Patents by Inventor Chad T. Zagorski
Chad T. Zagorski 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: 20130030651Abstract: A collision avoidance system in a host vehicle that provides automatic steering control using differential braking in the event that the normal steering control fails. The system determines whether a collision with an object, such as a target vehicle, in front of the host vehicle is imminent, and if so, determines an optimal path for the host vehicle to travel along to avoid the object if the collision is imminent. The collision avoidance system may determine that automatic steering is necessary to cause the vehicle to travel along the optimal path to avoid the target. If the collision avoidance system does determine that automatic steering is necessary and detects that normal vehicle steering has failed, the system uses differential braking to steer the vehicle along the path.Type: ApplicationFiled: July 25, 2011Publication date: January 31, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Nikolai K. Moshchuk, Shih-Ken Chen, Jin-Woo Lee, Chad T. Zagorski, Aamrapali Chatterjee
-
Publication number: 20130024075Abstract: Methods and vehicles are provided for identifying objects in proximity to the vehicle and controlling active safety functionality for the vehicle. A target object in proximity to the vehicle is detected. A movement of the target object is measured. The target object is classified based at least in part on the movement. The active safety functionality is controlled based at least in part on the classification of the target object.Type: ApplicationFiled: July 22, 2011Publication date: January 24, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: CHAD T. ZAGORSKI, KEVIN P. CONRAD, DANIEL GANDHI
-
Publication number: 20120293314Abstract: A vehicle collision warning system and method may be used to detect a potential or impending collision with another vehicle and to send a corresponding warning to the driver. In an exemplary embodiment, the collision warning system uses one or more target vehicle readings (e.g., a relative velocity reading (?v), a target vehicle acceleration reading (aTAR), and a relative distance reading or range (?d)) to solve a unified collision warning algorithm. If the unified collision warning algorithm determines that there is a potential collision with the target vehicle, then the system sends a corresponding warning to the driver.Type: ApplicationFiled: May 19, 2011Publication date: November 22, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Aamrapali Chatterjee, Chad T. Zagorski, Paul R. Williams
-
Patent number: 8255121Abstract: A method is provided for detecting a likely pedal misapplication event and mitigating the effects of a pedal misapplication. In one embodiment the method comprises determining if likely pedal misapplication has occurred by the steps of: determining if a gear shift has occurred within a threshold time; determining if a vehicle velocity is below a threshold velocity; determining if the accelerator pedal is above a threshold application level; determining if the brake pedal is being applied by the driver; and determining if an obstacle is in the vehicle path and within a threshold distance. If these criteria are found, a likely pedal misapplication is detected.Type: GrantFiled: July 7, 2009Date of Patent: August 28, 2012Assignee: GM Global Technology Operations LLCInventors: Chad T. Zagorski, Daniel B. Cutler, Aamrapali Chatterjee
-
Publication number: 20120101713Abstract: A system and method for providing an optimal collision avoidance path for a host vehicle that may potentially collide with a target vehicle. The method includes providing off-line an optimization look-up table for storing on the host vehicle that includes an optimal vehicle braking or longitudinal deceleration and an optimal distance along the optimal path based on a range of speeds of the host vehicle and coefficients of friction of the roadway surface. The method determines the current speed of the host vehicle and the coefficient of friction of the roadway surface during the potential collision, and uses the look-up table to determine the optimal longitudinal deceleration or braking of the host vehicle for the optimal vehicle path. The method also determines an optimal lateral acceleration or steering of the host vehicle for the optimal vehicle path based on a friction ellipse and the optimal braking.Type: ApplicationFiled: October 20, 2010Publication date: April 26, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Nikolai K. Moshchuk, Shih-Ken Chen, Chad T. Zagorski, Aamrapali Chatterjee
-
Publication number: 20120101701Abstract: A collision avoidance system in a host vehicle that employs combined automatic braking and steering. The collision avoidance system defines thresholds that identify a time to collision with a target vehicle by the host vehicle that are based on the speed of the host vehicle, the acceleration of the host vehicle, the speed of the target vehicle, the acceleration of the target vehicle, the distance to the target vehicle from the host vehicle and a coefficient of friction of the roadway. The collision avoidance system provides full automatic collision avoidance braking if the time to collision is less than one threshold and the lane adjacent to the host vehicle is not clear. The collision avoidance system provides both automatic steering and braking of the host vehicle if the time to collision is less than another threshold and the lane adjacent to the host vehicle is clear.Type: ApplicationFiled: October 20, 2010Publication date: April 26, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Nikolai K. Moshchuk, Shih-Ken Chen, Chad T. Zagorski, Aamrapali Chatterjee
-
Patent number: 8126626Abstract: A motor vehicle travel path control which monitors, during an autonomous braking event initiated by a collision preparation system the actual motor vehicle travel path in relation to the driver intended motor vehicle travel path, and in the event a departure from the driver intended motor vehicle path occurs, the motor vehicle travel path control adjusts braking so as to return the motor vehicle travel path to that intended by the driver.Type: GrantFiled: January 30, 2008Date of Patent: February 28, 2012Assignee: GM Global Technology Operations LLCInventor: Chad T. Zagorski
