公开(公告)号：US20240286690A1

公开(公告)日：2024-08-29

申请号：US18173925

申请日：2023-02-24

Applicant: GM Global Technology Operations LLC

Inventor： Mohammad Pournazeri ,  Ehsan Asadi ,  Naser Mehrabi ,  SeyedAlireza Kasaiezadeh Mahabadi

IPC: B62D37/02 ,  B62D35/00

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

Abstract: A method for data driven downforce control of a vehicle includes receiving a first requested downforce at the front axle of a vehicle and a second requested downforce at the rear axle of the vehicle. The method further includes using a model-based control to determine a first position of the first aerodynamic body relative to the vehicle body and a second position of the second aerodynamic body relative to the vehicle body based on the first requested downforce and the second requested downforce. The model-based control is based on a predetermined aerodynamic map. The method includes commanding the first aerodynamic actuator to move the first aerodynamic body to the first position. The method includes commanding the second aerodynamic actuator to move the second aerodynamic body to the second position.

公开(公告)号：US12217558B2

公开(公告)日：2025-02-04

申请号：US18055479

申请日：2022-11-15

Applicant: GM Global Technology Operations LLC

Inventor： Saurabh Kapoor ,  Mustafa Hakan Turhan ,  Nauman Sohani ,  Hassan Askari ,  Naser Mehrabi ,  Ehsan Asadi ,  Sresht Gurumoorthi Annadevara ,  Seyedalireza Kasaiezadeh Mahabadi

IPC: G07C5/08

Abstract: A fault remediation system for a vehicle includes one or more controllers in electronic communication with one or more consumed interfaces and one or more provided interfaces. The one or more controllers execute instructions to receive, from the one or more consumed interfaces, a consumed signal and perform fault detection upon the consumed signal to determine the presence of an active fault within the consumed signal. In response to detecting an active fault with the consumed signal, the one or more controllers select a remediation state from a group of two or more prospective remediation states based on a significance analysis of the consumed signal. The one or more controllers evaluate a relevant subfunction that corresponds to the consumed signal that the remediation state addresses for the presence of remediation tolerance and generates arbitration instructions based on the remediation tolerance.

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：US20250019016A1

公开(公告)日：2025-01-16

申请号：US18350503

申请日：2023-07-11

Applicant: GM Global Technology Operations LLC

Inventor： Mohammad Pournazeri ,  Mustafa Hakan Turhan ,  Naser Mehrabi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Ehsan Asadi

IPC: B62D37/02 ,  B60W40/13

Abstract: A method for downforce control includes receiving vehicle inputs. The method includes determining a first normal-force request at the front axle and a second normal-force request at the rear axle using the purality of vehicle inputs and a prediction model. The prediction model is a combined state space model that integrates a half-car state space model and an actuator state space model, the half-car state space model is developed using a half-car model, and the actuator state space model is developed using a neural network model. The method further includes determining a first position of the first aerodynamic body relative to the vehicle body and a second position of the second aerodynamic body relative to the vehicle body based on the first normal-force request and the second normal-force request, respectively.

公开(公告)号：US11946515B1

公开(公告)日：2024-04-02

申请号：US18469009

申请日：2023-09-18

Applicant: GM Global Technology Operations LLC

Inventor： Arash Hashemi ,  Sresht Gurumoorthi Annadevara ,  Naser Mehrabi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Lapo Frascati

IPC: F16D48/06 ,  F16H48/34 ,  F16H48/20

CPC classification number: F16D48/06 ,  F16H48/34 ,  F16D2500/10425 ,  F16D2500/3115 ,  F16D2500/3117 ,  F16D2500/70647 ,  F16D2500/70668 ,  F16H2048/204

Abstract: A method for determining, in real-time, an electronic limited-slip differential (eLSD) clutch torque includes receiving vehicle data in real-time, wherein the vehicle data includes a torque request, determining a preliminary eLSD clutch torque using a neural network and the vehicle data, determining clutch torque bounds of the eLSD using a physics-based model, determining whether the preliminary eLSD clutch torque is outside the clutch torque bounds of the eLSD, adjusting the preliminary eLSD clutch torque using clutch torque bounds to determine a final clutch torque of the eLSD in response to determining that the preliminary eLSD clutch torque is outside the clutch torque bounds of the eLSD, and commanding, in real-time, the eLSD to apply the final clutch torque to a clutch of the eLSD.

公开(公告)号：US11724689B2

公开(公告)日：2023-08-15

申请号：US17447679

申请日：2021-09-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ehsan Asadi ,  Seyedeh Asal Nahidi ,  SeyedAlireza Kasaiezadeh Mahabadi ,  Yubiao Zhang ,  Hualin Tan ,  Naser Mehrabi

IPC: B60W30/02 ,  B60W40/109 ,  B60W40/103 ,  B60W40/114

CPC classification number: B60W30/02 ,  B60W40/103 ,  B60W40/109 ,  B60W40/114

Abstract: Systems and methods for controlling a vehicle are provided. The systems and methods include a sensor system and a processor configured to execute program instructions, to cause the at least one processor to: receive yaw rate values, lateral acceleration values and longitudinal velocity values for the vehicle from the sensor system, determine side slip angle parameter values based on the yaw rate values, lateral acceleration values and longitudinal velocity values, determine phase portrait angles based on the side slip angle parameter values and the yaw rate values, wherein the phase portrait angles each represent an angle between yaw rate and side slip angle for the vehicle in a phase portrait of yaw rate and side slip angle, detect or predict vehicle instability based at least on the phase portrait angles, and when vehicle instability is detected or predicted, control motion of the vehicle to at least partly correct the vehicle instability.

公开(公告)号：US20230079933A1

公开(公告)日：2023-03-16

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: B60W40/101 ,  B62D15/02

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：US20250022324A1

公开(公告)日：2025-01-16

申请号：US18350491

申请日：2023-07-11

Applicant: GM Global Technology Operations LLC

Inventor： Mohammad Pournazeri ,  Naser Mehrabi ,  Ehsan Asadi ,  SeyedAlireza Kasaiezadeh Mahabadi

IPC: G07C5/02 ,  B62D35/00

Abstract: A method for downforce control includes receiving a plurality of vehicle inputs from a vehicle. The plurality of vehicle inputs includes sensor data from a plurality of sensors of the vehicle. The method further includes determining a downforce acting on the vehicle, by: (a) determining a predicted half-car model uncertainties using a neural network; and (b) determining a front normal force at the front axle and a rear normal force at the rear axle using the vehicle inputs, the predicted half-car model uncertainties, and a half-car model. The method further includes determining a first position of the first aerodynamic body relative to the vehicle body and a second position of the second aerodynamic body relative to the vehicle body based on the front normal force at the front axle and a rear normal force at the rear axle, respectively.

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.