Patents Assigned to GLOBAL TECHNOLOGY OPERATIONS LLC
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Patent number: 11581841Abstract: An electrical system can include a rechargeable energy storage system (RESS) and a power inverter connected to the RESS. The power inverter can be configured to provide electrical power to a traction motor. The electrical system includes a plurality of machine windings connected between a plurality of first switches and the traction motor. Each switch of the plurality of first switches is configured to transition between a closed state to allow current flow between the power inverter and the traction motor. The electrical system includes a plurality of inductor windings connected between a plurality of second switches and an off-board power source. Each switch of the plurality of second switches is configured to transition between a closed state to allow current flow between the off-board power source and the power inverter to charge the RESS.Type: GrantFiled: March 22, 2021Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Rashmi Prasad, Chandra S. Namuduri
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Patent number: 11577624Abstract: A battery system includes at least one battery including a plurality of cells and a hybrid control module configured to monitor a differential capacity of the at least one battery, determine when the monitored differential capacity of the at least one battery corresponds to a predetermined differential capacity of the at least one battery, and determine a state of charge of the battery in response to the determination that the monitored differential capacity corresponds to the predetermined differential capacity.Type: GrantFiled: June 5, 2020Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Saad Hasan, Dave G. Rich
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Patent number: 11577616Abstract: In various embodiments, methods, systems, and vehicle apparatuses are provided. A method for implementing torque control using a Neural Network (NN) for a torque prediction model to receive a set of measured vehicle operating inputs associated with torque prediction; substituting a set of multiple independent variables into the torque prediction model so that the NN is then taking the form of a simplified pseudo-NN that contains a reduced variable set of one independent variable; processing, the set of measured vehicle operating inputs by the pseudo-NN based on the NN prediction model by using only one independent variable in a pseudo-NN's simplified mathematical expression; and solving for at least one root of the pseudo-NN's simplified mathematical expression by obtaining a root value without having to rely on an inversion operation of a mathematical expression that consists of an entire set of independent variables.Type: GrantFiled: October 27, 2020Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Dana J. Suttman
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Patent number: 11577285Abstract: A sensor lens assembly includes a cylindrical sensor body including a lower surface, a sensor lens surface, and a side surface extending between the lower surface and an outer edge of the sensor lens surface, a sensor enclosed within the cylindrical sensor body and adjacent to the sensor lens surface, and a nozzle configured to deliver a fluid near a center point of the sensor lens surface. The sensor lens surface is concave and rotates relative to the side surface of the cylindrical sensor body such that centrifugal force causes the fluid to form a film on the sensor lens surface that acts as a barrier, cushion, and particle collecting medium on the sensor lens surface.Type: GrantFiled: April 15, 2021Date of Patent: February 14, 2023Assignee: GM Global Technology Operations LLCInventors: Rachit Garg, Julien P. Mourou
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Patent number: 11579294Abstract: A vehicle, Lidar system and method of detecting an object is disclosed. The Lidar system includes a photonic chip having a laser, an on-chip frequency shifter, a combiner and a first set of photodetectors. The laser generates a transmitted light beam and an associated local oscillator beam within the photonic chip. The on-chip frequency shifter shifts a frequency of the local oscillator beam. The combiner combines a reflected light beam with the frequency-shifted local oscillator beam, wherein the reflected light beam is a reflection of the transmitted light beam from the object to generate a first electronic signal at the first set of photodetectors. A processor obtains a first measurement of a parameter of the object from the first electronic signal. The vehicle includes a navigation system for navigating the vehicle with respect to the object using at least the first measurement of the parameter.Type: GrantFiled: August 29, 2019Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Timothy J. Talty, Keyvan Sayyah, Michael Mulqueen, Richard Kremer
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Patent number: 11577707Abstract: Braking systems and methods for an autonomous vehicle are provided. Braking devices are associated with respective wheels of the autonomous vehicle. A hydraulic circuit is connected between a primary braking module (PBM) and the braking devices and connected between a secondary braking module (SBM) and the braking devices. One of a PBM electronic control unit and a SBM electronic control unit is configured to: in response to detecting a communications failure of the other braking module, apply a predetermined hydraulic pressure operation in the hydraulic circuit. The other of the PBM electronic control unit and the SBM electronic control unit is configured to identify, based on output from the at least one sensor, the predetermined hydraulic pressure operation being applied by the one of the PBM electronic control unit and the SBM electronic control unit, and select and execute a braking profile based thereon.Type: GrantFiled: October 24, 2019Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Mohsen Mehdizade, Edward T. Heil
