Patents by Inventor Bakhtiar Brian Litkouhi

Bakhtiar Brian Litkouhi 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: 20120218094
    Abstract: A method is provided of estimating a road grade of a current driven road. A nominal value of a vehicle operating parameter is measured during a nominal vehicle operating condition. The vehicle operating parameter is related to a vehicle thrust power. The nominal value of the vehicle operating condition is comprised of a nominal acceleration corresponding to the nominal value when the vehicle is driven on a substantially non-inclined road. The nominal value and nominal acceleration is stored in a memory. An actual value of the vehicle operating parameter is determined during a current vehicle operating condition. A vehicle acceleration corresponding to the actual value of the vehicle operating parameter is measured. The road grade of the current driven road is estimated as a function of a comparison between the measured acceleration value and the nominal acceleration that would be expected for the actual value of the vehicle operating parameter.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jin-Woo Lee, Bakhtiar Brian Litkouhi, Elizabeth S. Nunning
  • Publication number: 20120197469
    Abstract: A method for allocating forces among the corners of a vehicle having a redundant actuator suite includes determining a set of desired forces at the center of gravity of the vehicle, and allocating the set of desired forces among the corners of the vehicle as virtual control commands using a controller. The method also includes mapping the virtual control commands at the corners to actual or true control commands at the corners, and controlling a plurality of actuators at the corners using the actual or true control commands. The actuators may include friction brakes and wheel motors. Mapping the virtual control commands may include using a Least Squares formulation. Control of the actuators may be prioritized with respect to each other using weighting matrices. A vehicle includes a controller having actuators and a controller configured for executing the above method.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 2, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Youssef A. Ghoneim, Shih-Ken Chen, Valery Pylypchuk, Nikolai K. Moshchuk, Bakhtiar Brian Litkouhi
  • Publication number: 20120166032
    Abstract: A system and method for providing adaptive lane centering in an autonomous or semi-autonomous vehicle driving system includes activating a lane centering control system, detecting a driver steering override of the lane centering control system, monitoring a lane centering offset when a driver override condition is detected, determining if the lane centering offset represents a driver bias and adjusting the lane centering offset in the lane centering control system to compensate for the driver bias.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: JIN-WOO LEE, BAKHTIAR BRIAN LITKOUHI
  • Patent number: 8200397
    Abstract: Mirrors on a motor vehicle are adjusted by monitoring the position of a first, preferably manually adjusted, mirror and adjusting the position of additional mirrors based on the monitored position of the first one of the mirrors.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 12, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Jihan Ryu, Kwang-Keun Shin, Jin-Woo Lee, Bakhtiar Brian Litkouhi
  • Patent number: 8192036
    Abstract: A system and method for automatically correcting the viewing angle of a rear-view mirror on a vehicle towing a trailer when the vehicle is traveling around a curve. If the dimensions of the trailer are unknown, then the corrected viewing angle is the same as the hitch angle between the vehicle and the trailer. If the dimensions of the trailer are known, then trigonometry is used to determine the corrected viewing angle. Depending on whether the road is curving to the right or to the left will determine whether the left side rear-view mirror or the right side rear-view mirror is adjusted.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: June 5, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
  • Patent number: 8190322
    Abstract: A system and method for providing autonomous and remote vehicle maintenance and repair. The system employs an on-board diagnosis and prognosis module that monitors one or more vehicle buses to identify trouble codes and other information indicating a vehicle problem. The on-board module causes a telematic device on the vehicle to broadcast a message including a problem code that identifies the problem the vehicle is having. A remote repair center may receive the message and may identify a software upgrade patch associated with the problem that can be transmitted to the vehicle to upgrade its software to correct the problem. Also, the message may be received by another vehicle that is part of a broadcast network that has previously received the software upgrade patch to fix a problem on that vehicle, where the receiving vehicle may transmit the software upgrade patch to the vehicle having the problem.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: William C. Lin, Bakhtiar Brian Litkouhi, Ansaf I. Alrabady, Balarama V. Murty, Xiaodong Zhang, Steven W. Holland, Mutasim A. Salman, Rami I. Debouk, Yuen-Kwok W Chin
