METHOD AND SYSTEM FOR FAULT ISOLATION IN AN ELECTRIC POWER STEERING SYSTEM

    公开(公告)号:US20170253268A1

    公开(公告)日:2017-09-07

    申请号:US15059932

    申请日:2016-03-03

    CPC classification number: B62D5/0481

    Abstract: A method of isolating a fault in an electric power steering system includes calculating a value for fault signature components. Each of the calculated values of the fault signature components is compared to a respective threshold value, to determine if any of the calculated values of the fault signature components exceeds its respective threshold value. When at least one of the calculated values of the plurality of fault signature components exceeds its respective threshold value, the above threshold comparison results are compared to a fault table that relates pre-calculated threshold comparison results to pre-identified faults, to determine if the above threshold comparison results correspond to a pre-identified fault. Based on the fault table comparison results, a control action is automatically executed to indicate a pre-identified fault or an unknown fault in the electric power steering system.

    Virtual lane mark generation
    13.
    发明授权

    公开(公告)号:US12190608B2

    公开(公告)日:2025-01-07

    申请号:US17738328

    申请日:2022-05-06

    Abstract: A vehicle, system method for operating the vehicle is disclosed. The system includes a camera and a processor. The camera is configured to obtain a camera image of a road segment. The processor determines a location of a road edge for the road segment within the camera image, obtains a lane attribute for the road segment, generates a virtual lane mark for the road segment based on the road edge and the lane attribute, and moves the vehicle along the road segment by tracking the virtual lane mark.

    SYSTEM AND METHOD FOR TIRE BLOWOUT DETECTION USING WHEEL SPEEDS

    公开(公告)号:US20240383468A1

    公开(公告)日:2024-11-21

    申请号:US18318934

    申请日:2023-05-17

    Abstract: A vehicle includes a system performing a method of controlling an operation of the vehicle during a tire blowout. The system includes a vehicle dynamics sensor for detecting a dynamic parameter of the vehicle, tire sensors for detecting wheel speeds of wheels of the vehicle, and a processor. The processor is configured to receive a velocity of the vehicle from the vehicle dynamics sensor and the wheel speeds from the tire sensors, determine a diagonal product ratio of the wheel speeds, compare the diagonal product ratio to a range to detect an occurrence of a tire blowout, identify a location of the tire blowout from a wheel speed ratio based on wheels that are diagonally opposite each other, and control the operation of the vehicle in response to the tire blowout.

    VEHICLE OSCILLATION CONTROL
    15.
    发明公开

    公开(公告)号:US20240359734A1

    公开(公告)日:2024-10-31

    申请号:US18308803

    申请日:2023-04-28

    CPC classification number: B62D6/008 B62D15/00

    Abstract: Techniques are provided for vehicle oscillation control. In one embodiment, the techniques involve identifying an oscillation at a steering wheel or steering column of a vehicle, upon determining that the oscillation exceeds an oscillation of interest threshold, identifying the oscillation as an oscillation of interest, classifying a cause of the oscillation of interest, and mitigating the oscillation of interest based on the classification of the cause.

    Detection of a friction brake fault

    公开(公告)号:US11220251B2

    公开(公告)日:2022-01-11

    申请号:US16013203

    申请日:2018-06-20

    Abstract: A method of identifying a fault in a friction brake actuated by hydraulic brake pressure and configured to decelerate a vehicle road wheel includes detecting, via a first sensor, a vibration at the road wheel and communicating data indicative of the detected vibration to a controller. The method additionally includes detecting, via a second sensor, upon application of the hydraulic brake pressure, a hydraulic brake pressure variation and communicating data indicative of the detected hydraulic brake pressure variation. The method additionally includes comparing, via the controller, the data indicative of the detected vibration with a threshold vibration value and the data indicative of the detected hydraulic brake pressure variation with a threshold hydraulic brake pressure value. Furthermore, the method includes generating a sensory signal indicative of the brake fault when magnitudes of the detected vibration and the detected hydraulic brake pressure variation are greater than their respective threshold values.

    CONTROLLING OPERATION OF A VEHICLE WITH A SUPERVISORY CONTROL MODULE HAVING A FAULT-TOLERANT CONTROLLER

    公开(公告)号:US20200339140A1

    公开(公告)日:2020-10-29

    申请号:US16395825

    申请日:2019-04-26

    Abstract: System and method for controlling operation of a vehicle in real-time with a supervisory control module. A fault detection module is configured to receive respective sensor data from one or more sensors in communication with the vehicle and generate fault data. The supervisory control module includes at least one fault-tolerant controller configured to respond to a plurality of faults. The supervisory control module is configured to receive the fault data. When at least one fault is detected from the plurality of faults, the supervisory control module is configured to employ the fault-tolerant controller to generate at least one selected command. The selected command is transmitted to one or more device controllers for delivery to at least one of the respective components of the vehicle. Operation of the vehicle is controlled based in part on the selected command.

    ANTI-LOSS-OF-ASSISTANCE FOR ELECTRIC MOTOR
    19.
    发明申请

    公开(公告)号:US20190176873A1

    公开(公告)日:2019-06-13

    申请号:US15840270

    申请日:2017-12-13

    CPC classification number: B62D5/0463 B62D5/0481 B62D6/10

    Abstract: A method of operating an electric power steering system installed on a vehicle. The electric power steering system includes a controller that receives a desired assist torque value and supplies a pulse-width modulation duty cycle to an electric motor. The method includes the step of controlling the electric motor to achieve a nominal value of power steering assist torque when the electrical power available to the motor is sufficient to achieve the nominal value of power steering assist torque. The method further includes the step of controlling the electric motor to achieve a reduced value of power steering assist torque less than the nominal value when the electrical power available to the motor is not sufficient to achieve the nominal value of power steering assist torque.

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