公开(公告)号：US10650620B2

公开(公告)日：2020-05-12

申请号：US15700728

申请日：2017-09-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Brian K. Saylor ,  Joshua R. Auden ,  Robert P. Marble

IPC: G07C5/08 ,  B60G21/00

Abstract: Systems and methods to detect abnormalities within a stabilizer system for a vehicle. A method includes receiving suspension system data from one or more vehicle sensors, calculating a roll gradient from the suspension system data, determining whether the calculated roll gradient is greater than a predetermined roll gradient threshold, and setting a diagnostic notification if the calculated roll gradient is greater than the predetermined roll gradient threshold.

公开(公告)号：US10604197B2

公开(公告)日：2020-03-31

申请号：US15714072

申请日：2017-09-25

Applicant: GM Global Technology Operations LLC

Inventor： Samantha J. Bray ,  Timothy D. Demetrio ,  Philip C. Lundberg ,  Joshua R. Auden ,  Jason D. Fahland

IPC: B60R22/00 ,  E05F15/00 ,  G05D1/00 ,  G05D3/00 ,  G06F7/00 ,  G06F17/00 ,  B62D37/02 ,  B62D35/00 ,  G05B15/02 ,  F15D1/10 ,  G05D7/01

Abstract: Disclosed are downforce feedback systems for active aerodynamic devices, methods for making/using such systems, and vehicles equipped with a closed-loop downforce feedback system to govern operation of the vehicle's active aero device(s). A feedback control system for operating an active aerodynamic device of a motor vehicle includes one or more pressure sensors for detecting fluid pressures in one or more pneumatic or hydraulic actuators for moving the active aero device. A vehicle controller receives fluid pressure signals from these sensor(s), and calculates an actual downforce value from these signal(s). The controller retrieves a calibrated downforce value from mapped vehicle downforce data stored in memory, and determines if the actual downforce value differs from the calibrated value. If so, the controller determines a target position for a target downforce value for a current vehicle operating condition, and commands the actuator(s) to move the active aero device to the target position.

公开(公告)号：US10315710B2

公开(公告)日：2019-06-11

申请号：US15685664

申请日：2017-08-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jason D. Fahland ,  Joshua R. Auden ,  Olamide Akintewe

IPC: B62D35/00

Abstract: Disclosed are self-calibrating load sensor systems for active aerodynamics devices, methods for making or using such load sensor systems, and motor vehicles equipped with a self-calibrating load sensor system to govern operation of the vehicle's active aero device(s). An active aero sensing system includes a load sensor that mounts to the vehicle body, and detects downforces on the vehicle. A memory device stores mapped vehicle downforce data calibrated to the motor vehicle. A vehicle controller receives downforce signals generated by the load sensor, and calculates an average downforce value from these signals. The controller determines if the average downforce differs from a calibrated downforce value retrieved from the memory device. If so, the controller responsively applies an offset value to subsequent downforce signals received from the load sensor, and dynamically controls operation of the active aero device based, at least in part, on these signals modified by the offset value.

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：US20170158259A1

公开(公告)日：2017-06-08

申请号：US14959935

申请日：2015-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B62D35/00 ,  B62D37/02

CPC classification number: B62D35/005 ,  B60W2520/28 ,  B62D37/02

Abstract: A splitter system for a vehicle includes a splitter body having a first splitter body. The vehicle includes a vehicle body arranged along a longitudinal body axis and having a first vehicle body end configured to face oncoming ambient airflow. The splitter body is moveably mounted at the first vehicle body end and generates an aerodynamic downforce on the first vehicle body end when the vehicle is in motion. The splitter system also includes a mechanism configured to selectively translate the splitter body along the longitudinal body axis away from the first vehicle body end into the incident airflow and toward the first vehicle body end out of the incident airflow. The translation of the splitter body by the mechanism in turn adjusts the aerodynamic downforce generated by the splitter body on the first vehicle body end.

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：US10696336B2

公开(公告)日：2020-06-30

申请号：US15785559

申请日：2017-10-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jason D. Fahland ,  Joshua R. Auden

IPC: B62D37/02 ,  B62D35/00 ,  F16F9/53 ,  F16F15/027

Abstract: An automotive vehicle includes a body having an exterior surface and an aerodynamic member movably coupled to the exterior surface. The aerodynamic member has a first position with respect to the exterior surface and a second position with respect to the exterior surface. The first position presents a distinct aerodynamic profile from the second position. The vehicle additionally includes an actuator coupled to the aerodynamic member and configured to actuate the aerodynamic member between the first position and the second position. The vehicle further includes a damper coupled to the aerodynamic member. The damper is provided with magnetorheological fluid.

公开(公告)号：US20200172058A1

公开(公告)日：2020-06-04

申请号：US16208992

申请日：2018-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy D. Demetrio ,  Joshua R. Auden ,  John W. Pennala

IPC: B60T5/00 ,  F16D65/847 ,  B62D35/02

Abstract: An exemplary method for controlling a vehicle includes receiving, by a vehicle controller, sensor data representing a first operating condition of the vehicle from at least one sensor, determining, by the vehicle controller, a temperature of a vehicle braking system of the vehicle, determining, by the vehicle controller, if the temperature of the vehicle braking system exceeds a temperature threshold, and if the temperature of the vehicle braking system exceeds the temperature threshold, generating, by the vehicle controller, a control signal to move a moveable underbody feature from a first position to a second position.

公开(公告)号：US10322722B2

公开(公告)日：2019-06-18

申请号：US15293968

申请日：2016-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Brett T. Muller ,  Joshua R. Auden ,  Fred W. Huntzicker

IPC: B60W30/18 ,  G05D1/00 ,  B60W10/06 ,  B60W10/10 ,  B60W10/20 ,  B60W10/30 ,  B60R16/037

Abstract: A method of controlling an autonomously operating vehicle includes determining if the vehicle is currently occupied by a passenger, or if the vehicle is not currently occupied by a passenger. When the vehicle is currently occupied by a passenger, a vehicle controller controls at least one vehicle system to operate using a set of passenger present operating parameters. The set of passenger present operating parameters control the vehicle to provide a minimum level of passenger comfort. When the vehicle is not currently occupied by a passenger, the vehicle controller controls at least one vehicle system to operate using a set of passenger not-present operating parameters. The set of passenger not-present operating parameters control the vehicle for one of optimal energy efficiency, or for optimal vehicle diagnostic performance.