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Patent number: 11577733Abstract: A system and method operate an autonomous vehicle. A sensor senses a road and an object. A processor determines, in a Cartesian reference frame, a representation of the road and a source point representative of the object, samples a first waypoint and a second waypoint from the representation of the road, determines a linear projection of the source point to a line connecting the first waypoint and the second waypoint, determines a first estimate of a longitudinal component of the source point in a road-based reference frame based on the linear projection, the first estimate being on a curve representing the road between the first waypoint and the second waypoint, determines a second estimate of the longitudinal component from the first estimate, determines a coordinate of the source point in the road-based reference frame from the second estimate and operates the vehicle with respect to the object using the coordinate.Type: GrantFiled: September 30, 2020Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Roi Reshef, Vlad Goldner, Yevgeni Shaphirov
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Patent number: 11581521Abstract: A lithium metal oxide (LMO) cathode includes a current collector having a length defining a first end and a second end, a width, and a first side and a second side, LMO active material applied to the first side and the second side of the current collector such that the LMO active material applied to each respective side of the current collector has an inner face contiguous with the current collector and an outer face, and a plurality of channels extending widthwise across the cathode within the LMO active material applied to the first and second sides. The LMO active material on each current collector side can have a thickness of about 100 ?m to about 400 ?m. The channels on the same side of the current collector can be spaced apart by 0.1 mm to 10 mm. The channels can have widths of 10 ?m to 60 ?m.Type: GrantFiled: June 24, 2020Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Meixian Wang, Raghunathan K, Niccolo Jimenez, Ion C. Halalay
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Patent number: 11582433Abstract: A system for measuring speckle contrast includes: a head up display (HUD) system configured to output a predetermined image and having a first pixels per degree (PPD); an imaging colorimeter: having a field of view; positioned such that the predetermined image is in the field of view; having a second PPD that is at least 2.2 times greater than the first PPD of the HUD system; and configured to capture an image including the predetermined image; and a speckle contrast module configured to determine a speckle contrast of the HUD system based on the image.Type: GrantFiled: April 15, 2021Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Kai-Han Chang, Thomas A. Seder
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Patent number: 11579340Abstract: A system includes a display. The display includes an array of LEDs covered by a transparent material. The array of LEDs includes a plurality of first, second, third, and fourth LEDs respectively configured to emit red, green, blue, and violet light. The red, green, and blue light from the first, second, and third LEDs is visible to human eye. Violet light from the fourth LEDs is invisible to human eye. The system includes a photocatalytic coating disposed on the transparent material. The photocatalytic coating includes a photo-catalyst responsive to ultraviolet radiation present in sunlight and to the violet light emitted by the fourth LEDs in the array of LEDs. The system includes a controller configured to selectively turn on the fourth LEDs to activate the photo-catalyst in the photocatalytic coating disposed on the transparent material.Type: GrantFiled: November 11, 2020Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Thomas A. Seder, James A. Carpenter, Kai-Han Chang, Gayatri V. Dadheech
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Patent number: 11577649Abstract: An active outside rear view system for a vehicle includes a support structure mounted to an exterior surface of the vehicle. A rear view device is movably affixed to the support structure. A linkage extends from a first end to a second end, where the first end of the linkage is movably affixed to an aerodynamic enclosure and the second end of the linkage is movably affixed to the support structure. An actuator is engaged with the linkage and moves the aerodynamic enclosure between at least a first position and a second position different from the first position. The aerodynamic enclosure is independently movable relative to the rear view device and the support structure. The aerodynamic first position and the second position provide differing aerodynamic characteristics to the active outside rear view system.Type: GrantFiled: August 25, 2020Date of Patent: February 14, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: David C. Caples
