Patents by Inventor Kathryn L. Pattok
Kathryn L. Pattok 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: 10155531Abstract: A method of controlling an electric power steering system of a vehicle is provided. The method determines that one or more hand wheel torque sensors of the vehicle are not enabled. The method generates an assist torque command by estimating a lateral acceleration of the vehicle based on a hand wheel angle and determining an amount of assist torque based on the estimated lateral acceleration. The method controls the electric power steering system using the generated assist torque command.Type: GrantFiled: April 28, 2014Date of Patent: December 18, 2018Assignee: STEERING SOLUTIONS IP HOLDING CORPORATIONInventors: Anthony J. Champagne, Timothy W. Kaufmann, Kathryn L. Pattok, Tejas M. Varunjikar
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Publication number: 20140324294Abstract: A method of controlling an electric power steering system of a vehicle is provided. The method determines that one or more hand wheel torque sensors of the vehicle are not enabled. The method generates an assist torque command by estimating a lateral acceleration of the vehicle based on a hand wheel angle and determining an amount of assist torque based on the estimated lateral acceleration. The method controls the electric power steering system using the generated assist torque command.Type: ApplicationFiled: April 28, 2014Publication date: October 30, 2014Applicant: Steering Solutions IP Holding CorporationInventors: Anthony J. Champagne, Timothy W. Kaufmann, Kathryn L. Pattok, Tejas M. Varunjikar
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Patent number: 8489280Abstract: A system and a method for determining an absolute rotational position of the vehicle handwheel are provided. In one exemplary embodiment, a method includes monitoring an amount of torque applied to the vehicle handwheel. The method further includes monitoring a rotational speed of the vehicle handwheel. The method further includes setting an absolute position value indicating the absolute position of the vehicle handwheel equal to a predetermined steering travel limit of the vehicle handwheel when both the amount of torque applied to the vehicle handwheel is greater than or equal to a threshold torque level, and the rotational speed of the vehicle handwheel is less than or equal to a threshold rotational speed. The method further includes storing the absolute rotational position value in a memory device.Type: GrantFiled: October 31, 2007Date of Patent: July 16, 2013Assignee: Steering Solutions IP Holding CorporationInventors: William H. Wittig, Kathryn L. Pattok
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Patent number: 8375779Abstract: A method for determining an absolute rotational position of a vehicle steering column is provided. In one exemplary embodiment, the method determines a relative position of a steering assist motor utilizing a relative position sensor. Thereafter, the method determines the absolute rotational position of the vehicle steering column based upon the relative position of the steering assist motor.Type: GrantFiled: May 19, 2011Date of Patent: February 19, 2013Assignee: Steering Solutions IP Holding CorporationInventors: Kathryn L. Pattok, Geoff P. Krieger, Tony Dodak, William H. Wittig, Steve R. Bannister
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Publication number: 20110224874Abstract: A method for determining an absolute rotational position of a vehicle steering column is provided. In one exemplary embodiment, the method determines a relative position of a steering assist motor utilizing a relative position sensor. Thereafter, the method determines the absolute rotational position of the vehicle steering column based upon the relative position of the steering assist motor.Type: ApplicationFiled: May 19, 2011Publication date: September 15, 2011Inventors: Kathryn L. Pattok, Geoff P. Krieger, Tony Dodak, William H. Wittig, Steve R. Bannister
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Patent number: 7950274Abstract: A method for determining an absolute rotational position of a vehicle steering column is provided. In one exemplary embodiment, the method determines a relative position of a steering assist motor utilizing a relative position sensor. Thereafter, the method determines the absolute rotational position of the vehicle steering column based upon the relative position of the steering assist motor.Type: GrantFiled: April 23, 2008Date of Patent: May 31, 2011Inventors: Kathryn L. Pattok, Geoff P. Krieger, Tony Dodak, William H. Wittig, Steve R. Bannister
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Patent number: 7725227Abstract: A method, system, and apparatus for providing enhanced steering pull compensation are provided. The method compensates for steering pull in a vehicle steering system that includes a handwheel. The method includes monitoring the vehicle to determine whether the vehicle is heading forward along a substantially linear straight-ahead path and, if so, measuring handwheel torque, as a sensed torque signal, to determine an amount of steering pull existing at the handwheel. The method also includes generating a torque assist signal in response to the sensed torque signal and calculating an offset signal for reducing the amount of steering pull to substantially zero. The method further includes producing a modified torque assist signal by adding the offset signal to the torque assist signal, and applying the modified torque assist signal to the vehicle steering system.Type: GrantFiled: December 15, 2006Date of Patent: May 25, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Kathryn L. Pattok, Terrence D. Smith, Ashok Chandy, Julie A. Kleinau, Jeff Zuraski, Mark P. Colosky, Troy P. Strieter
