公开(公告)号：US11577707B2

公开(公告)日：2023-02-14

申请号：US16662060

申请日：2019-10-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohsen Mehdizade ,  Edward T. Heil

IPC: B60T8/94 ,  B60T8/17 ,  B60T8/171 ,  B60T8/34 ,  B60T8/88

Abstract: Braking systems and methods for an autonomous vehicle are provided. Braking devices are associated with respective wheels of the autonomous vehicle. A hydraulic circuit is connected between a primary braking module (PBM) and the braking devices and connected between a secondary braking module (SBM) and the braking devices. One of a PBM electronic control unit and a SBM electronic control unit is configured to: in response to detecting a communications failure of the other braking module, apply a predetermined hydraulic pressure operation in the hydraulic circuit. The other of the PBM electronic control unit and the SBM electronic control unit is configured to identify, based on output from the at least one sensor, the predetermined hydraulic pressure operation being applied by the one of the PBM electronic control unit and the SBM electronic control unit, and select and execute a braking profile based thereon.

公开(公告)号：US20220161770A1

公开(公告)日：2022-05-26

申请号：US17102983

申请日：2020-11-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Todd J. Brinkman ,  Edward T. Heil ,  Douglas J. Spry ,  Steven G. Reini

IPC: B60T8/17 ,  B60T8/32 ,  B60T8/88 ,  B60T13/66

Abstract: An anti-lock braking system for a triple axle trailer having three axles and six wheels is disclosed. The system includes a first wheel speed sensor coupled to the first wheel of the trailer, a second wheel speed sensor coupled to the third wheel of the trailer, a spring mount pivotably coupled to the body of the trailer, a first suspension member coupled to the first wheel and to the spring mount and a second suspension member coupled to the second wheel and to the spring mount. The system includes a hydraulic braking actuator having a first channel coupled to the first wheel and the second wheel and a second channel coupled to the third wheel. The spring mount pivots in response to an applied brake torque to increase a normal force applied to the second wheel as compared to a normal force applied to the first wheel.

公开(公告)号：US20210122343A1

公开(公告)日：2021-04-29

申请号：US16662060

申请日：2019-10-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohsen Mehdizade ,  Edward T. Heil

IPC: B60T8/94 ,  B60T8/17 ,  B60T8/171 ,  B60T8/34 ,  B60T8/88

Abstract: Braking systems and methods for an autonomous vehicle are provided. Braking devices are associated with respective wheels of the autonomous vehicle. A hydraulic circuit is connected between a primary braking module (PBM) and the braking devices and connected between a secondary braking module (SBM) and the braking devices. One of a PBM electronic control unit and a SBM electronic control unit is configured to: in response to detecting a communications failure of the other braking module, apply a predetermined hydraulic pressure operation in the hydraulic circuit. The other of the PBM electronic control unit and the SBM electronic control unit is configured to identify, based on output from the at least one sensor, the predetermined hydraulic pressure operation being applied by the one of the PBM electronic control unit and the SBM electronic control unit, and select and execute a braking profile based thereon.

公开(公告)号：US10246139B2

公开(公告)日：2019-04-02

申请号：US15216238

申请日：2016-07-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joshua R. Auden ,  Jason D. Fahland ,  David Dominguez ,  Edward T. Heil

IPC: B62D35/00 ,  B62D37/02

Abstract: A multi-wheeled vehicle employing an active aerodynamic control system is described. A method for controlling the vehicle and the active aerodynamic control system includes determining states of parameters related to ride and handling of the vehicle, and determining a current tractive effort based upon the states of parameters related to ride and handling of the vehicle. A desired tractive effort is determined based upon an operator desired acceleration, and an available tractive effort is determined based upon an available downforce transferable to the wheels from the active aerodynamic control system and downforces of the wheels. The active aerodynamic control system controls the downforce on one of the wheels to control the current tractive effort responsive to the desired tractive effort.

公开(公告)号：US09950751B2

公开(公告)日：2018-04-24

申请号：US15229762

申请日：2016-08-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Edward T. Heil ,  Joshua R. Auden

IPC: B60J9/00 ,  B62D35/00 ,  G01M9/06 ,  B62D37/02 ,  G01M9/08

CPC classification number: B62D35/00 ,  B62D35/005 ,  B62D35/007 ,  B62D37/02 ,  G01M9/06 ,  G01M9/08

Abstract: A method can be executed to diagnose an aerodynamic system and includes the following steps: (a) determining, via a controller, a first expected downforce acting on an aerodynamic element of a vehicle based, at least in part, on a current position of the aerodynamic element relative to a vehicle body of the vehicle, wherein an electric motor is operatively coupled to the aerodynamic element; (b) determining, via the controller, a second expected downforce acting on the aerodynamic element of the vehicle based, at least in part, on an electrical current used to move the electric motor in order to move the aerodynamic element from the current position to another position; (c) determining a deviation, via the controller, based on the first expected downforce and the second expected downforce; and (d) controlling, via the controller, the aerodynamic element based, at least in part, on the deviation.

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：US20170088197A1

公开(公告)日：2017-03-30

申请号：US15252881

申请日：2016-08-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Edward T. Heil

IPC: B62D35/00 ,  G01M9/00 ,  B62D35/02

CPC classification number: B62D35/005 ,  B62D35/02 ,  G01M9/00 ,  G01M9/08 ,  Y02T10/82 ,  Y02T10/88

Abstract: A method of controlling a vehicle having an active aerodynamic feature includes sensing a static pressure adjacent to the active aerodynamic feature. An estimated aero force from measured pressure is calculated from the sensed static pressure adjacent the aerodynamic feature. The estimated aero force from measured pressure is compared to an estimated aero force from current vehicle operating conditions, to determine a deviation therebetween. A control signal including the deviation is sent to a vehicle control system, so that the vehicle control system may control a system of the vehicle based on the deviation.