-
Publication number: 20120022747Abstract: A vehicle control method includes iteratively modifying a level of braking of the vehicle until it is determined that the vehicle has substantially lost traction with respect to the road surface, then determining the coefficient of friction between the road surface and the tire based on the level of braking at the time the vehicle substantially lost fraction. In one embodiment, previous ABS or other vehicle control events are used as a basis for estimating an initial level of braking to be applied during the friction measurement procedure. Such a deterministic maneuver can also function as a collision warning to the driver of the vehicle.Type: ApplicationFiled: July 22, 2010Publication date: January 26, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: CHAD T. ZAGORSKI, AAMRAPALI CHATTERJEE, NIKOLAI K. MOSHCHUK, SHIH-KEN CHEN
-
Publication number: 20110307175Abstract: Methods and systems are provided for assessing a target proximate a vehicle. A location and a velocity of the target are obtained. The location and the velocity of the target are mapped onto a polar coordinate system via a processor. A likelihood that the vehicle and the target will collide is determined using the mapping.Type: ApplicationFiled: June 15, 2010Publication date: December 15, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: DANIEL GANDHI, CHAD T. ZAGORSKI
-
Publication number: 20110295464Abstract: A vehicle control system defines a set of predetermined criteria relating to the motion of the vehicle and a set of vehicle actions associated with the set of predetermined criteria. The vehicle actions each specify a steering action and/or a braking action. Friction data indicative of a frictional attribute (for example, coefficient of friction) of the contact region between the vehicle and the surface is received. The predetermined criteria are modified based on the friction data. When one or more of the predetermined criteria are met, the system applies the corresponding steering and/or braking actions.Type: ApplicationFiled: May 28, 2010Publication date: December 1, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: CHAD T. ZAGORSKI, AAMRAPALI CHATTERJEE, NIKOLAI K. MOSHCHUK, SHIH-KEN CHEN
-
Publication number: 20110010034Abstract: A method is provided for detecting a likely pedal misapplication event and mitigating the effects of a pedal misapplication. In one embodiment the method comprises determining if likely pedal misapplication has occurred by the steps of: determining if a gear shift has occurred within a threshold time; determining if a vehicle velocity is below a threshold velocity; determining if the accelerator pedal is above a threshold application level; determining if the brake pedal is being applied by the driver; and determining if an obstacle is in the vehicle path and within a threshold distance. If these criteria are found, a likely pedal misapplication is detected.Type: ApplicationFiled: July 7, 2009Publication date: January 13, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: CHAD T. ZAGORSKI, DANIEL B. CUTLER, AAMRAPALI CHATTERJEE
-
Patent number: 7866427Abstract: A motor vehicle multi-stage integrated brake assist (MSIBA) system, which can provide at least one brake assist level of a plurality of predetermined levels of brake assist (i.e., deceleration) less than or greater than the required amount of braking (i.e., deceleration) calculated by the MSIBA to avoid a collision with an obstacle at the time the driver initiates braking, but allows the driver to increase or remove the provided predetermined level of brake assist.Type: GrantFiled: July 8, 2008Date of Patent: January 11, 2011Assignee: GM Global Technology Operations LLCInventor: Chad T. Zagorski
-
Publication number: 20100094520Abstract: A vehicle has wheels, sensors for generating an input data set, and a controller. The controller is in communication with the sensors, including a first sensor for detecting an obstacle on a road surface in a first manner, and adapted to monitor a boundary of the road surface to determine when the wheels are crossing the boundary. A second sensor detects the obstacle in a second manner, and additional sensors determine inertial data of the vehicle. The controller compares the input data set to calibrated thresholds, and determines an appropriate control response such as autonomous braking based on the results. A method optimizes a collision preparation response in the vehicle by measuring the inertial data, detecting the obstacle using a radar or LiDAR device, and monitoring the boundary using an electro-optical device. A supplemental braking force is automatically applied when the vehicle crosses the boundary while the obstacle is detected.Type: ApplicationFiled: October 9, 2008Publication date: April 15, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Chad T. Zagorski
-
Publication number: 20100006363Abstract: A motor vehicle multi-stage integrated brake assist (MSIBA) system, which can provide at least one brake assist level of a plurality of predetermined levels of brake assist (i.e., deceleration) less than or greater than the required amount of braking (i.e., deceleration) calculated by the MSIBA to avoid a collision with an obstacle at the time the driver initiates braking, but allows the driver to increase or remove the provided predetermined level of brake assist.Type: ApplicationFiled: July 8, 2008Publication date: January 14, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Chad T. Zagorski
-
Publication number: 20090192687Abstract: A motor vehicle travel path control which monitors, during an autonomous braking event initiated by a collision preparation system the actual motor vehicle travel path in relation to the driver intended motor vehicle travel path, and in the event a departure from the driver intended motor vehicle path occurs, the motor vehicle travel path control adjusts braking so as to return the motor vehicle travel path to that intended by the driver.Type: ApplicationFiled: January 30, 2008Publication date: July 30, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Chad T. Zagorski