公开(公告)号：US12179781B2

公开(公告)日：2024-12-31

申请号：US18060755

申请日：2022-12-01

Applicant: GM Global Technology Operations LLC

Inventor： SeyedAlireza Kasaiezadeh Mahabadi ,  Hualin Tan ,  Ruixing Long ,  Bharath Pattipati ,  Bo Yu

IPC: B60W50/10 ,  B60W50/00

Abstract: A driver command interpreter system for a vehicle includes one or more controllers that execute instructions to receive a plurality of dynamic variables, vehicle configuration information, and driving environment conditions, and determine a target vehicle state during transient driving conditions based on the plurality of dynamic variables from the one or more sensors, the vehicle configuration information, and the driving environment conditions. The one or more controllers build a transient vehicle dynamic model based on the target vehicle state during transient driving conditions, the plurality of dynamic variables, the vehicle configuration information, and the driving environment conditions, and solve for desired zeros corresponding to the target vehicle state during transient conditions.

公开(公告)号：US11787414B2

公开(公告)日：2023-10-17

申请号：US17383987

申请日：2021-07-23

Applicant: GM Global Technology Operations LLC

Inventor： Nikolai K. Moshchuk ,  David Perez-Chaparro ,  Kausalya Singuru ,  Hualin Tan ,  Jin-Jae Chen ,  Ping Mi

IPC: B60W40/068 ,  B60W60/00 ,  B60W30/02

CPC classification number: B60W40/068 ,  B60W60/001 ,  B60W30/02 ,  B60W2520/14 ,  B60W2520/20 ,  B60W2530/20

Abstract: A vehicle and a system and method of controlling the vehicle. The system includes a sensor and a processor. The sensor obtains a first estimate of a force on a tire of the vehicle based on dynamics of the vehicle. The processor is configured to obtain a second estimate of the force on the tire using a tire model, determine an estimate of a coefficient of friction between the tire and the road from the first estimate of the force and the second estimate of the force, and control the vehicle using the estimate of the coefficient of friction.

公开(公告)号：US11780449B2

公开(公告)日：2023-10-10

申请号：US17448907

申请日：2021-09-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ehsan Asadi ,  Seyedeh Asal Nahidi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Hualin Tan

IPC: B60W40/109 ,  B60W40/114 ,  B60W40/068 ,  B60W10/20

CPC classification number: B60W40/109 ,  B60W10/20 ,  B60W40/068 ,  B60W40/114 ,  B60W2520/125 ,  B60W2520/14 ,  B60W2520/263 ,  B60W2552/40 ,  B60W2720/125 ,  B60W2720/14

Abstract: Systems and methods for vehicle motion control are provided. The method includes: calculating a correction factor using one of three different sets of operations when the vehicle is performing a limit handling maneuver, wherein the correction factor is calculated using a first set of operations when the vehicle is operating in an understeer state, calculated using a second set of operations when the vehicle is operating in an oversteer state, and calculated using a third set of operations when the vehicle is operating in a neutral steer state; adjusting a desired lateral acceleration and a desired yaw rate by applying the correction factor to account for a reduced level of friction experienced by the vehicle when traveling on a non-ideal friction surface; calculating optimal control actions based on the adjusted desired lateral acceleration and adjusted desired yaw rate; and applying the optimal control actions with vehicle actuators during vehicle operations.

公开(公告)号：US11529948B2

公开(公告)日：2022-12-20

申请号：US16392005

申请日：2019-04-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Seyedeh Asal Nahidi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  James H. Holbrook ,  John R. Yost ,  Hualin Tan ,  Xueying Kang ,  Bakhtiar B. Litkouhi

IPC: B60W30/02 ,  B60W50/10

Abstract: A vehicle, and a method and system for operating the vehicle. The system includes a processor. The processor receives a driver input at the vehicle, determines a current lateral force on a tire of the vehicle for the driver input, determines a desired yaw rate and lateral velocity for the vehicle based on the current lateral force on the tire that operates the vehicle at a maximum yaw moment, and operates the vehicle at the desired yaw rate and lateral velocity.

公开(公告)号：US20220153070A1

公开(公告)日：2022-05-19

申请号：US16952799

申请日：2020-11-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kausalya Singuru ,  Bakhtiar B. Litkouhi ,  Hualin Tan

IPC: B60C23/06 ,  B60T8/172 ,  B60C23/04

Abstract: A tire radius monitoring system for dynamically determining a tire effective radius for each of the wheels on a vehicle is described. The system includes a GPS sensor, a plurality of wheel speed sensors, and a controller. The controller determines, via the GPS sensor, a velocity vector related to longitudinal velocity of the vehicle. The controller determines wheel speeds for the plurality of vehicle wheels, and detects a no-wheel-slip state for the vehicle wheels and the velocity vector from the GPS sensor. The controller determines tire effective radii for the plurality of vehicle wheels based upon the velocity vector for the vehicle and the wheel speeds for the plurality of vehicle wheels during the no-wheel-slip state, and controls vehicle operation based upon the tire effective radii.

公开(公告)号：US20170088200A1

公开(公告)日：2017-03-30

申请号：US15093071

申请日：2016-04-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Edward T. Heil ,  Jason S. Rhee ,  Hualin Tan ,  Joshua R. Auden ,  Jason D. Fahland

IPC: B62D37/02 ,  B62D35/00

CPC classification number: B62D37/02 ,  B62D35/005 ,  B62D35/007

Abstract: A system is configured to control aerodynamics of a vehicle. The vehicle includes a body having a front end facing oncoming ambient airflow. The system includes a vehicle control device for receiving operator input to command a target vehicle dynamic response. A vehicle subsystem adjusts an actual vehicle dynamic response to the operator input. The system also includes an adjustable aerodynamic-aid element and a mechanism for varying the element's position to control movement of the airflow relative to the vehicle. At least one sensor detects the adjusted actual vehicle dynamic response and communicates a feedback signal indicative of the detected vehicle dynamic response to a controller. The controller also determines a target position for the aerodynamic-aid element using the detected adjusted actual vehicle dynamic response and regulates the aerodynamic-aid element to its target position via the mechanism to control the aerodynamics and achieve the target dynamic response of the vehicle.

