An electronic brake system and an operating method thereof are disclosed. Provided is an electronic brake system, according to the present embodiment, comprising: a first hydraulic pressure supply device for generating hydraulic pressure by means of an electric signal output in response to the displacement of a brake pedal; an oil pressure control unit including a first oil pressure circuit for controlling the hydraulic pressure of a first wheel cylinder and a second wheel cylinder, and a second oil pressure circuit for controlling the hydraulic pressure of a third wheel cylinder and a fourth wheel cylinder; and a second hydraulic pressure supply device which is connected between the first oil pressure circuit and the first and second wheel cylinders, and which generates hydraulic pressure by means of an electric signal if the first hydraulic pressure supply device and/or the oil pressure control unit malfunctions.

A braking apparatus for a vehicle and control method thereof is disclosed herein. According to an embodiment of the present disclosure, a control apparatus for a vehicle is provided, the apparatus comprising: an electronic control unit which calculates a target demand value based on a pedal signal, determines whether the target demand value and an actual demand value are the same as a preset value, and controls to increase or decrease the actual demand value; a front wheel control unit which receives the actual demand value from the electronic control unit and controls braking of a front wheel electro-mechanical brake; and a rear wheel control unit which receives the actual demand value from the electronic control unit and controls braking of a rear wheel electro-mechanical brake.

A system for controlling a parking brake in a vehicle includes an operator interface configured to receive inputs from an operator of the vehicle including a first input requesting that the parking brake transition from an applied state to a released state. The system further includes a brake controller configured to identify a condition in which the parking brake should remain in the applied state. The controller generates, in the absence of the condition, a brake control signal responsive to the first input configured to cause the parking brake to transition from the applied state to the released state and transmits the brake control signal to an electromechanical valve configured to control delivery of fluid pressure to the parking brake. The controller disregards, in the presence of the condition, the first input unless the operator enters an override code comprising a predetermined sequence of inputs through the operator interface.

A method for operating a brake system, which includes a power brake and a vehicle dynamics control, after detecting that the level in a brake fluid reservoir of the brake system has fallen below a minimum fill level. The method includes detecting a brake signal, advancing a power piston to a forward position in which the required brake pressure is achieved, ascertaining the amount of travel of the power piston from the home position to the current position, holding the brake pressure and further advancing the power piston by a correction distance if the brake pressure decreases during the holding. The method also includes retracting the power piston by the ascertained amount of travel after the braking process has ended and degrading the brake system when a limit value for the forward position of the power piston has been reached.

A method and system is provided for determining faults in a vehicle brake system. An electronic processor obtains a brake pedal signal from a brake pedal that indicates a driver intent to brake and obtains a vehicle braking response condition signal from a brake system feedback sensor. The electronic processor determines a fault state when (1) the brake pedal signal is indicative of no brake pedal movement and the vehicle braking response signal is indicative of a vehicle braking response occurring, or when (2) the brake pedal signal is indicative of brake pedal movement and the vehicle braking response condition signal is indicative of no occurrence of a vehicle braking response. The electronic processor controls an output of an audio or visual indication of a fault state and/or controls braking operation of the vehicle in response to the fault state.

A braking control device includes a pressure adjustment unit that adjusts a wheel pressure Pw of a wheel cylinder by a servo pressure Pu generated using an electric motor as a power source, a solenoid valve provided in a hydraulic pressure transmission path from the servo pressure Pu to the wheel pressure Pw, and a controller that controls the pressure adjustment unit. The controller calculates a pressure loss Pd in the solenoid valve based on an instruction pressure Ps calculated from a braking request amount Bs and the wheel pressure Pw. Then, the controller determines a target pressure Pt by adding the pressure loss Pd to the instruction pressure Ps, and controls the pressure adjustment unit based on the target pressure Pt.

A device for controlling a braking system of a vehicle may include a position sensor device which is designed to detect a position of a brake pedal and/or a piston of a main brake cylinder actuated by the brake pedal at multiple times, a pressure sensor device which is designed to detect a pressure in a fluid located in the cylinder at multiple times, and a control device which is designed to shift a braking assistance device into an activated state. The control device may make the shift when a temporal change of the detected position exceeds a predefined position gradient threshold value and/or if the distance between two detected positions exceeds a predefined position threshold value, wherein the position gradient threshold value or the position threshold value is provided according to a change in the detected pressure.

An emergency braking apparatus, may include: a first controller controlling a braking device; a pedal stroke sensor receiving pedal stroke information of a brake pedal; and a second controller connected to the first controller by a wire to control the first controller, based on the pedal stroke information, wherein the first controller may be wirelessly connected to the pedal stroke sensor and receive the pedal stroke information to control the braking device.

A brake pedaling simulator includes a base seat, a housing, a deceleration indication unit, a sensing unit, a control unit, and first and second pressure units including their respective first and second pressing members and biasing members. The first pressing member is pushed by a brake pedal of a vehicle to compress the first biasing member and to push the second pressing member that compresses the second biasing member. The deceleration indication unit includes a movable slidable block. The sensing unit includes first and second sensors respectively sensing positions of the first pressing member and the slidable block and signally connected to the control unit. The control unit determines a braking state of the vehicle according to a difference between a displacement value of the first pressing member and a displacement value of the slidable block.

A computer system has processing circuitry to handle failures associated with a braking arrangement of a vehicle. The processing circuitry determines failures of the braking arrangement. When the failures are associated with a brake ECU, the processing circuitry sends a message to an assisting ECU. The message is indicative of a transfer of control of at least part of the braking arrangement. When the failures are associated with brake actuators, the processing circuitry is configured to trigger an increase in brake pressure to be provided by operational brake actuators. When the failures are associated with a brake pedal or a brake pedal sensor, the processing circuitry is configured to obtain motion information of a neighboring vehicle and control the braking arrangement based on said motion information.