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公开(公告)号：US10160484B2
公开(公告)日：2018-12-25
申请号：US15216916
申请日：2016-07-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jin-Woo Lee , Bakhtiar B. Litkouhi , Stephen R. Pastor , Kenneth L. Oblizajek
Abstract: A system and method for determining whether a driver is holding a vehicle steering wheel. The vehicle will include an electric power steering system and may further include autonomous or semi-autonomous driving features, such as Lane Centering Control or Lane Keeping Assist. The system includes a passive detection technique which monitors steering torque and steering angle, determines a resonant frequency of oscillation of the steering system from the measured data, and compares the resonant frequency to a known steering system natural frequency to make a hands-on/off determination. If the passive technique results are below a confidence threshold, then an active technique is employed which provides a steering angle perturbation and measures the frequency response, where the perturbation signal has characteristics which are prescribed based on the results of the passive technique. A steering torque greater than a threshold value is also an indication of the driver holding the steering wheel.
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公开(公告)号：US20170029021A1
公开(公告)日：2017-02-02
申请号：US15216916
申请日：2016-07-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： JIN-WOO LEE , Bakhtiar B. Litkouhi , Stephen R. Pastor , Kenneth L. Oblizajek
CPC classification number: B62D6/00 , B62D5/0457 , B62D15/025 , G05D1/0061 , G05D1/0088
Abstract: A system and method for determining whether a driver is holding a vehicle steering wheel. The vehicle will include an electric power steering system and may further include autonomous or semi-autonomous driving features, such as Lane Centering Control or Lane Keeping Assist. The system includes a passive detection technique which monitors steering torque and steering angle, determines a resonant frequency of oscillation of the steering system from the measured data, and compares the resonant frequency to a known steering system natural frequency to make a hands-on/off determination. If the passive technique results are below a confidence threshold, then an active technique is employed which provides a steering angle perturbation and measures the frequency response, where the perturbation signal has characteristics which are prescribed based on the results of the passive technique. A steering torque greater than a threshold value is also an indication of the driver holding the steering wheel.
Abstract translation: 一种用于确定驾驶员是否保持车辆方向盘的系统和方法。 车辆将包括电动助力转向系统，并且还可以包括自主或半自主的驾驶特征，例如车道居中控制或车道保持辅助。 该系统包括监测转向转矩和转向角的被动检测技术，根据测量数据确定转向系统的振荡谐振频率，并将谐振频率与已知的转向系统固有频率进行比较，以进行实际操作/关闭 决心。 如果无源技术结果低于置信阈值，则采用主动技术，其提供转向角扰动并测量频率响应，其中扰动信号具有基于被动技术的结果规定的特征。 大于阈值的转向扭矩也是保持方向盘的驾驶员的指示。
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Patent Agency Ranking
公开(公告)号：US09796226B2
公开(公告)日：2017-10-24
申请号：US14585552
申请日：2014-12-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Phillip M. Turner , Richard O. Gillett, Jr. , Stephen R. Pastor , Thomas A. Klingler , Xiaofeng Mao
Abstract: Methods and apparatus are provided for moving a receiver associated with a hitch frame of a vehicle. The method includes receiving data indicating a hand wheel angle; determining, with a processor, a position for the receiver relative to the hitch frame based on the hand wheel angle; and outputting one or more control signals to a motor coupled to the receiver to move the receiver relative to a longitudinal axis of the vehicle based on the determination.
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公开(公告)号：US09150245B2
公开(公告)日：2015-10-06
申请号：US13747048
申请日：2013-01-22
Applicant: GM Global Technology Operations LLC
Inventor： Kenneth L. Oblizajek , Stephen R. Pastor , David M. Caldwell , John D. Sopoci
CPC classification number: B62D15/025 , B62D6/00 , G01S19/13
Abstract: Methods and systems are provided for controlling a steering system of a vehicle is provided. A detection unit is configured to obtain one or more of the following values: a compass heading, a global positioning system (GPS) heading, a yaw velocity, and a difference in tire angular velocities. A processor is coupled to the detection unit, and is configured to determine whether a vehicle is on a straight line path using one or more of the compass heading, the GPS heading, the yaw velocity, and the difference in tire angular velocities, activate the steering system if it is determined that the vehicle is on a straight line path, and disable the feature of the steering system if it is determined that the vehicle is not on a straight line path.
Abstract translation: 提供了用于控制车辆的转向系统的方法和系统。 检测单元被配置为获得以下值中的一个或多个：罗盘航向，全球定位系统（GPS）航向，偏航速度和轮胎角速度差。 处理器耦合到检测单元，并且被配置为使用一个或多个罗盘航向，GPS航向，偏航速度和轮胎角速度差来确定车辆是否在直线路径上，激活 如果确定车辆处于直线路径上，并且如果确定车辆不在直线路径上则禁用转向系统的特征。
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公开(公告)号：US09663142B2
公开(公告)日：2017-05-30
申请号：US14845779
申请日：2015-09-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Stephen R. Pastor , Phanu Amatyakul , Keun Jae Kim
Abstract: Methods and systems are provided for aligning a steering system of a vehicle. In one embodiment, a method includes: determining when the vehicle is driving a straight-line path; determining a steering wheel position error when the vehicle is driving the straight-line path; computing a rear wheel steering offset based on the steering wheel position error and a closed loop control method; and generating a control signal to a rear wheel steering system based on the rear wheel steering offset.
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公开(公告)号：US10183696B2
公开(公告)日：2019-01-22
申请号：US14844964
申请日：2015-09-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Kenneth L. Oblizajek , Stephen R. Pastor , David M. Caldwell , John D. Sopoci
Abstract: Methods and systems are provided for controlling a steering system of a vehicle is provided. A detection unit is configured to obtain a compass heading, a global positioning system (GPS) heading, or both. A processor is coupled to the detection unit, and is configured to determine whether a vehicle is on a straight line path using the compass heading, the GPS heading, or both, and to selectively implement a feature of the steering system based on whether it is determined that the vehicle is not on a straight line path.
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公开(公告)号：US09604649B1
公开(公告)日：2017-03-28
申请号：US15042883
申请日：2016-02-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Stephen R. Pastor , Kenneth L. Oblizajek , Jin-Woo Lee
CPC classification number: B60W40/09 , B60W2510/202 , B60W2520/28 , B62D15/00 , B62D15/025
Abstract: A method and system for determining whether a driver of a vehicle is in contact with a steering wheel of the vehicle is provided. One embodiment of the method includes the steps of generating a perturbation signal that causes vibration of the steering wheel and receiving a steering signal from a steering system sensor configured to provide an indication of at least one of a steering torque and a steering movement of a component of an electronic power steering system of the vehicle. The method further includes the steps of mixing the perturbation signal and the steering signal to produce a heterodyne signal and generating a driver contact signal indicative of whether the driver of the vehicle is in contact with the steering wheel of the vehicle, the value of the driver contact signal dependent on characteristics of the heterodyne signal relating to the perturbation signal.
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