  • Patent number: 8167444
    Abstract: A system and method for automatically correcting the viewing angle of a rear-view mirror on a vehicle when the vehicle is traveling around a curve. The system estimates the curvature of the road using only vehicle speed and vehicle steering angle information. The road curvature estimation is used to determine the radius of curvature of the road, which can then be used to determine the corrected viewing angle of the rear-view mirror. Depending on whether the road is curving to the right or to the left will determine whether the left side rear-view mirror or the right side rear-view mirror will be adjusted.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: May 1, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Jin-Woo Lee, Kwang-Keun Shin, Jihan Ryu, Bakhtiar Brian Litkouhi
  • Publication number: 20120055744
    Abstract: A method to control a vehicle including control of regenerative brakes and friction brakes includes monitoring a desired corner force and moment distribution, monitoring real-time actuator constraints including a braking torque limit of each of the regenerative brake, determining a regenerative braking torque for each of the regenerative brakes based upon the desired corner force and moment distribution and the real-time actuator constraints, determining a friction braking torque for each of the friction brakes based upon the desired corner force and moment distribution and the determined regenerative braking torque for each of the regenerative brakes, and controlling the vehicle based upon the determined regenerative braking torques and the determined friction braking torques.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 8, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shih-Ken Chen, Valery Pylypchuk, Youssef A. Ghoneim, Weiwen Deng, Nikolai K. Moshchuk, Bakhtiar Brian Litkouhi
  • Publication number: 20120059547
    Abstract: A method to control a vehicle having a plurality of wheels includes monitoring desired vehicle dynamics, determining a desired corner force and moment distribution based upon the desired vehicle dynamics and a real-time closed form dynamics optimization solution, and controlling the vehicle based upon the desired corner force and moment distribution. The real-time closed form dynamics optimization solution is based upon a minimized center of gravity force error component, a minimized control energy component, and a maximized tire force reserve component.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 8, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shih-Ken CHEN, Youssef A. GHONEIM, Weiwen DENG, Nikolai K. MOSHCHUK, Bakhtiar Brian LITKOUHI, Valery PYLYPCHUK
  • Patent number: 8111147
    Abstract: A lane change assist and/or lane departure warning system adapted for use with a vehicle having a module engaged by an operator, wherein the vehicle travels within a lane, and the system includes a steering wheel sensor, at least one sensor operable to detect a lane-marking or an approaching object in adjacent lanes in the direction of host vehicle travel, a warning device including an active material element engaged with the module, and a controller communicatively coupled to the sensor and device and configured to determine a spatial relationship between the vehicle and the lane-marking or approaching object in the direction of host vehicle travel, compare the relationship to a threshold, transmit an activation signal to the element when the relationship exceeds the threshold or when an object is detected and the wheel sensor indicates a turn towards the object, and generate an alert by activating the element.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: February 7, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Bakhtiar Brian Litkouhi
  • Publication number: 20100280711
    Abstract: A system and method for identifying a vehicle driver using a portable electronic device that the driver may be carrying that transmits a unique identification signal, and then using the identification of the driver to automatically put vehicle devices and systems in a desirable pre-set location for that driver. In one embodiment, the portable device is a wireless device employing Bluetooth communications protocol that wirelessly transmits an identification signal received by the vehicle to identify the driver. In another embodiment, the device is a USB device that is plugged into an appropriate USB port in the vehicle that allows the vehicle to identify the driver by the identified signal from the portable device.
