Patents by Inventor Amir Khajepour

Amir Khajepour 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).

  • Publication number: 20220324266
    Abstract: A method for determining a tire tread wear estimation of a tire includes receiving, by a controller, a direct tire tread wear measurement, when available, performing an indirect tire tread wear estimation, performing a data fusion of the indirect tire tread wear estimation with the direct tire tread wear measurement when available, estimating a percentage tire life remaining and a mileage to end of tire life, and estimating a refined tire tread wear calibration coefficient for performing future indirect tire tread wear estimations.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 13, 2022
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, University of Waterloo
    Inventors: Mansoor Alghooneh, Joseph K. Moore, Christopher J. Mettrick, Gregory P. Kakert, Amir Khajepour, Amin Habibnejad Korayem, Yechen Qin, Ehsan Hashemi
  • Publication number: 20220266715
    Abstract: The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for translating the mechanical motions or actions of the dolly into electricity or electrical energy so that this energy can be used to charge a battery or to power other functionality for either the dolly or the tractor-trailer. The active dolly may also operate to assist in shunting the tractor-trailer. The active dolly is operable in a number of modes to increase vehicle performance and efficiency.
    Type: Application
    Filed: March 14, 2022
    Publication date: August 25, 2022
    Inventors: Brian Layfield, Amir Khajepour, Brian Fan, John Loewen
  • Publication number: 20220219319
    Abstract: A method and system for a mobile configurable robot for use in a large workspace including a set of base fixtures located around a perimeter of the large workspace and a moving platform. Each base fixture and the moving platform is connected via a two-arm boom system whereby the two-arm boom system is controlled by a set of actuators.
    Type: Application
    Filed: June 1, 2020
    Publication date: July 14, 2022
    Inventors: Amir KHAJEPOUR, Hamed JAMSHIDIFAR
  • Publication number: 20220162043
    Abstract: The disclosure is directed at a robotic platform for use in large workspaces. The disclosure includes a moving platform that is controlled by a set of cable actuators via a set of cables. The cables are also connected to at least one of a counterbalancing and/or a counterweight system to reduce the impact of forces being experienced on the moving platform on the set of cable actuators. In one embodiment, at least two of the set of cable actuators are connected with a single closed cable loop.
    Type: Application
    Filed: April 1, 2020
    Publication date: May 26, 2022
    Inventors: Amir KHAJEPOUR, Hamed JAMSHIDIFAR
  • Patent number: 11279255
    Abstract: The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for translating the mechanical motions or actions of the dolly into electricity or electrical energy so that this energy can be used to charge a battery or to power other functionality for either the dolly or the tractor-trailer. The active dolly may also operate to assist in shunting the tractor-trailer. The active dolly is operable in a number of modes to increase vehicle performance and efficiency.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: March 22, 2022
    Assignee: ISABREM LTD.
    Inventors: Brian Layfield, Amir Khajepour, Brian Fan, John Loewen
  • Publication number: 20220049665
    Abstract: A method and system for anti-idling management for a vehicle including an anti-idling system (AIS) is disclosed. Based on inputs from different sources associated with the vehicle, the AIS determines when anti-idling management should be enabled in order to control the engine of the vehicle. In some embodiments, the AIS includes an AIS battery that can be used to power auxiliary vehicle components when the vehicle is stopped via anti-idling control management.