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Publication number: 20230044834Abstract: An inertial measurement unit including a support structure having rectangular cuboid configuration, a first sensor configured to detect a first angular rate wherein the first sensor is affixed to a first side of the support structure, a second sensor configured to detect a second angular rate wherein the second sensor is affixed to a second side of the support structure, a third sensor configured to detect a third angular rate wherein the third sensor is affixed to a third side of the support structure, a processor configured to generate an aggregate angular rate in response to the first angular rate, the second angular rate and the third angular rate, and a vehicle controller configured to control a vehicle in response to the aggregate angular rate.Type: ApplicationFiled: August 3, 2021Publication date: February 9, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Jace A. Mogill, Steven R. Abram, Curtis L. Hay
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Publication number: 20230045299Abstract: A torque generating system is described, and includes a fuel cell power device, a high-voltage battery, an electric drive unit, and a controller. The fuel cell power device has a non-linear power-temperature relationship that has a local temperature maxima at a first electric power level and a local temperature minima at a second electric power level. A first operating point of the fuel cell power device is less than the first electric power level, and a second operating point of the fuel cell power device is set at a third electric power level that is greater than the first electric power level, wherein the third electric power level generates a fuel cell temperature that is less than the local temperature maxima. The fuel cell power device is controlled to one of the first operating point or the second operating point to transfer electric power to the electric drive unit.Type: ApplicationFiled: July 29, 2021Publication date: February 9, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: William H. Pettit, Charles E. Freese, V, Balasubramanian Lakshmanan
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Publication number: 20230044492Abstract: An injection molded composite component includes a groove extending from a first surface of the composite component and a tubing material placed within the groove and formed integrally with the composite component such that the tubing material forms an integrated conduit on the first surface of the composite component.Type: ApplicationFiled: August 6, 2021Publication date: February 9, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Erik B. Golm, Venkateshwar R. Aitharaju, Xiaosong Huang
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Publication number: 20230038254Abstract: Suspension systems are provided where the lower control arm is allowed to separate from the engine cradle at prescribed conditions to deliver the proper wheel kinematics for select cases while maintaining structural integrity for all other load cases. A system includes a vehicle body structure, a wheel assembly, and a suspension system linking the wheel assembly to the engine cradle. The suspension system includes a link coupled with the engine cradle through a first joint and coupled with the wheel assembly through a second joint. The first joint is configured to release the link from the engine cradle under loads above a threshold force and above a threshold angle of the threshold force at the second joint, to provide the desired kinematics.Type: ApplicationFiled: August 4, 2021Publication date: February 9, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Sung-ling Twu, Ferdous M Z Ghazi, Fred M Marquardt, Zohir Molhem
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Publication number: 20230044344Abstract: Methods and systems are provided for controlling an autonomous vehicle. In one embodiment, a method includes: identifying, by a processor, at least one constraint on a longitudinal dimension of an upcoming road; defining, by the processor, constraint activation logic based on a type of the at least one constraint; performing, by the processor, the constraint activation logic to determine a state of the constraint to be at least one of active and inactive; when the state of the constraint is active, validating, by the processor, a motion plan of the autonomous vehicle based on the constraint; and selectively controlling the autonomous vehicle based on the validating of the motion plan.Type: ApplicationFiled: August 3, 2021Publication date: February 9, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Roi Reshef, Zahy Bnaya, Vlad Goldner
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Patent number: D978036Type: GrantFiled: August 26, 2021Date of Patent: February 14, 2023Assignee: GM Global Technology Operations LLCInventors: Hojun Choi, Minseon Park, Dongwan Jo
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Patent number: D978046Type: GrantFiled: March 23, 2021Date of Patent: February 14, 2023Assignee: GM Global Technology Operations LLCInventor: Ryan D. Skelley
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Patent number: D978047Type: GrantFiled: March 23, 2021Date of Patent: February 14, 2023Assignee: GM Global Technology Operations LLCInventor: Ryan D. Skelley
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Patent number: D978048Type: GrantFiled: March 24, 2021Date of Patent: February 14, 2023Assignee: GM Global Technology Operations LLCInventor: Zachary K Parkinson