公开(公告)号：US20150375785A1

公开(公告)日：2015-12-31

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

IPC: B62D15/02 ,  G01S19/13

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 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.

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罗盘航向，全球定位系统（GPS）航向或两者。 处理器耦合到检测单元，并且被配置为确定车辆是否使用罗盘方位，GPS方位或两者在直线路径上，并且基于是否是直接路线，选择性地实现转向系统的特征 确定车辆不在直线路径上。

公开(公告)号：US20130073224A1

公开(公告)日：2013-03-21

申请号：US13678063

申请日：2012-11-15

Applicant: GM Global Technology Operations LLC

Inventor： KENNETH L. OBLIZAJEK ,  JOHN D. SOPOCI ,  JINSHUO ZHU

IPC: G01M17/02 ,  G06F19/00

CPC classification number: G01M17/02

Abstract: A system for characterizing a vehicle tire is provided. The system includes a testing assembly configured to support the vehicle tire. The assembly includes a force-moment transducer configured to gather force information from the vehicle tire in response to a stimulus on the vehicle tire. The system further includes an accelerometer coupled to the vehicle tire and configured to gather vibration information from the vehicle tire in response to the stimulus on the vehicle tire. The system further includes a post-processing system configured to receive the vibration information from the accelerometer and the force information from the force-moment transducer. The post-processing system is further configured to extract resonant frequencies from the vibration information and the force information.

Abstract translation: 提供一种用于表征车辆轮胎的系统。 该系统包括构造成支撑车辆轮胎的测试组件。 组件包括力矩传感器，其构造成响应于车辆轮胎上的刺激而从车辆轮胎收集力信息。 该系统还包括耦合到车辆轮胎并被配置为响应于车辆轮胎上的刺激而从车辆轮胎收集振动信息的加速度计。 该系统还包括后处理系统，其被配置为从加速度计接收振动信息和来自力 - 力矩传感器的力信息。 后处理系统还被配置为从振动信息和力信息中提取谐振频率。

公开(公告)号：US20130211677A1

公开(公告)日：2013-08-15

申请号：US13841031

申请日：2013-03-15

Applicant: GM Global Technology Operations LLC

Inventor： KENNETH L. OBLIZAJEK ,  JOHN D. SOPOCI ,  SURESH PURADCHITHASAN

IPC: B62D5/04

CPC classification number: B62D5/0472 ,  B62D5/046

Abstract: Methods and systems are provided for suppression of steering wheel vibrations generated by periodic disturbances in a vehicle steering system. An exemplary method reducing steering wheel vibrations caused by periodic disturbances involves determining a gross torque attributable to the periodic disturbances in the steering system, identifying a desired amount of suppression of the vibrations at the steering wheel, determining an offset torque based on the gross torque and the desired amount of suppression, and generating a motor command signal in a manner that is influenced by the offset torque. The motor drive command signal is provided to an electric motor coupled the steering wheel and/or the vehicle tires, and the motor drive command signal influences the torque applied by the motor to assist steering of the vehicle tires by the steering wheel in a manner that attenuates the vibrations communicated to the steering wheel by the desired amount.

Abstract translation: 提供了用于抑制由车辆转向系统中的周期性扰动产生的方向盘振动的方法和系统。 减少由周期性扰动引起的方向盘振动的示例性方法包括确定归因于转向系统中的周期性干扰的总转矩，识别期望的方向盘振动抑制量，基于总扭矩确定偏移扭矩， 期望的抑制量，并且以受偏移扭矩影响的方式产生电动机命令信号。 马达驱动指令信号被提供给耦合方向盘和/或车辆轮胎的电动马达，并且马达驱动指令信号影响由马达施加的扭矩，以辅助方向盘来转向车辆轮胎，方式如下： 衰减传递到方向盘的振动所需的量。

公开(公告)号：US20160305852A1

公开(公告)日：2016-10-20

申请号：US14690654

申请日：2015-04-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： KENNETH L. OBLIZAJEK ,  JOHN D. SOPOCI ,  IAN Y. HWA

IPC: G01M17/06

CPC classification number: G01M17/06

Abstract: Methods and apparatus are provided for determining steering performance. The method includes coupling at least one load source to the steering system, and coupling a portion of the steering system to an angle input source. The method also includes outputting one or more control signals by a processor to the at least one load source to apply a load to the steering system and outputting one or more control signals by the processor to the angle input source to apply an input to the steering system. The method includes receiving torque data indicating a performance of the steering system based on the load applied to the steering system by the at least one load source and the input applied by the angle input source.

