Wende Zhang, Hao Yu
  • Linear time varying model predictive torque control
    Patent number: 11987132
    Abstract: A system for torque control of an electric motor in a motor vehicle includes a power inverter that delivers a current to the electric motor to regulate the torque of the electric motor and a model predictive control module that sends a three-phase voltage to the power inverter to control the operation of the power inverter.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yue-Yun Wang, Lei Hao, Suresh Gopalakrishnan
  • Current observer for current regulator of vehicle electric traction motor
    Patent number: 11987136
    Abstract: A system in a vehicle includes a current regulator to obtain current commands from a controller based on a torque input and provide voltage commands and an inverter to use the voltage commands from the current regulator and direct current (DC) supplied by a battery to provide alternating current (AC). An electric traction motor provides drive power to a transmission of the vehicle based on injection of the AC from the inverter. A current observer obtains measured input current signals based on the AC for a current control cycle and provides predicted current signals for a next control cycle to the current regulator using a model. The current observer includes a controller to check output of the model against the measured input current signals. The current observer tunes parameters of the controller and the model used to generate the predicted current signals based on the measured input current signals.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Vinod Chowdary Peddi, Muhammad Hussain Alvi, Lei Hao, Suresh Gopalakrishnan
  • Method to monitor wheel health and alignment using camera system for proactive vehicle maintenance
    Patent number: 11989926
    Abstract: In exemplary embodiments, methods and systems are provided that include or utilize one or more automotive equipped cameras and a processor. The one or more automotive equipped cameras are configured to be onboard a vehicle and to obtain camera images during operation of the vehicle, the camera images including a view of one or more wheels of the vehicle. The processor is coupled to the one or more cameras, and is configured to at least facilitate: processing the camera images; and determining one or more states of the one or more wheels, including an alignment thereof, a health thereof, or both, based on the processing of the camera images.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OEPRATIONS LLC
    Inventors: Sai Vishnu Aluru, Steffen P. Lindenthal, Sravan Daruri
  • Adaptive rationalizer for vehicle perception systems toward robust automated driving control
    Patent number: 11987251
    Abstract: A system includes a computing device. The computing device includes a processor and a memory, the memory including instructions such that the processor is configured to: transform vehicle dynamics data to corresponding roadway geometry data, calculate a rationalization value based on a difference between the roadway geometry data and map-based roadway geometry data, and determine whether to modify a vehicle state based on the rationalization value.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mohammadali Shahriari, Reza Zarringhalam, Haley Marie Dalzell, Khizar Ahmad Qureshi, Patrick Francis Pirrmann
  • Monotonic path tracking control for lane keeping and lane following
    Patent number: 11987241
    Abstract: An autonomous vehicle and a system and method for operating the autonomous vehicle. The system includes a sensor and a processor. A disturbance force or yaw moment is received on the autonomous vehicle. The sensor measures a position of the autonomous vehicle within a lane of a road with respect to road boundaries and lane markings. The processor is configured to resist an effect of a disturbance force or yaw moment received on the autonomous vehicle. The processor minimizes a tracking error between a path of the autonomous vehicle and an initial track lane, wherein resisting the effect creates an inflection point in the path of the autonomous vehicle, establishes a final track lane at a closer of a lateral position of the inflection point and a lane center to the initial track lane, and tracks the path to the final track lane.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jimmy Zhong Yan Lu, Mohammadali Shahriari, Reza Zarringhalam
  • Magnetic motion control
    Patent number: 11987090
    Abstract: A damping system includes a first magnetic damper pair mounted on a suspension system of a vehicle. The first magnetic damper pair includes a first magnet mounted on a first surface of a body of the vehicle and a second magnet mounted on a first moveable component of the suspension system coupled to a wheel of the vehicle. A sensor is mounted on the body of the vehicle or the wheel. A damping system control module is configured to receive, from the sensor, inputs indicative of a velocity and a displacement of the wheel relative to the body of the vehicle, calculate an amount of force to generate between the magnetic damper pair in a direction opposite a direction of movement of the wheel, and control supply of current to at least one of the first magnet and the second magnet to generate the calculated amount of force.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Savannah Theisen, Jeffrey L. Vogt
  • Method to increase local cooling rate and improve material properties in a low-pressure sand-casting head
    Patent number: 11986879
    Abstract: A low-pressure sand-casting system includes a sand-casting mold receiving a molten casting material to cast an automobile vehicle cylinder head. A port is created in the automobile vehicle cylinder head. A manifold port metal core assembly includes a metal core. A compressible material coating is applied on the manifold port core metal core.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Liang Wang, Qigui Wang, Dale A. Gerard, Steven L. Burkholder, Ronald C. Daul
  • Interference mitigation in an FMCW radar system
    Patent number: 11988766
    Abstract: Technologies are described herein that are configured to identity detections output by a frequency-modulated continuous-wave (FMCW) radar system that are caused by an interfering signal. The detections are detected as being caused by an interferer based upon numbers of detections assigned to bins in a velocity-direction histogram.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: May 21, 2024
    Assignee: GM CRUISE HOLDINGS LLC
    Inventor: Christoph Schwark
  • Plate-and-fin heat exchanger with fins having one or more bending points
    Patent number: 11988459
    Abstract: A core assembly for a plate-and-fin heat exchanger includes a pair of core plates and a heat-absorbing member disposed within the passageway that secures the pair of core plates together. The heat-absorbing member defines a plurality of fins that each include one or more bending points, and each bending point creates two points of contact between a core plate and the heat-absorbing member.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Seongchan Pack, Eric Allen Weir, Luca Peschini
  • Vehicle front lower fascia panel
    Patent number: D1027746
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Jinho Seo
  • Vehicle liftgate
    Patent number: D1027767
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Zhiqing Huang
  • Vehicle wheel
    Patent number: D1027782
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: David Gillespie
  • Vehicle taillamp
    Patent number: D1028304
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: May 21, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Feng Wang