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Publication number: 20090112403Abstract: A system and a method for determining an absolute rotational position of the vehicle handwheel are provided. In one exemplary embodiment, a method includes monitoring an amount of torque applied to the vehicle handwheel. The method further includes monitoring a rotational speed of the vehicle handwheel. The method further includes setting an absolute position value indicating the absolute position of the vehicle handwheel equal to a predetermined steering travel limit of the vehicle handwheel when both the amount of torque applied to the vehicle handwheel is greater than or equal to a threshold torque level, and the rotational speed of the vehicle handwheel is less than or equal to a threshold rotational speed. The method further includes storing the absolute rotational position value in a memory device.Type: ApplicationFiled: October 31, 2007Publication date: April 30, 2009Inventors: William H. Wittig, Kathryn L. Pattok
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Patent number: 7523806Abstract: A method for generating an active damping torque signal for a vehicle steering system includes receiving a vehicle speed input, receiving a handwheel velocity input, receiving a handwheel torque input, and generating an active damping torque output from each of the inputs, wherein the active damping torque output is non-linear with respect to the handwheel velocity input.Type: GrantFiled: September 20, 2005Date of Patent: April 28, 2009Assignee: Delphi Technologies, IncInventors: Geoff P. Krieger, Julie A. Kleinau, Kathryn L. Pattok, Bertram Moeller
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Publication number: 20080282788Abstract: A method for determining an absolute rotational position of a vehicle steering column is provided. In one exemplary embodiment, the method determines a relative position of a steering assist motor utilizing a relative position sensor. Thereafter, the method determines the absolute rotational position of the vehicle steering column based upon the relative position of the steering assist motor.Type: ApplicationFiled: April 23, 2008Publication date: November 20, 2008Inventors: Kathryn L. Pattok, Geoff P. Krieger, Tony Dodak, William H. Wittig, Steve R. Bannister
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Publication number: 20080147276Abstract: A method, system, and apparatus for providing enhanced steering pull compensation are provided. The method compensates for steering pull in a vehicle steering system that includes a handwheel. The method includes monitoring the vehicle to determine whether the vehicle is heading forward along a substantially linear straight-ahead path and, if so, measuring handwheel torque, as a sensed torque signal, to determine an amount of steering pull existing at the handwheel. The method also includes generating a torque assist signal in response to the sensed torque signal and calculating an offset signal for reducing the amount of steering pull to substantially zero. The method further includes producing a modified torque assist signal by adding the offset signal to the torque assist signal, and applying the modified torque assist signal to the vehicle steering system.Type: ApplicationFiled: December 15, 2006Publication date: June 19, 2008Applicant: DELPHI TECHNOLOGIES, INC.Inventors: Kathryn L. Pattok, Terrence D. Smith, Ashok Chandy, Julie A. Kleinau, Jeff Zuraski, Mark P. Colosky, Troy P. Strieter
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Patent number: 6965820Abstract: A controller (32) for a vehicular system (10) that includes a hand-wheel (16) and an electric motor (34) includes a torque-assist function (56) responsive to a signal representing the torque applied to the hand-wheel (16) for providing a torque-assist command to the motor (34), and a steering-pull compensator (52) responsive to a signal representing a valid ignition cycle for modifying the torque-assist command to the motor (34) by an offset corresponding to a detected steering-pull condition; where the method of control includes receiving the signal indicative of the torque applied to the hand-wheel (16), providing a torque-assist command to the motor (34) in response to the received torque signal, detecting an enabling signal related to the signal representing a valid ignition cycle, quantifying a steering-pull condition in response to the received and detected signals, and modifying the torque-assist command to the motor (34) by an offset corresponding to the quantified steering-pull condition.Type: GrantFiled: September 18, 2001Date of Patent: November 15, 2005Assignee: Delphi Technologies, Inc.Inventors: Sanket S. Amberkar, Ashok Chandy, Kathryn L. Pattok, Mark P. Colosky, William Chin-Woei Lin, Weiwen Deng, Yuen-Kwok Chin
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Publication number: 20030055543Abstract: A controller (32) for a vehicular system (10) that includes a hand-wheel (16) and an electric motor (34) includes a torque-assist function (56) responsive to a signal representing the torque applied to the hand-wheel (16) for providing a torque-assist command to the motor (34), and a steering-pull compensator (52) responsive to a signal representing a valid ignition cycle for modifying the torque-assist command to the motor (34) by an offset corresponding to a detected steering-pull condition; where the method of control includes receiving the signal indicative of the torque applied to the hand-wheel (16), providing a torque-assist command to the motor (34) in response to the received torque signal, detecting an enabling signal related to the signal representing a valid ignition cycle, quantifying a steering-pull condition in response to the received and detected signals, and modifying the torque-assist command to the motor (34) by an offset corresponding to the quantified steering-pull condition.Type: ApplicationFiled: September 18, 2001Publication date: March 20, 2003Inventors: Sanket S. Amberkar, Ashok Chandy, Kathryn L. Pattok, Mark P. Colosky