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.

公开(公告)号：US20240294163A1

公开(公告)日：2024-09-05

申请号：US18177344

申请日：2023-03-02

Applicant: GM Global Technology Operations LLC

Inventor： Saurabh Kapoor ,  Hassan Askari ,  Mustafa Hakan Turhan ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Jason D. Fahland

IPC: B60W20/15 ,  B60W10/06 ,  B60W10/08 ,  B60W10/14

CPC classification number: B60W20/15 ,  B60W10/06 ,  B60W10/08 ,  B60W10/14 ,  B60W2720/26 ,  B60W2720/40

Abstract: A system to map control system configurations for vehicle torque actuators includes a control unit of a vehicle. A first torque actuator of a first power unit delivers torque to rear wheels of the vehicle, and a second torque actuator of a second power unit delivers torque to front wheels of the vehicle. Multiple input items are received by the control unit, including: multiple configurations; one or more operating points; multiple configuration classifications including: a torque constraint; a torque reference; and an enabling condition; and identification of one or more priority assignments. The priority assignments are applied to the configurations, the operating points and the configuration classifications to determine a control action as sensed vehicle operating conditions change. Individual ones of the configurations are mapped to a normalized torque split ratio.

公开(公告)号：US20240190451A1

公开(公告)日：2024-06-13

申请号：US18063250

申请日：2022-12-08

Applicant: GM Global Technology Operations LLC

Inventor： SeyedAlireza Kasaiezadeh Mahabadi ,  Ruixing Long ,  Hassan Askari ,  Shamim Mashrouteh ,  Saurabh Kapoor ,  Naser Mehrabi ,  Amir Abolhassani ,  Mansour Ataei

IPC: B60W50/04 ,  B60W40/02 ,  B60W50/02 ,  G07C5/08

CPC classification number: B60W50/045 ,  B60W40/02 ,  B60W50/0205 ,  G07C5/0808 ,  B60W2556/45

Abstract: A data health monitoring and recording system for a vehicle includes a data recording infrastructure and one or more controllers. The one or more controllers include a multi-layer control software architecture including two or more software layers. The one or more controllers execute instructions to monitor, by a health monitoring structure that is part of the multi-layer control software architecture, one or more parameters calculated by each of the two or more software layers. The one or more controllers compare a respective parameter of a respective software layer with a predetermined corresponding performance metric for a required time horizon. In response to determining the respective parameter of the respective software layer does not meet the predetermined corresponding performance metric for the required time horizon, a trigger that instructs the data recording infrastructure to record the parameters calculated by each of the two or more software layers is generated.

公开(公告)号：US20240025393A1

公开(公告)日：2024-01-25

申请号：US17812818

申请日：2022-07-15

Applicant: GM Global Technology Operations LLC

Inventor： Naser Mehrabi ,  Nauman Sohani ,  Mustafa Hakan Turhan ,  Saurabh Kapoor ,  Sresht Gurumoorthi Annadevara ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Hualin Tan ,  James H. Holbrook

IPC: B60W30/02 ,  B60W30/18

CPC classification number: B60W30/02 ,  B60W30/18172 ,  B60W2720/403 ,  B60W2720/20 ,  B60W2510/207 ,  B60W2540/10

Abstract: A system comprises a computer including a processor and a memory. The memory includes instructions such that the processor is programmed to: determine an occurrence of intentional drift event, and in response to determining the occurrence of the intentional drift event, determine a front torque target and a rear torque target.

公开(公告)号：US11820437B2

公开(公告)日：2023-11-21

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 ,  B62D35/00 ,  B62D15/02

CPC classification number: B62D37/02 ,  B62D15/021 ,  B62D35/005 ,  B62D35/007

Abstract: 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：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.