    Type: Application
    Filed: September 10, 2019
    Publication date: February 17, 2022
    Inventors: Amir KHAJEPOUR, Rhyse MARYNIUK, Yanjun HUANG, Soheil FARD, Milad KHAZRAEE
  • Patent number: 11046323
    Abstract: A method for estimation of a vehicle tire force includes: receiving, by a controller of a vehicle, a measured vehicle acceleration of the vehicle; receiving, by the controller, a measured wheel speed and a measured yaw rate of the vehicle; forming, by the controller, inertia matrices based on an inertia of rotating components of the vehicle; calculating torques at corners of the vehicle using the inertia matrices; estimating tire forces of the vehicle based on the measured vehicle acceleration, the measured wheel speed, and the inertia matrices; and controlling, by the controller, the vehicle, based on the plurality of estimated longitudinal and lateral tire forces.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: June 29, 2021
    Assignees: GM Global Technology Operations LLC, University of Waterloo
    Inventors: Ehsan Hashemi, SeyedAlireza Kasaiezadeh Mahabadi, Amir Khajepour, Xueying Kang, Jin-Jae Chen, Hualin Tan, James H. Holbrook, Bakhtiar B. Litkouhi
  • Patent number: 10941024
    Abstract: A system and apparatus for controlling a mobile platform via cables is disclosed. Each of the set of cables are connected at one end to the platform at a second end to a cable controlling mechanism, the cable controlling mechanism including a motor to control a length and tension of the cable. At least two of the cables form a constraint, such as a kinematic constraint to the apparatus in order to limit the movement of the platform in certain degrees of freedom.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: March 9, 2021
    Inventor: Amir Khajepour
  • Patent number: 10914357
    Abstract: The disclosure is directed at a method and apparatus for controlling unwanted vibrations in a mechanical system. The apparatus includes a set of different eccentric and/or concentric masses mounted to the mechanical system for generating forces to counteract the sensed unwanted vibrations. The apparatus further includes a set of motors that control movement of the set of masses.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: February 9, 2021
    Inventor: Amir Khajepour
  • Patent number: 10816491
    Abstract: The disclosure is directed at a method and apparatus for integrated real-time monitoring and control of microstructure and/or geometry in thermal material processing (TMP) technologies. The method includes obtaining real-time thermal dynamic variables, such as, but not limited to the cooling rate, peak temperature and heating rate, and geometry of the thermal material process. These real-time thermal variables are then analyzed along with a thermal model to determine a microstructure/geometry model. This microstructure/geometry model can then be used to provide the real-time monitoring and control of a finished state for the material being processed by the thermal material processing procedure.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 27, 2020
    Inventors: Amir Khajepour, Mohammad Hossein Farshidianfar, Adrian Gerlich
  • Publication number: 20200317198
    Abstract: A method for estimation of a vehicle tire force includes: receiving, by a controller of a vehicle, a measured vehicle acceleration of the vehicle; receiving, by the controller, a measured wheel speed and a measured yaw rate of the vehicle; forming, by the controller, inertia matrices based on an inertia of rotating components of the vehicle; calculating torques at corners of the vehicle using the inertia matrices; estimating tire forces of the vehicle based on the measured vehicle acceleration, the measured wheel speed, and the inertia matrices; and controlling, by the controller, the vehicle, based on the plurality of estimated longitudinal and lateral tire forces.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 8, 2020
    Applicants: GM Global Technology Operations LLC, University of Waterloo
    Inventors: Ehsan Hashemi, SeyedAlireza Kasaiezadeh Mahabadi, Amir Khajepour, Xueying Kang, Jin-Jae Chen, Hualin Tan, James H. Holbrook, Bakhtiar B. Litkouhi
  • Publication number: 20200122715
    Abstract: The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for translating the mechanical motions or actions of the dolly into electricity or electrical energy so that this energy can be used to charge a battery or to power other functionality for either the dolly or the tractor-trailer. The active dolly may also operate to assist in shunting the tractor-trailer. The active dolly is operable in a number of modes to increase vehicle performance and efficiency.
    Type: Application
    Filed: May 30, 2018
    Publication date: April 23, 2020
    Inventors: Brian Layfield, Amir Khajepour, Brian Fan, John Loewen
  • Patent number: 10204461
    Abstract: Methods and systems are provided for detecting faults in a sensor and reconstructing an output signal without use of the faulty sensor. In one embodiment, a method includes: receiving, by a processor, sensor data indicating a measured value from a first sensor; receiving, by a processor, sensor data indicating measured values from a plurality of other sensors; computing, by a processor, virtual values based on a vehicle model and the sensor data from the plurality of other sensors; computing, by a processor, a residual difference between the measured value from the first sensor and the virtual values; detecting, by a processor, whether a fault exists in the first sensor based on the residual difference; and when a fault in the sensor is detected, generating, by a processor, a control value based on the virtual values instead of the measured value.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: February 12, 2019
