Abstract: An autonomous vehicle incorporating a multimodal multi-technique signal fusion system is described herein. The signal fusion system is configured to receive at least one sensor signal that is output by at least one sensor system (multimodal), such as at least one image sensor signal from at least one camera. The at least one sensor signal is provided to a plurality of object detector modules of different types (multi-technique), such as an absolute detector module and a relative activation detector module, that generate independent directives based on the at least one sensor signal. The independent directives are fused by a signal fusion module to output a fused directive for controlling the autonomous vehicle.
Abstract: A temperature-following layer may be applied to a surface of components within an internal combustion engine. The temperature-following layer follows the temperature swing of adjacent gases (for example, in a combustion chamber). The temperature-following layer may be applied directly to a substrate, or the temperature-following layer may be an outer layer of a multi-layer thermal barrier coating. The multi-layer thermal barrier coating may include, for example, an insulating layer, a sealing layer bonded to the insulating layer, and a porous temperature-following layer disposed on the sealing layer. The sealing layer is substantially non-permeable and configured to seal against the insulating layer.
Type:
Grant
Filed:
December 22, 2017
Date of Patent:
December 1, 2020
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Tobias A Schaedler, Sloan Smith, Christine M Lihn, Scott M Biesboer, Russell P Durrett, Peter P Andruskiewicz, IV
Abstract: An electrical connector includes first and second bodies, an electrical terminal, a shuttle, and a scannable code. The first body includes a wall and a bridge. The wall has an outward surface facing radially outward with respect to a mating axis, and an opposite inward surface defining a blind opening. The bridge extends lengthwise between opposite end portions each attached to the outward surface. The bridge and the outward surface define a through opening opened axially, and spaced radially outward from, the blind opening. The electrical terminal projects axially, is attached to the first body, and is revealed through the blind opening. The second body is axially received in the blind opening and mates with the first body. The shuttle is adapted to axially slide through the opening. The scannable code is secured to the shuttle, faces radially outward, and is concealed by the bridge when the connector is unmated.
Type:
Grant
Filed:
December 30, 2019
Date of Patent:
December 1, 2020
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Felipe De Jesus Davila Morales, Farid Arturo Quiroz Castilla, Moises Munoz Ramos, Ignacio Eduardo Tellez Giron Schroeder
Abstract: An automotive vehicle includes at least one actuator configured to control vehicle steering, shifting, acceleration, or braking, at least one sensor configured to provide signals indicative of road geometry in the vicinity of the vehicle, and a controller in communication with the sensor and the actuator. The controller is configured to selectively control the actuator in an autonomous driving mode based on signals from the sensor. The controller is configured to automatically determine a first time parameter based on a distance to a merge location between a current driving lane of the vehicle and a target lane adjacent the current driving lane in response to signals from the sensor, to automatically determine a second time parameter based on a calculated merge completion time, and to automatically discontinue autonomous control of the actuator based on a difference between the first time parameter and the second time parameter.
Type:
Grant
Filed:
November 26, 2018
Date of Patent:
December 1, 2020
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Kevin A. O'Dea, Sami Ahmed, Paul R. Williams
Abstract: A powertrain system includes a flex plate, a transmission input shaft, a torque coupling, a one-way clutch, and a damper assembly. The flex plate is configured to be connected to a crankshaft of an engine. The torque coupling connects the transmission input shaft to the flex plate while allowing slip between the transmission input shaft and the flex plate. The one-way clutch is configured to couple the flex plate to the torque coupling. The damper assembly couples the flex plate to the one-way clutch and is configured to inhibit vibration transmission from the flex plate to the one-way clutch.
Type:
Grant
Filed:
October 19, 2018
Date of Patent:
December 1, 2020
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Chunhao J. Lee, Farzad Samie, Derek F. Lahr, Norman K. Bucknor, Dongxu Li
Abstract: A radar system and method for calibrating a radar system, the method including the steps of: measuring a set of azimuth angles of the radar system to obtain a plurality of measured azimuth array responses, wherein the radar system is physically rotated about a first axis of the radar system between each azimuth angle measurement; measuring a set of elevation angles of the radar system to obtain a plurality of measured elevation array responses, wherein the radar system is physically rotated about a second axis of the radar system between each elevation angle measurement; obtaining an azimuth calibration matrix based on the plurality of measured azimuth array responses and an elevation calibration matrix based on the plurality of measured elevation array responses; and configuring the radar system to apply the azimuth calibration matrix and the elevation calibration matrix to one or more antenna array responses.
Type:
Grant
Filed:
July 30, 2018
Date of Patent:
December 1, 2020
Assignees:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, SILANTRIX LTD.
Abstract: A hybrid vehicle and a powertrain for a hybrid vehicle are disclosed. A hybrid powertrain may include an internal combustion engine configured to provide rotational power to a rotatable shaft in a first rotational direction, and an electric motor-generator configured to selectively provide rotational power to a rotational output. The motor-generator may include a rotor fixed for rotation with the rotational output. The powertrain may further include an engine disconnect device comprising a mechanical clutch linking the rotatable shaft with the rotational output. More specifically, the rotatable shaft may drive the rotational output in the first rotational direction, and the rotational output may freewheel with respect to the rotatable shaft when rotating faster in the first rotational direction than the rotatable shaft.
