公开(公告)号：US11651633B2

公开(公告)日：2023-05-16

申请号：US17325709

申请日：2021-05-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yubiao Zhang ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Seyedeh Asal Nahidi ,  Naser Mehrabi ,  Hualin Tan ,  Bakhtiar B. Litkouhi

IPC: G07C5/08

CPC classification number: G07C5/0808

Abstract: A system includes a clutch state module and a clutch torque module. The clutch state module is configured to determine whether a clutch of an electronic limited slip differential is locked or unlocked. The electronic limited slip differential couples an engine of a vehicle to left and right wheels of the vehicle. The clutch torque module is configured to estimate an actual torque transferred by the clutch using a first clutch torque model when the electronic limited slip differential is unlocked, and estimate the actual clutch torque using a second clutch torque model when the electronic limited slip differential is locked. The second clutch torque model is different than the first clutch torque model.

公开(公告)号：US20230139179A1

公开(公告)日：2023-05-04

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 ,  B60W40/12 ,  B60W30/02 ,  B60C23/04

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：US20220194377A1

公开(公告)日：2022-06-23

申请号：US17126784

申请日：2020-12-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez ,  Yiran Hu ,  Hualin Tan ,  Daniel L. Baibak ,  Ruixing Long

IPC: B60W30/182 ,  B60W10/04 ,  B60W50/08 ,  B60W40/114 ,  B60W40/109 ,  B60W40/08 ,  B60W10/20 ,  B60W10/18 ,  B60W40/105

Abstract: The concepts described herein relate to a calculation of desired future longitudinal horizons related to torque or acceleration, and desired future lateral horizons related to yaw rate and lateral velocity, and their use in response to driver-selectable modes. In the longitudinal direction, driver inputs of pedal and brake position as well as drivability metrics are used to calculate the desired future torque trajectory. In the lateral direction, the front and rear steering angles may be used with a bicycle model to derive the trajectories. The trajectories are used in a vehicle motion controller that uses weighting to tradeoff competing requests and deliver performance that is consistent with a selected driver mode, such as a tour mode, a sport mode, an off-road mode, a trailering mode, etc.

公开(公告)号：US20220161874A1

公开(公告)日：2022-05-26

申请号：US17103764

申请日：2020-11-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B62D37/02 ,  B62D15/02 ,  B62D35/00

Abstract: Systems and methods are provided for generating a downforce on a vehicle. An aerodynamic deflector on the vehicle is repositionable. An actuator is coupled with the aerodynamic deflector. A controller configured to: detect a performance mode of operation of the vehicle; determine a requested lateral acceleration; calculate a control adjustment of the aerodynamic deflector to generate a downforce to achieve the requested lateral acceleration and maximize lateral grip of the vehicle; and operate the actuator to effect the control adjustment of the aerodynamic deflector to generate the downforce on the vehicle.

公开(公告)号：US11097743B2

公开(公告)日：2021-08-24

申请号：US16394890

申请日：2019-04-25

Applicant: GM Global Technology Operations LLC

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

IPC: B60W40/13 ,  B60W30/02

Abstract: A method and system of controlling a vehicle includes providing a plurality of dynamic state inputs to a controller in the vehicle that is adapted to execute a plurality of control loops and further includes determining an operating mode of the vehicle. Based on the operating mode of the vehicle, a location of an optimum perceived yaw center of the vehicle is determined corresponding to a selected estimation technique using the dynamic state inputs and wherein the estimation technique is selected based upon the determined operating mode of the vehicle. The information related to the location of the optimum perceived yaw center may be used as input for controlling the vehicle in a dynamic state.

公开(公告)号：US20210245732A1

公开(公告)日：2021-08-12

申请号：US16787698

申请日：2020-02-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Seyedeh Asal Nahidi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  James H. Holbrook ,  Hualin Tan ,  Bakhtiar B. Litkouhi

IPC: B60W30/02 ,  B60K17/02 ,  B60K17/16 ,  B60W10/30 ,  B60W10/02 ,  B60K17/22 ,  B60W10/08

Abstract: A method of controlling stability of a vehicle and a stability control system for the vehicle. A driver command is determined based on driver input data. At least one output command is sent to one or more vehicle systems to control stability of the vehicle based on the driver command. A controller sends the output command based on a control hierarchy that provides an order in which the controller controls body motion of the vehicle, wheel slip of the vehicle, and standard stability of the vehicle to control stability of the vehicle. The order dictates that the controller controls the body motion of the vehicle and the wheel slip of the vehicle before the controller controls the standard stability of the vehicle. A state of one or more of the vehicle systems is controlled based on the sent output command as dictated via the control hierarchy.

公开(公告)号：US20200339104A1

公开(公告)日：2020-10-29

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：US10065688B2

公开(公告)日：2018-09-04

申请号：US15212929

申请日：2016-07-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B62D37/02 ,  B62D35/00

Abstract: A vehicle includes a motor for propelling the vehicle and at least one active aerodynamic element configured to generate a variable amount of aerodynamic downforce on the vehicle when the vehicle is in motion. The vehicle also includes at least one driver input sensor configured to detect a driver input and generate a feedforward signal indicative of a desired behavior of the vehicle. The vehicle additionally includes a controller in communication with the at least one driver input sensor and the at least one active aerodynamic element and configured to regulate the at least one active aerodynamic element at least partially in response to the feedforward signal. A method for controlling such an active aerodynamic element and a system for controlling an aerodynamic downforce on a vehicle are also disclosed.

公开(公告)号：US09996986B2

公开(公告)日：2018-06-12

申请号：US14471222

申请日：2014-08-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hualin Tan ,  Kevin A. O'Dea

IPC: G01C25/00 ,  G07C5/00 ,  G01C21/26 ,  G01R31/00 ,  G01R35/00

CPC classification number: G07C5/00 ,  G01C25/00 ,  G01R31/006 ,  G01R35/005

Abstract: Systems, processes, and techniques for calibrating an onboard sensor of a vehicle are presented here. The vehicle has a control system that is capable of performing at least some of the tasks related to the calibration procedure. An exemplary methodology collects vehicle status data and obtains navigation map data during operation of the vehicle. A current calibration factor is calculated for the onboard sensor, based on the collected vehicle status data and the obtained navigation map data. More specifically, the vehicle status and navigation map data can be used to determine when the current conditions are suitable for performing calibration. When the current conditions are satisfactory, the calibration factor is calculated. Thereafter, the onboard sensor can be calibrated in response to the current calibration factor.

公开(公告)号：US09828044B2

公开(公告)日：2017-11-28

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: B60W10/00 ,  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.