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, UNIVERSITY OF WATERLOO
    Inventors: Shih-Ken Chen, Nikolai K. Moshchuk, Bakhtiar B. Litkouhi, Reza Zarringhalam, Amir Khajepour, William Melek
  • Publication number: 20180231100
    Abstract: The disclosure is directed at a method and apparatus for controlling unwanted vibrations in a mechanical system. The apparatus includes a set of different eccentric and/or concentric masses mounted to the mechanical system for generating forces to counteract the sensed unwanted vibrations. The apparatus further includes a set of motors that control movement of the set of masses.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 16, 2018
    Inventor: Amir KHAJEPOUR
  • Patent number: 10040460
    Abstract: A system and method for computationally estimating a directional velocity of a vehicle in real time under different configurations and road conditions for use in vehicle antilock braking, adaptive cruise control, and traction and stability control by correcting measured accelerations with respect to the estimated road angles. A time window is used to provide reliable mapped acceleration for the transient regions and maneuvers on gravel surfaces with high fluctuations in the acceleration measurement. Longitudinal and lateral accelerations are mapped from the vehicle's CG into the tire coordinates using the vehicle's geometry, lateral velocity, yaw rate, and the steering wheel angle to generate system matrices of the combined kinematic-force estimation structure.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: August 7, 2018
    Assignee: GM Global Technology Operations, LLC
    Inventors: SeyedAlireza Kasaiezadeh Mahabadi, Ehsan Hashemi, Amir Khajepour, Shih-ken Chen, Bakhtiar B. Litkouhi
  • Patent number: 10000215
    Abstract: A method of reconstructing a detected faulty signal. A pitch sensor fault is detected by a processor. A signal of the detected faulty pitch sensor is reconstructed using indirect sensor data. The reconstructed signal is output to a controller to maintain stability.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: June 19, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Shih-Ken Chen, Bakhtiar B. Litkouhi, Amir Khajepour, Reza Zarringhalam, William Melek
  • Publication number: 20180029603
    Abstract: A system and method for computationally estimating a directional velocity of a vehicle in real time under different configurations and road conditions for use in vehicle antilock braking, adaptive cruise control, and traction and stability control by correcting measured accelerations with respect to the estimated road angles. A time window is used to provide reliable mapped acceleration for the transient regions and maneuvers on gravel surfaces with high fluctuations in the acceleration measurement. Longitudinal and lateral accelerations are mapped from the vehicle's CG into the tire coordinates using the vehicle's geometry, lateral velocity, yaw rate, and the steering wheel angle to generate system matrices of the combined kinematic-force estimation structure.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 1, 2018
    Inventors: SeyedAlireza Kasaiezadeh Mahabadi, Ehsan Hashemi, Amir Khajepour, Shih-ken Chen, Bakhtiar B. Litkouhi
  • Publication number: 20180025558
    Abstract: Methods and systems are provided for detecting faults in a sensor and reconstructing an output signal without use of the faulty sensor. In one embodiment, a method includes: receiving, by a processor, sensor data indicating a measured value from a first sensor; receiving, by a processor, sensor data indicating measured values from a plurality of other sensors; computing, by a processor, virtual values based on a vehicle model and the sensor data from the plurality of other sensors; computing, by a processor, a residual difference between the measured value from the first sensor and the virtual values; detecting, by a processor, whether a fault exists in the first sensor based on the residual difference; and when a fault in the sensor is detected, generating, by a processor, a control value based on the virtual values instead of the measured value.
    Type: Application
    Filed: July 19, 2016
    Publication date: January 25, 2018
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, UNIVERSITY OF WATERLOO
    Inventors: SHIH-KEN CHEN, NIKOLAI K. MOSHCHUK, BAKHTIAR B. LITKOUHI, REZA ZARRINGHALAM, AMIR KHAJEPOUR, WILLIAM MELEK
  • Patent number: 9873425
    Abstract: A method of reconstructing a detected faulty signal. A roll sensor fault is detected by a processor. A signal of the detected faulty roll sensor is reconstructed using indirect sensor data. The reconstructed signal is output to a controller to maintain stability.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: January 23, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Shih-Ken Chen, Bakhtiar B. Litkouhi, Amir Khajepour, William Melek, Reza Zarringhalam
  • Publication number: 20170297562
    Abstract: A method of reconstructing a detected faulty signal. A roll sensor fault is detected by a processor. A signal of the detected faulty roll sensor is reconstructed using indirect sensor data. The reconstructed signal is output to a controller to maintain stability.
    Type: Application
    Filed: April 13, 2016
    Publication date: October 19, 2017
    Inventors: SHIH-KEN CHEN, BAKHTIAR B. LITKOUHI, AMIR KHAJEPOUR, WILLIAM MELEK, REZA ZARRINGHALAM