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: 20120218094Abstract: 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: ApplicationFiled: February 28, 2011Publication date: August 30, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Jin-Woo Lee, Bakhtiar Brian Litkouhi, Elizabeth S. Nunning
-
Publication number: 20120197469Abstract: 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: ApplicationFiled: January 31, 2011Publication date: August 2, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Youssef A. Ghoneim, Shih-Ken Chen, Valery Pylypchuk, Nikolai K. Moshchuk, Bakhtiar Brian Litkouhi
-
Publication number: 20120166032Abstract: 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: ApplicationFiled: December 23, 2010Publication date: June 28, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: JIN-WOO LEE, BAKHTIAR BRIAN LITKOUHI
-
Patent number: 8200397Abstract: 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: GrantFiled: July 16, 2008Date of Patent: June 12, 2012Assignee: GM Global Technology Operations LLCInventors: Jihan Ryu, Kwang-Keun Shin, Jin-Woo Lee, Bakhtiar Brian Litkouhi
-
Patent number: 8192036Abstract: 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: GrantFiled: August 12, 2008Date of Patent: June 5, 2012Assignee: GM Global Technology Operations LLCInventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
-
Patent number: 8190322Abstract: 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: GrantFiled: January 13, 2009Date of Patent: May 29, 2012Assignee: GM Global Technology Operations LLCInventors: 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: 8167444Abstract: 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: GrantFiled: August 12, 2008Date of Patent: May 1, 2012Assignee: GM Global Technology Operations LLCInventors: Jin-Woo Lee, Kwang-Keun Shin, Jihan Ryu, Bakhtiar Brian Litkouhi
-
Publication number: 20120055744Abstract: 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: ApplicationFiled: September 7, 2010Publication date: March 8, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Shih-Ken Chen, Valery Pylypchuk, Youssef A. Ghoneim, Weiwen Deng, Nikolai K. Moshchuk, Bakhtiar Brian Litkouhi
-
Publication number: 20120059547Abstract: 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: ApplicationFiled: September 7, 2010Publication date: March 8, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Shih-Ken CHEN, Youssef A. GHONEIM, Weiwen DENG, Nikolai K. MOSHCHUK, Bakhtiar Brian LITKOUHI, Valery PYLYPCHUK
-
Patent number: 8111147Abstract: 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: GrantFiled: May 13, 2008Date of Patent: February 7, 2012Assignee: GM Global Technology Operations LLCInventor: Bakhtiar Brian Litkouhi
-
Publication number: 20100280711Abstract: 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: ApplicationFiled: January 22, 2010Publication date: November 4, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Shih-Ken Chen, Bakhtiar Brian Litkouhi
-
Publication number: 20100228417Abstract: 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: ApplicationFiled: March 6, 2009Publication date: September 9, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Yong H. Lee, Bakhtiar Brian Litkouhi
-
Publication number: 20100179720Abstract: 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: ApplicationFiled: January 13, 2009Publication date: July 15, 2010Applicant: 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: 20100177413Abstract: 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: ApplicationFiled: January 13, 2009Publication date: July 15, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
-
Publication number: 20100177412Abstract: 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: ApplicationFiled: January 13, 2009Publication date: July 15, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
-
Publication number: 20100082195Abstract: 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: ApplicationFiled: December 3, 2009Publication date: April 1, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Bakhtiar Brian Litkouhi
-
Publication number: 20100080416Abstract: 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: ApplicationFiled: October 1, 2008Publication date: April 1, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Kwang-Keun Shin, Jihan Ryu, Bakhtiar Brian Litkouhi
-
Publication number: 20100039722Abstract: 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: ApplicationFiled: August 12, 2008Publication date: February 18, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Kwang-Keun Shin, Jihan Ryu, Bakhtiar Brian Litkouhi
-
Publication number: 20100039721Abstract: 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: ApplicationFiled: August 12, 2008Publication date: February 18, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi
-
Publication number: 20100039720Abstract: 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: ApplicationFiled: August 12, 2008Publication date: February 18, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jin-Woo Lee, Jihan Ryu, Kwang-Keun Shin, Bakhtiar Brian Litkouhi