Patents by Inventor Matthew M. Karaba
Matthew M. Karaba 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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Patent number: 9227659Abstract: Methods and systems are provided for implementing a lane control feature for vehicles having a passenger side, a driver side, one or more wheels on the passenger side, and one or more wheels on the driver side. A sensor is configured to obtain information pertaining to operation of a vehicle with respect to a lane of a roadway. The processor is coupled to the sensor, and is configured to at least facilitate determining, using the information, whether the lane control feature is activated, and providing differential torque between one or more driver side wheels and one or more passenger side wheels when the lane control feature is activated.Type: GrantFiled: January 22, 2014Date of Patent: January 5, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Sami Ahmed, Matthew M. Karaba, Paul R. Williams
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Publication number: 20150203151Abstract: Methods and systems are provided for implementing a lane control feature for vehicles having a passenger side, a driver side, one or more wheels on the passenger side, and one or more wheels on the driver side. A sensor is configured to obtain information pertaining to operation of a vehicle with respect to a lane of a roadway. The processor is coupled to the sensor, and is configured to at least facilitate determining, using the information, whether the lane control feature is activated, and providing differential torque between one or more driver side wheels and one or more passenger side wheels when the lane control feature is activated.Type: ApplicationFiled: January 22, 2014Publication date: July 23, 2015Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: SAMI AHMED, MATTHEW M. KARABA, PAUL R. WILLIAMS
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Patent number: 8315751Abstract: A method for controlling braking in a hybrid vehicle includes the steps of determining a value of a variable pertaining to operation of the hybrid vehicle and applying regenerative braking based at least in part on the value of the variable. The variable comprises a speed of the hybrid vehicle, a steering angle of the hybrid vehicle, or a rate of change of the steering angle.Type: GrantFiled: February 29, 2008Date of Patent: November 20, 2012Assignee: GM Global Technology Operations LLCInventors: Eric E. Krueger, Matthew M. Karaba
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Patent number: 8234042Abstract: A method for controlling a limited by-wire active front steering system includes measuring an input steering angle, determining a tire saturation limit, and comparing the saturation limit to the input angle. A target actuator angle from a steering actuator is limited when the input angle is greater than the saturation limit. A constant value provides a fixed steering gear ratio when the input angle is less than the saturation limit. A limited by-wire steering system for a vehicle includes a steering device, a sensor for measuring an input steering angle, a controller for calculating a first target actuator angle when the input angle is less than a threshold, and a second target actuator angle when the input angle is greater than the threshold. The threshold is a calibrated saturation limit of a road wheel of the vehicle.Type: GrantFiled: March 5, 2008Date of Patent: July 31, 2012Assignee: GM Global Technology Operations LLCInventors: Robert R. Bolio, Christopher A. Kinser, Ross Feller, Matthew M. Karaba, Loren J. Majersik
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Patent number: 8190344Abstract: A method of optimizing steering and stability performance of a vehicle includes measuring a set of inertial data during a regenerative braking event (RBE), calculating a set of vehicle performance data using the inertial data, and comparing the performance data to calibrated threshold data to determine a maximum regenerative braking torque (RBT). The maximum RBT is automatically applied during the active RBE. The vehicle includes a chassis, an electric motor/generator for applying an RBT, a frictional braking system, chassis inertial sensors for measuring a set of chassis inertial data, and a controller having an algorithm for calculating a set of vehicle performance data using the chassis inertial data. The controller determines the maximum RBT by comparing the vehicle performance data to corresponding threshold data. The chassis inertial sensors can include accelerometers, a yaw rate sensor, a steering rate sensor, speed sensors, and/or a braking input sensor.Type: GrantFiled: October 9, 2008Date of Patent: May 29, 2012Assignee: GM Global Technology Operations LLCInventors: Eric E. Krueger, Matthew M. Karaba, Kevin S. Kidston
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Publication number: 20110049974Abstract: A method for controlling braking of a vehicle having a first axle and a second axle includes the steps of obtaining a deceleration value pertaining to an input from a driver of the vehicle, braking the first axle with a first pressure, braking the second axle with a second pressure that is substantially equal to the first pressure if the deceleration value has not exceeded a predetermined threshold, and braking the second axle with a third pressure that is greater than the first pressure if the deceleration value has exceeded the predetermined threshold.Type: ApplicationFiled: August 31, 2009Publication date: March 3, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: DANNY Y. MUI, PATRICK J. MONSERE, JON K. LOGAN, MARGARET C. RICHARDS, ERIC E. KRUEGER, KEVIN S. KIDSTON, MATTHEW M. KARABA
