Patents by Inventor Carlos E. Arreaza
Carlos E. Arreaza has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230133525Abstract: A platoon of electric pallets (e-pallets) includes a follower e-pallet connected to or in wireless communication with a leader e-pallet. The platoon also includes a sensor suite, road wheels, an electric powertrain system, and a local controller. The sensor suite includes a velocity sensor configured to measure a velocity of the follower e-pallet, an angle sensor configured to measure an azimuth angle between the follower and leader e-pallets, and a length or distance sensor configured to measure a distance therebetween. The local controller executes a method to adaptively move a variable target point (VTP) on the leader pallet in response to the velocity, the azimuth angle, and the length, and to thereafter control a dynamic output state of the electric powertrain system using the VTP.Type: ApplicationFiled: November 1, 2021Publication date: May 4, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Hojjat Izadi, Carlos E. Arreaza, Mohammad-Amin Rajaie, Mohammad H. Beheshti
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Publication number: 20230125809Abstract: An electronic pallet (e-pallet) includes a superstructure mounted to a wheeled base platform. A tether device defines an articulation angle with respect to a leading edge of the superstructure, and is grasped by an operator towing the e-pallet. A motor connected to driven road wheels transmits a drive torque to the road wheels responsive to motor control signals, including a desired yaw rate and ground speed. A speed sensor, angle sensor, and length sensor are respectively configured to determine an actual ground speed of the e-pallet, the articulation angle, and a length of the tether device. An electronic controller, in response to the input signals, generates the motor control signals using proportional-integral-derivative (PID) control logic. Coupled lateral and longitudinal dynamics control loops respectively determine the desired yaw rate and ground speed to accommodate for motion of the operator.Type: ApplicationFiled: October 27, 2021Publication date: April 27, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Hojjat Izadi, Carlos E. Arreaza, Mohammad-Amin Rajaie
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Patent number: 11634128Abstract: Methods and systems are provided for a vehicle towing a trailer within a lane of a roadway that include: reconstructing, via a processor onboard the vehicle, lane markings for the trailer using lane markers as sensed via camera data; transforming the reconstructed lane markings, using additional sensor data, to a perspective of the trailer; localizing the trailer within the transformed lane markers using historical camera lane marking information, articulated vehicle dynamics, hitch angle, and trailer dimensions, without needing to add additional trailer lane sensing cameras to the trailer; calculating a time to lane crossing (T-TTLC) value for the trailer and vehicle; generating candidate blended paths of the trailer and the vehicle with a centerline of the lane of the roadway; and controlling operation of the vehicle, the trailer, or both, via instructions provided by the processor to keep the vehicle, the trailer, or both within a lane of travel.Type: GrantFiled: March 8, 2021Date of Patent: April 25, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Reza Zarringhalam, Amir Takhmar, Carlos E. Arreaza, Shiv G. Patel, Mohammed Raju Hossain, Dorothy Lui, Kibrom Yohannes
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Patent number: 11465623Abstract: Systems and methods for reversing a semi-autonomous follower vehicle involve obtaining a speed of a leader vehicle in front of and unattached to the follower vehicle that is reversing. A method includes estimating a path of the leader vehicle and determining a path for the follower vehicle based on the path of the leader vehicle. A longitudinal movement of the follower vehicle is controlled based on the speed of the leader vehicle and a lateral movement of the follower vehicle is controlled based on the path for the follower vehicle.Type: GrantFiled: November 3, 2020Date of Patent: October 11, 2022Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Carlos E. Arreaza, Hojjat Izadi
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Publication number: 20220281448Abstract: Methods and systems are provided for a vehicle towing a trailer within a lane of a roadway that include: reconstructing, via a processor onboard the vehicle, lane markings for the trailer using lane markers as sensed via camera data; transforming the reconstructed lane markings, using additional sensor data, to a perspective of the trailer; localizing the trailer within the transformed lane markers using historical camera lane marking information, articulated vehicle dynamics, hitch angle, and trailer dimensions, without needing to add additional trailer lane sensing cameras to the trailer; calculating a time to lane crossing (T-TTLC) value for the trailer and vehicle; generating candidate blended paths of the trailer and the vehicle with a centerline of the lane of the roadway; and controlling operation of the vehicle, the trailer, or both, via instructions provided by the processor to keep the vehicle, the trailer, or both within a lane of travel.Type: ApplicationFiled: March 8, 2021Publication date: September 8, 2022Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Reza Zarringhalam, Amir Takhmar, Carlos E. Arreaza, Shiv G. Patel, Mohammed Raju Hossain, Dorothy Lui, Kibrom Yohannes