公开(公告)号：US09340212B2

公开(公告)日：2016-05-17

申请号：US14291501

申请日：2014-05-30

Applicant: GM Global Technology Operations LLC

Inventor： Xuefeng Tim Tao ,  Richard L. Tiberg ,  Thomas M. Sherman ,  David William Minner ,  Hualin Tan

IPC: G05D1/00 ,  B60W40/076 ,  B60W40/107

CPC classification number: B60W40/076 ,  B60W30/188 ,  B60W40/107 ,  B60W2050/0085 ,  B60W2050/0215 ,  B60W2050/043 ,  B60W2510/104 ,  B60W2520/105 ,  B60W2520/28 ,  B60W2550/13

Abstract: A system according to the principles of the present disclosure includes a longitudinal acceleration estimation module, a vehicle longitudinal acceleration sensor, a road grade estimation module, and an actuator control module. The longitudinal acceleration estimation module estimates a longitudinal acceleration of a vehicle based on at least one of a transmission output speed and a wheel speed. The vehicle longitudinal acceleration sensor measures the longitudinal acceleration of the vehicle. The road grade estimation module estimates a grade of a road on which the vehicle is traveling based on the estimated longitudinal acceleration and the measured longitudinal acceleration. The actuator control module controls an actuator of the vehicle based on the estimated road grade.

Abstract translation: 根据本公开的原理的系统包括纵向加速度估计模块，车辆纵向加速度传感器，道路等级估计模块和致动器控制模块。 纵向加速度估计模块基于变速器输出速度和车轮速度中的至少一个来估计车辆的纵向加速度。 车辆纵向加速度传感器测量车辆的纵向加速度。 道路等级估计模块基于估计的纵向加速度和测量的纵向加速度来估计车辆行驶的道路的坡度。 执行器控制模块基于估计的道路等级来控制车辆的致动器。

公开(公告)号：US12017660B2

公开(公告)日：2024-06-25

申请号：US17518237

申请日：2021-11-03

Applicant: GM Global Technology Operations LLC

Inventor： Hassan Askari ,  Seyedeh Asal Nahidi ,  Shamim Mashrouteh ,  Ruixing Long ,  Bharath Pattipati ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Hualin Tan ,  Lapo Frascati

IPC: B60W40/101 ,  B60C23/04 ,  B60W30/02 ,  B60W40/12

CPC classification number: B60W40/101 ,  B60C23/0486 ,  B60W30/02 ,  B60W40/12 ,  B60W2520/26

Abstract: A system for adaptive tire force prediction in a motor vehicle includes a control module that executes program code portions that receive real-time static and dynamic data from motor vehicle sensors, that model forces at each tire of the motor vehicle at one or more incremental time steps, that estimate actual forces at each tire of the motor vehicle at each of the one or more incremental time steps, that adaptively predict tire forces at each tire of the motor vehicle at each of the one or more incremental time steps, that generate one or more control commands for actuators of the motor vehicle, that capture discrepancies between real-time force estimations and nominal force calculations at each tire of the motor vehicle, and that apply compensation parameters to reduce tracking errors in the one or more control commands to the one or more actuators of the motor vehicle.

公开(公告)号：US20240182053A1

公开(公告)日：2024-06-06

申请号：US18060755

申请日：2022-12-01

Applicant: GM Global Technology Operations LLC

Inventor： SeyedAlireza Kasaiezadeh Mahabadi ,  Hualin Tan ,  Ruixing Long ,  Bharath Pattipati ,  Bo Yu

IPC: B60W50/10

CPC classification number: B60W50/10 ,  B60W2050/0033

Abstract: A driver command interpreter system for a vehicle includes one or more controllers that execute instructions to receive a plurality of dynamic variables, vehicle configuration information, and driving environment conditions, and determine a target vehicle state during transient driving conditions based on the plurality of dynamic variables from the one or more sensors, the vehicle configuration information, and the driving environment conditions. The one or more controllers build a transient vehicle dynamic model based on the target vehicle state during transient driving conditions, the plurality of dynamic variables, the vehicle configuration information, and the driving environment conditions, and solve for desired zeros corresponding to the target vehicle state during transient conditions.

公开(公告)号：US11987252B2

公开(公告)日：2024-05-21

申请号：US17447192

申请日：2021-09-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Naser Mehrabi ,  Saurabh Kapoor ,  Seyedeh Asal Nahidi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  James H Holbrook ,  Hualin Tan ,  Bakhtiar B Litkouhi

IPC: B62D15/02 ,  B60W40/101

CPC classification number: B60W40/101 ,  B62D15/021 ,  B60W2510/207 ,  B60W2520/263

Abstract: Systems and methods for determining whether a vehicle is in an understeer or oversteer situation. The system includes a controller circuit coupled to an IMU and an EPS, and programmed to: calculate, for a steered first axle, an axle-based pneumatic trail for using IMU measurements and EPS signals and estimate a saturation level as a function of a distance between the axle-based pneumatic trail and zero. The system estimates, for an unsteered second axle, an axle lateral force curve with respect to a slip angle of the second axle, and a saturation level as a function of when the axle lateral force curve with respect to the slip angle transitions from positive values to negative values. The saturation level of the first axle and the second axle are integrated. The system determines that the vehicle is in an understeer or oversteer situation as a function of the integrated saturation levels.