Abstract translation: 提供了用于确定转向性能的方法和装置。 该方法包括将至少一个负载源耦合到转向系统，以及将转向系统的一部分耦合到角度输入源。 该方法还包括将处理器的一个或多个控制信号输出到至少一个负载源，以将负载施加到转向系统，并将处理器的一个或多个控制信号输出到角度输入源以将输入施加到转向 系统。 该方法包括基于由至少一个负载源施加到转向系统的负载和由角度输入源施加的输入来接收指示转向系统的性能的扭矩数据。

公开(公告)号：US20140207336A1

公开(公告)日：2014-07-24

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

IPC: B62D6/00

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。

公开(公告)号：US20180290501A1

公开(公告)日：2018-10-11

申请号：US15481988

申请日：2017-04-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： KENNETH L. OBLIZAJEK ,  JINSHUO ZHU ,  CHRISTOPHE A. STIRLEN

IPC: B60C11/24 ,  G01M17/02 ,  G07C5/08

Abstract: A method for evaluating a vehicle tire is provided. The method obtains, by at least one vehicle onboard motion sensor, vibration data associated with a corner of a vehicle, the vehicle tire being located at the corner; detects an inflation pressure value for the vehicle tire; receives, from a vehicle onboard computer system, tire age data associated with the vehicle tire; calculates remaining tread groove depth for the vehicle tire, based on the vibration data, the inflation pressure data, and the tire age data; and performs a task, based on the remaining tread groove depth for the vehicle tire, wherein the task comprises at least one of: presenting a notification of the remaining tread groove depth to a driver, and setting a code onboard the vehicle, wherein the code is associated with service notifications.

公开(公告)号：US20150375781A1

公开(公告)日：2015-12-31

申请号：US14316594

申请日：2014-06-26

Applicant: GM Global Technology Operations LLC

Inventor： KENNETH L. OBLIZAJEK ,  JOHN D. SOPOCI

IPC: B62D6/08 ,  B62D5/04

CPC classification number: B62D5/0472

Abstract: Methods and systems are provided for controlling an electric power steering system. In one embodiment, a method includes: storing a compensation table having compensation values that are associated with motor torque drive values; receiving a current motor torque drive signal; determining a compensation action the current motor torque drive signal; determining a compensation value based on the compensation action and the table; and generating a motor torque drive signal based on the compensation value.

Abstract translation: 提供了用于控制电动助力转向系统的方法和系统。 在一个实施例中，一种方法包括：存储具有与电动机转矩驱动值相关联的补偿值的补偿表; 接收当前的电动机转矩驱动信号; 确定当前电动机转矩驱动信号的补偿动作; 基于补偿动作和​​表来确定补偿值; 以及基于所述补偿值生成电动机转矩驱动信号。

公开(公告)号：US20150211959A1

公开(公告)日：2015-07-30

申请号：US14166356

申请日：2014-01-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： JINSHUO ZHU ,  KENNETH L. OBLIZAJEK ,  CHRISTOPHER A. STIRLEN ,  JOHN D. SOPOCI ,  ZACHARY M. SHEHABI

IPC: G01M7/02 ,  G01M17/02 ,  B60C99/00

CPC classification number: G01M7/02 ,  B60C99/006 ,  B60C2019/004 ,  G01M7/08 ,  G01M17/02 ,  G01M17/025

Abstract: Methods and systems are provided for determining frequencies associated with tire crown bending. The system includes a vibration generating device configured to excite vibrations through a tire. The system further includes a vibration sensing arrangement configured to sense vibrations at a plurality of sensing points on the tire. A computer is in communication with the vibration sensing arrangement and configured to determine a first frequency associated with bending of the crown of the tire based at least partially on phase differences between the sensed vibrations at the plurality of points on the tire.

Abstract translation: 提供了用于确定与轮胎冠部弯曲相关联的频率的方法和系统。 该系统包括被配置为通过轮胎激励振动的振动产生装置。 该系统还包括被配置为感测轮胎上的多个感测点处的振动的振动感测装置。 计算机与振动检测装置通信，并且被配置为至少部分地基于轮胎上的多个点处感测到的振动之间的相位差来确定与轮胎冠部的弯曲有关的第一频率。

公开(公告)号：US20140277946A1

公开(公告)日：2014-09-18

申请号：US13840030

申请日：2013-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： KENNETH L. OBLIZAJEK ,  JOHN D. SOPOCI ,  SURESH PURADCHITHASAN

IPC: B62D5/04

CPC classification number: B62D5/0472

Abstract: Methods and apparatus are provided for reducing steering wheel vibrations in electronic power steering systems. The apparatus includes a processor and performs a method that estimates an average angular wheel speed of at least one wheel of the vehicle; determines an average wheel angle from the average angular wheel speed; generates sine and cosine functions of the average angular wheel angle; processes the sine and cosine functions with a steering wheel torque signal received from a torque sensor to extract amplitude components of at least one of the sine and cosine functions; reconstructs the sine and cosine functions using the steering wheel torque signal; combines the sine and cosine functions to provide a control signal, and controls the EPS system via the control signal to attenuate smooth road shake vibrations in a steering wheel of the vehicle.

Abstract translation: 提供了用于减少电子助力转向系统中的方向盘振动的方法和装置。 该装置包括处理器，并且执行估计车辆的至少一个车轮的平均角轮速度的方法; 从平均角轮速度确定平均车轮角度; 产生平均角轮角度的正弦和余弦函数; 使用从扭矩传感器接收的方向盘扭矩信号处理正弦和余弦函数，以提取至少一个正弦和余弦函数的振幅分量; 使用方向盘扭矩信号重建正弦和余弦函数; 结合正弦和余弦功能来提供控制信号，并通过控制信号控制EPS系统，以衰减车辆方向盘中平稳的道路抖动振动。