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Publication number: 20220135126Abstract: A towing configuration includes a tow vehicle and a trailer. Trailer tracking is controlled to a path of travel by an active rear steering system on the tow vehicle. The path of travel may correspond to a path traversed by the tow vehicle.Type: ApplicationFiled: November 5, 2020Publication date: May 5, 2022Inventors: Carlos E. Arreaza, Hojjat Izadi
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Publication number: 20220135037Abstract: Systems and methods for reversing a semi-autonomous follower vehicle involve obtaining a speed of a leader vehicle in front of and unattached to the follower vehicle that is reversing. A method includes estimating a path of the leader vehicle and determining a path for the follower vehicle based on the path of the leader vehicle. A longitudinal movement of the follower vehicle is controlled based on the speed of the leader vehicle and a lateral movement of the follower vehicle is controlled based on the path for the follower vehicle.Type: ApplicationFiled: November 3, 2020Publication date: May 5, 2022Inventors: Carlos E. Arreaza, Hojjat Izadi
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Publication number: 20220126817Abstract: Systems and methods to park a semi-autonomous follower vehicle involve performing path planning to determine a path from a current location of the follower vehicle to a parking space, and controlling longitudinal movement of the follower vehicle using an accelerator control mechanism and a brake control mechanism operated by a driver of a leader vehicle that is not physically coupled to the follower vehicle. The accelerator control mechanism includes a pedal, knob, or lever and the brake control mechanism includes a pedal, knob, or lever. Lateral movement of the follower vehicle is controlled in order to follow the path to the parking space.Type: ApplicationFiled: October 26, 2020Publication date: April 28, 2022Inventors: Carlos E. Arreaza, Hojjat Izadi, Fred W. Huntzicker
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Patent number: 11209301Abstract: A method of determining a volume of a fluid in a reservoir arranged in a vehicle includes assessing, via a controller, whether a first sensor operatively connected to the reservoir and configured to detect a predetermined level of the fluid in the reservoir has been triggered. The method also includes detecting, via a second sensor, a vehicle operative state indicative of inclination of a free surface of the fluid in the reservoir. The method additionally includes communicating, via the second sensor, the detected vehicle operative state to the electronic controller and determining a degree of inclination of the free surface of the fluid in response to the detected vehicle operative state. Furthermore, the method includes determining, via the controller, the volume of the fluid in the reservoir when the first sensor has been triggered in response to the determined degree of inclination of the free surface of the fluid.Type: GrantFiled: April 12, 2019Date of Patent: December 28, 2021Assignee: GM Global Technology Operations LLCInventors: Carlos E. Arreaza, Joseph K. Moore, Tyler J. Jamieson, David C. Cochrane
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Publication number: 20200326221Abstract: A method of determining a volume of a fluid in a reservoir arranged in a vehicle includes assessing, via a controller, whether a first sensor operatively connected to the reservoir and configured to detect a predetermined level of the fluid in the reservoir has been triggered. The method also includes detecting, via a second sensor, a vehicle operative state indicative of inclination of a free surface of the fluid in the reservoir. The method additionally includes communicating, via the second sensor, the detected vehicle operative state to the electronic controller and determining a degree of inclination of the free surface of the fluid in response to the detected vehicle operative state. Furthermore, the method includes determining, via the controller, the volume of the fluid in the reservoir when the first sensor has been triggered in response to the determined degree of inclination of the free surface of the fluid.Type: ApplicationFiled: April 12, 2019Publication date: October 15, 2020Applicant: GM Global Technology Operations LLCInventors: Carlos E. Arreaza, Joseph K. Moore, Tyler J. Jamieson, David C. Cochrane
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Publication number: 20200041304Abstract: A method for producing high resolution virtual wheel speed sensor data includes simultaneously collecting wheel speed sensor (WSS) data from multiple wheel speed sensors each sensing rotation of one of multiple wheels of an automobile vehicle. A camera image is generated of a vehicle environment from at least one camera mounted in the automobile vehicle. An optical flow program is applied to discretize the camera image in pixels. Multiple distance intervals are overlayed onto the discretized camera image each representing a vehicle distance traveled defining a resolution of each of the multiple wheel speed sensors. A probability distribution function is created predicting a distance traveled for a next WSS output.Type: ApplicationFiled: July 31, 2018Publication date: February 6, 2020Inventors: Carlos E. Arreaza, Amin Abdossalami, Norman J. Weigert, Daniel S. Maitlen, David M. Sidlosky