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Publication number: 20100094511Abstract: A method of optimizing steering and stability performance of a vehicle includes measuring a set of inertial data during a regenerative braking event (RBE), calculating a set of vehicle performance data using the inertial data, and comparing the performance data to calibrated threshold data to determine a maximum regenerative braking torque (RBT). The maximum RBT is automatically applied during the active RBE. The vehicle includes a chassis, an electric motor/generator for applying an RBT, a frictional braking system, chassis inertial sensors for measuring a set of chassis inertial data, and a controller having an algorithm for calculating a set of vehicle performance data using the chassis inertial data. The controller determines the maximum RBT by comparing the vehicle performance data to corresponding threshold data. The chassis inertial sensors can include accelerometers, a yaw rate sensor, a steering rate sensor, speed sensors, and/or a braking input sensor.Type: ApplicationFiled: October 9, 2008Publication date: April 15, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Eric E. Krueger, Matthew M. Karaba, Kevin S. Kidston
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Publication number: 20090228173Abstract: A method for controlling a limited by-wire active front steering system includes measuring an input steering angle, determining a tire saturation limit, and comparing the saturation limit to the input angle. A target actuator angle from a steering actuator is limited when the input angle is greater than the saturation limit. A constant value provides a fixed steering gear ratio when the input angle is less than the saturation limit. A limited by-wire steering system for a vehicle includes a steering device, a sensor for measuring an input steering angle, a controller for calculating a first target actuator angle when the input angle is less than a threshold, and a second target actuator angle when the input angle is greater than the threshold. The threshold is a calibrated saturation limit of a road wheel of the vehicle.Type: ApplicationFiled: March 5, 2008Publication date: September 10, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Robert R. Bolio, Christopher A. Kinser, Ross Feller, Matthew M. Karaba, Loren J. Majersik
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Publication number: 20090222156Abstract: A method for controlling braking in a hybrid vehicle includes the steps of determining a value of a variable pertaining to operation of the hybrid vehicle and applying regenerative braking based at least in part on the value of the variable. The variable comprises a speed of the hybrid vehicle, a steering angle of the hybrid vehicle, or a rate of change of the steering angle.Type: ApplicationFiled: February 29, 2008Publication date: September 3, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Eric E. KRUEGER, Matthew M. KARABA
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Patent number: 7493201Abstract: An active front wheel steering control system for a vehicle that includes a first control sub-system that provides AFS oversteer control to control the angle of the front wheels during an oversteer condition, and a second control sub-system that provides AFS understeer control to control the angle of the front wheels during an understeer condition. A controller monitors a first parameter as an oversteer flag associated with the first control sub-system and a second parameter as an understeer flag associated with the second control sub-system.Type: GrantFiled: November 1, 2004Date of Patent: February 17, 2009Assignee: General Motors CorporationInventors: Youssef A. Ghoneim, Robert R. Bolio, Matthew M. Karaba
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Patent number: 7483775Abstract: A vehicle comprises a semi-active suspension including controllably adjustable suspension dampers. Open loop and closed loop damper commands are determined for each damper and, depending upon turning direction and damper motion, each damper is controlled with one of the open loop and closed loop damper commands.Type: GrantFiled: September 20, 2005Date of Patent: January 27, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Matthew M. Karaba, Youssef A. Ghoneim, Robert R. Bolio
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Patent number: 7472006Abstract: A vehicle includes a plurality of sub-systems and corresponding controllers for effecting normal control thereover. The vehicle further includes a vehicle dynamics controller for providing high-priority sub-system commands for sub-system control to effect vehicle dynamics enhancements. The vehicle dynamics controller includes a plurality of independently decomposable and recomposable software components or layers and accessible inter-layer bus structure.Type: GrantFiled: September 20, 2005Date of Patent: December 30, 2008Assignee: GM Global Technology Operations, Inc.Inventors: Michael P. Turski, Matthew M. Karaba, Youssef A. Ghoneim, Mark N. Howell, David M. Sidlosky