Hybrid brake systems and methods for load cell calibration

    公开(公告)号:US11970263B2

    公开(公告)日:2024-04-30

    申请号:US17668647

    申请日:2022-02-10

    CPC classification number: B64C25/44 B60T8/1703 B60T17/221 B60T13/741

    Abstract: A braking system for an aircraft may comprise: a brake assembly; a hydraulic braking subsystem having a hydraulic brake actuator configured to operate the brake assembly; an electric braking subsystem having an electric brake actuator configured to operate the brake assembly and a load cell configured to measure a force supplied by the electric brake actuator; a hydraulic brake control unit configured to control the hydraulic braking subsystem; and an electric brake control unit configured to control the electric braking subsystem, the electric brake control unit in operable communication with the hydraulic brake control unit, the electric brake control unit configured to calibrate the load cell by a scale factor based on a measured force from the load cell, a measured hydraulic pressure used to exceed the measured force received from the hydraulic brake control unit, and a piston area of the hydraulic brake actuator.

    SYSTEMS AND METHODS FOR AIRCRAFT AUTOBRAKE CONTROL

    公开(公告)号:US20210331786A1

    公开(公告)日:2021-10-28

    申请号:US17208938

    申请日:2021-03-22

    Inventor: Marc Georgin

    Abstract: An autobrake system includes a brake control unit (BCU), and a control knob in electronic communication with the BCU. The BCU is configured to receive a position signal from the control knob, the position signal corresponding a position of the control knob. The BCU is configured to select a braking deceleration based upon the position signal, wherein the braking deceleration continuously changes between a minimum braking deceleration and a maximum deceleration in response to the control knob moving between a first position and a second position for fine tuning of the braking deceleration.

    Deceleration pedal control for braking systems

    公开(公告)号:US10710561B2

    公开(公告)日:2020-07-14

    申请号:US16290420

    申请日:2019-03-01

    Inventor: Marc Georgin

    Abstract: Systems and methods for aircraft braking are disclosed. The systems and methods may comprise a control mode executive configured to receive a pedal input and calculate a gear deceleration command comprising a desired deceleration rate based on the pedal input; a pedal deceleration controller in electronic communication with the control mode executive configured to receive the gear deceleration command from the control mode executive and calculate a gear pedal command based on at least one of the gear deceleration command and a deceleration feedback; and a pedal executive in electronic communication with the pedal deceleration controller configured to receive the gear pedal command, and generate a pedal braking command based on the gear pedal command.

    PROGNOSTICS FOR PRESSURE SENSORS OF HYDRAULIC BRAKE SYSTEMS

    公开(公告)号:US20190232937A1

    公开(公告)日:2019-08-01

    申请号:US15884177

    申请日:2018-01-30

    Abstract: A method of performing prognostics on a hydraulic brake system of an aircraft may include determining, during primary braking mode and by a hydraulic brake controller, a first status of a first brake pressure sensor adjacent a brake assembly. The method may also include, in response to determining that the first status of the first brake pressure sensor is valid, determining, during park braking mode and by the hydraulic brake controller, a second status of a second brake pressure sensor adjacent a park valve assembly. In response to determining that the first status of the first brake pressure sensor is degraded, the method may include outputting, by the hydraulic brake controller, at least one of an inspection indicator and a maintenance indicator.

    Anti-skid protection with undetected pressure sensor failure

    公开(公告)号:US09975628B2

    公开(公告)日:2018-05-22

    申请号:US14981235

    申请日:2015-12-28

    CPC classification number: B64C25/46 B60T8/1703 B60T8/86 B60T17/18

    Abstract: A method for controlling brakes is provided. The method comprises detecting an imminent skid by an anti-skid controller/deceleration controller (ASK/DK). The ASK/DK outputs at least one of a negative desired pressure command to a pressure control unit (PK) in response to detecting the imminent skid and causes a current command output from the PK to be reduced to release braking pressure if the negative desired pressure command minus a measured feedback pressure is greater than a deadband of the PK or outputs a negative desired force command to a force control unit (ForK) in response to detecting the imminent skid and causing a current command output from the ForK to be reduced to release braking force if the negative desired force command minus a measured feedback force is greater than a deadband of the Fork. A brake control system is also provided.

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