Abstract: A friction clutch assembly for an automatic transmission, a friction clutch plate, and a method of forming a friction clutch plate are provided. The method includes providing a friction material layer for a face of the friction clutch plate and cutting the friction material layer with a laser beam to form a plurality of grooves within the friction material layer. In one version, a friction plate for the friction clutch assembly includes an annular core plate having first and second opposed faces and defining an outer edge and an inner edge. Friction material is affixed to at least one of the first and second opposed faces. The friction material defines a plurality of grooves within the friction material, each groove being bordered by friction material having a ridge. The cross-section of the ridge has a corner having a radius of curvature that is less than 300 microns.
Abstract: A vehicle electronics high-resistance fault diagnosis system is provided, as well as a method of detecting and isolating a high-resistance fault in vehicle electronics of a vehicle. The method includes the steps of determining electrical data for one or more portions of the vehicle electronics, wherein the electrical data includes voltage data and/or current data concerning the one or more portions of the vehicle electronics; calculating a resistance for a plurality of resistance sets of the vehicle electronics based on the electrical data, wherein each of the plurality of resistance sets includes one or more electrical components; obtaining a resistance set threshold for each of the plurality of resistance sets of the vehicle electronics; for each of the plurality of resistance sets, evaluating whether the resistance of the resistance set exceeds the resistance set threshold; and based on the evaluating step, identifying one or more high-resistance fault candidates.
Abstract: A connection member includes a first side and a second side opposite the first side. The connection member also includes a third side connecting the first and second sides, the third side including a first portion, a second portion, and a third portion, a first edge separating the first portion from the second portion and a second edge separating the second portion from the third portion. A first flange extends along the first edge and a second flange extends along the second edge such that the first and second flanges are separated by the second portion.
Type:
Application
Filed:
May 24, 2019
Publication date:
November 26, 2020
Applicant:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Robert M. Kielbik, Robert N. Saje, John J. Jackson
Abstract: Operation of a vehicle that includes an autonomous operating system including an on-board map database includes operating in a travel lane employing a lane keeping control system and an adaptive cruise control system and monitoring a plurality of lane reference markers. Periodically, parameters are determined, including a first lateral offset for the vehicle based upon a forward-monitoring sensor and one of the lane reference markers, and a second lateral offset for the vehicle based upon a GPS sensor and the map database. A difference and an associated variance are determined, and an error in the map database is determined when the variance is greater than a threshold variance. The vehicle operator is alerted to actively control the vehicle based upon the detected error in the map database.
Type:
Application
Filed:
May 23, 2019
Publication date:
November 26, 2020
Applicant:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Xiaofeng F. Song, Nikhil L. Hoskeri, Quan Zhang
Abstract: A transparent sheet is provided, and includes a heatable element arranged to transfer heat energy to the transparent sheet, a strain gage transducer disposed on the transparent sheet, and a temperature sensor disposed on the transparent sheet. A controller is in communication with the strain gage transducer and the temperature sensor, and is operably connected to the heatable element. The controller is operative to control the heatable element based upon signal inputs from the strain gage and the temperature sensor.
Abstract: Example methods and systems for treating exhaust from an internal combustion engine may generally determine a catalytic converter in an exhaust system is at least partially deactivated by detecting an elevated exhaust temperature and a lean-burn operating condition. In response, a deactivation level of the catalytic converter may be determined, which may be compared with a threshold deactivation level. A magnitude of a temporary rich-fuel operating condition as a response may be determined based upon the comparison. The catalytic converter may be reactivated with the temporary rich-fuel operating condition.
Type:
Grant
Filed:
June 14, 2019
Date of Patent:
November 24, 2020
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Andrea Pannuzzo, Giuseppe Previtero, Isadora Ricci, Stefano Cantore
Abstract: Various technologies described herein pertain to controlling an autonomous vehicle to suppress data corresponding to predefined static objects in a radar output generated by a radar sensor system. A computing system of the autonomous vehicle retrieves prior data for a geographic location from a prior radar space map. The prior radar space map includes prior data for geographic locations in an environment corresponding to whether predefined static objects to be suppressed in radar outputs are located at the geographic locations. The computing system generates a score representative of a likelihood of a tracked object being at the geographic location based on data from the radar output for the geographic location, data from an output of a second sensor system for the geographic location, and the prior data for the geographic location from the prior radar space map. An engine, braking system, and/or steering system are controlled based on the score.
Abstract: Systems and methods are provided autonomous driving policy generation. The system can include a set of autonomous driver agents, and a driving policy generation module that includes a set of driving policy learner modules for generating and improving policies based on the collective experiences collected by the driver agents. The driver agents can collect driving experiences to create a knowledge base. The driving policy learner modules can process the collective driving experiences to extract driving policies. The driver agents can be trained via the driving policy learner modules in a parallel and distributed manner to find novel and efficient driving policies and behaviors faster and more efficiently. Parallel and distributed learning can enable accelerated training of multiple autonomous intelligent driver agents.
Abstract: A processor-implemented method and a controller in a vehicle for estimating a wireless channel impulse response in a mobile environment are provided. The method comprises: receiving an orthogonal frequency-division multiplexing (OFDM) signal; applying a maximum likelihood estimator to the received OFDM signal to identify a data symbol that provides a smooth channel response; and estimating the channel impulse response by performing a division or reverse convolution operation between the received OFDM signal and the identified data symbol. The controller is configured to: receive an OFDM signal; apply a maximum likelihood estimator to the received OFDM signal to identify a data symbol that provides a smooth channel response; and estimate the channel impulse response by performing a division or reverse convolution operation between the received OFDM signal and the identified data symbol. The vehicle can use the estimated channel impulse response to decode data symbols from future instances of the OFDM signal.
Type:
Grant
Filed:
September 9, 2019
Date of Patent:
November 24, 2020
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Xi Ju, Timothy J. Talty, Fan Bai, Dan Shan