    Type: Application
    Filed: January 22, 2010
    Publication date: November 4, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shih-Ken Chen, Bakhtiar Brian Litkouhi
  • Publication number: 20100228417
    Abstract: A system and method for determining whether a vehicle driver is holding a steering wheel of the vehicle while the vehicle is in an autonomous driving mode. The vehicle will include an electric power steering (EPS) system and may include an active front steering (AFS) system, both of which include a motor that can apply a high frequency and low amplitude perturbation signal to the steering wheel of the vehicle that is not felt by the vehicle driver and does not cause the vehicle to turn, but is able to be detected by a steering angle sensor. The method subtracts a steering angle command signal from the steering angle signal and removes road disturbances, and then determines whether the induced perturbation signal is present in the steering angle sensor signal. If the perturbation signal is present, then the system knows that the vehicle driver is not holding the steering wheel.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 9, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Yong H. Lee, Bakhtiar Brian Litkouhi
  • Publication number: 20100179720
    Abstract: A system and method for providing autonomous and remote vehicle maintenance and repair. The system employs an on-board diagnosis and prognosis module that monitors one or more vehicle buses to identify trouble codes and other information indicating a vehicle problem. The on-board module causes a telematic device on the vehicle to broadcast a message including a problem code that identifies the problem the vehicle is having. A remote repair center may receive the message and may identify a software upgrade patch associated with the problem that can be transmitted to the vehicle to upgrade its software to correct the problem. Also, the message may be received by another vehicle that is part of a broadcast network that has previously received the software upgrade patch to fix a problem on that vehicle, where the receiving vehicle may transmit the software upgrade patch to the vehicle having the problem.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: William C. Lin, Bakhtiar Brian Litkouhi, Ansaf I. Alrabady, Balarama V. Murty, Xiaodong Zhang, Steven W. Holland, Mutasim A. Salman, Rami I. Debouk, Yuen-Kwok Chin
  • Publication number: 20100177413
    Abstract: Systems and methods for automatically adjusting the orientation of one or more mirrors present on a motorized vehicle are responsive to the spatial position of at least one component of a driver seat present in such motorized vehicle.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
  • Publication number: 20100177412
    Abstract: Systems and methods for automatically adjusting the orientation of one or more mirrors present on a motorized vehicle are responsive to the spatial position of a component of a driver seat present in such motorized vehicle and the vehicle's primary rear-view mirror.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
  • Publication number: 20100082195
    Abstract: A vehicle includes a vehicle monitoring system for estimating vehicle motion states, a spatial monitoring system, an adaptive cruise control system for vehicle speed and acceleration control, a steering controller for vehicle lateral motion control, a roadway estimator, and an autonomic control system. Commanded vehicle operation is adjusted to achieve a preferred travel path based upon a predicted travel path and an estimated roadway. The preferred travel path is adapted responsive to the estimated roadway.
    Type: Application
    Filed: December 3, 2009
    Publication date: April 1, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Bakhtiar Brian Litkouhi
  • Publication number: 20100080416
    Abstract: A system and a method for detecting the eyes of a driver of a vehicle using a single camera. The method includes determining a set of positional parameters corresponding to a driving seat of the vehicle. The camera is positioned at a pre-determined location inside the vehicle, and a set of parameters corresponding to the camera is determined. The location of the driver's eyes is detected using the set of positional parameters, an image of the driver's face and the set of parameters corresponding to the camera.
    Type: Application
    Filed: October 1, 2008
    Publication date: April 1, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Kwang-Keun Shin, Jihan Ryu, Bakhtiar Brian Litkouhi
  • Publication number: 20100039722
    Abstract: A system and method for automatically correcting the viewing angle of a rear-view mirror on a vehicle when the vehicle is traveling around a curve. The system estimates the curvature of the road using only vehicle speed and vehicle steering angle information. The road curvature estimation is used to determine the radius of curvature of the road, which can then be used to determine the corrected viewing angle of the rear-view mirror. Depending on whether the road is curving to the right or to the left will determine whether the left side rear-view mirror or the right side rear-view mirror will be adjusted.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Kwang-Keun Shin, Jihan Ryu, Bakhtiar Brian Litkouhi
  • Publication number: 20100039721
    Abstract: A system and method for automatically correcting the viewing angle of a rear-view mirror on a vehicle towing a trailer when the vehicle is traveling around a curve. If the dimensions of the trailer are unknown, then the corrected viewing angle is the same as the hitch angle between the vehicle and the trailer. If the dimensions of the trailer are known, then trigonometry is used to determine the corrected viewing angle. Depending on whether the road is curving to the right or to the left will determine whether the left side rear-view mirror or the right side rear-view mirror is adjusted.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
  • Publication number: 20100039720
    Abstract: A system and method for automatically adjusting the viewing angle of both side rear-view mirrors on a vehicle when the vehicle is traveling on a hill. The system estimates the slope of the hill, and uses the estimated slope to determine a corrected viewing angle of the rear-view mirrors. Depending on whether the vehicle is traveling uphill or down-hill, would depend on which direction the rear-view mirrors will be adjusted.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi