Provided is an electronic parking brake system including: an electronic parking brake provided in at least one of a front wheel and a rear wheel of a vehicle and driven by a motor; and a controller electrically connected to the motor, wherein the controller is configured to determine whether a gear stage of an electronic transmission system (a shift by wire: SBW) is shifted to a neutral position during ignition-off of the vehicle, and upon determining that the gear stage is shifted to the neutral position, release engagement of the electronic parking brake.

A method for operating an electromechanical braking system for a transportation vehicle having a brake pedal, a brake master cylinder, and an electromechanical brake booster. The electromechanical brake booster includes an actuator motor for increasing or decreasing the pedal force on the brake master cylinder to boost or reduce the braking power accordingly. A change in the boosting force of the electromechanical brake booster is limited to avoid uncontrolled changes of the brake boosting.

According to at least one embodiment, the present disclosure provides an electro-hydraulic brake comprising: a main brake unit configured to provide braking hydraulic pressure to a plurality of wheel cylinders by driving a motor; an auxiliary brake unit connected to the main brake unit to be filled with high-pressure braking hydraulic pressure, and configured to provide braking hydraulic pressure to the plurality of wheel cylinders when an operation error of the main brake unit occurs; a main battery configured to supply power to the main brake unit and the auxiliary brake unit; and an auxiliary battery configured to supply power to the auxiliary brake unit when the main battery fails, wherein the auxiliary brake unit comprises an auxiliary brake control unit that controls charging and discharging of the auxiliary battery, and a power module that monitors a state of the main battery and transmits the state to the auxiliary brake control unit, and a battery management module that monitors a state of charge (SOC) of the auxiliary battery and transmits the state of charge to the auxiliary brake control unit.

A system and a method of improving a braking performance during a failure of a brake-by-wire (BBW) device, includes BBW devices including electro-mechanical brakes provided for respective wheels of a vehicle and independently performing braking, and the BBW devices including controllers electrically connected to the electro-mechanical brakes, and the system includes a steer-by-wire controller configured for controlling front wheels through an electronic signal and a rear wheel steering (RWS) controller configured for controlling steering of rear wheels such that a rear wheel steering angle is to be controlled in the same or an antiphase of a front wheel steering angle, wherein when one of the controllers fails, at least one of the steer-by-wire controller and the RWS controller is configured to control steering based on whether a driver's required braking force exceeds a maximum braking force which may be generated by any one of the front and rear wheels.

An electric brake device includes: a brake rotor; a friction member; friction member contactor; an electric motor; braking force estimation unit; and a control device. The control device has a control system in which a motor rotation angle of the electric motor is included in a state quantity in a control computing of a follow-up control. The control device includes a state quantity reset function unit that resets at least the motor rotation angle to a predetermined value, on the basis of a predetermined condition using at least one of a target braking force, an estimated value of a braking force, an amount of change of a target braking force, an amount of change of an estimated value of a braking force, and a deviation between a target braking force and an estimated value of the braking force.

A Vehicle Corner Module (VCM) based brake system, which includes a brake actuator, adapted to regulate the rotation rate of the wheel assembled to the VCM, a fluid-based brake power source, fluidly connected to the brake actuator and adapted to provide pressurized brake fluid for operating the brake actuator, and a brake-control-circuit, functionally associated with the brake actuator and with the brake power source, and adapted to provide functional inputs to the brake actuator based on a target rotation rate profile desired for a wheel mounted on the VCM. All mechanical components of the VCM-based brake system are disposed within the VCM. The VCM-based brake system and the vehicle platform are not in fluid communication with each other.

An electrically controllable drive assembly including an electric motor having a rotor capable of being driven to execute a rotational movement, a motor shaft connected in rotationally fixed fashion to the rotor, and a signal transmitter of a sensor device for the electronic acquisition and evaluation of the angle of rotation of the motor shaft. The signal transmitter is indirectly anchored on the motor shaft via a holding element. The holding element is a hollow cylinder that has an open first end with which the holding element is fastened on the motor shaft and a second end, situated facing away from the motor shaft, and at least one holding element region that extends into the open cross-section of the holding element.

A parking brake apparatus for a vehicle includes a parking brake controller controlling a parking brake system and arranged to obtain one or more input signals indicative of one or more actions from one or more vehicle systems other than the parking braking system. The parking brake controller is also arranged to provide one or more control signals to be applied to components of the parking brake system to apply parking brakes based upon an adaptive time delay to prevent a vehicle rollaway when the one or more input signals are indicative of the one or more actions meeting respective one or more predetermined conditions.

A braking system includes a pedal assembly, a hydraulic assembly, a reversing assembly, a driving wheel assembly, a pedal feel simulator, and a first electronic control unit. The first electronic control unit is electrically connected to the reversing assembly, and controls the reversing assembly to switch a working location. The reversing assembly includes at least two working locations. When the reversing assembly is at a first working location, a brake fluid output port of the hydraulic assembly is connected to the driving wheel assembly through the reversing assembly. When the reversing assembly is at a second working location, the first electronic control unit is electrically connected to the driving wheel assembly, and controls the driving wheel assembly to provide brake force.

A hydraulic brake system for a vehicle includes a master brake cylinder, a hydraulic unit, and multiple wheel brakes. The hydraulic unit Ha at least one brake circuit for modulating the braking pressure in the wheel brakes. At least one wheel brake is paired with a bistable solenoid valve, which is looped into the corresponding fluid channel directly upstream of the paired wheel brake and which enables the braking pressure in the paired wheel brake to be modulated in a de-energized open position and locks the current braking pressure in the paired wheel brake in a de-energized closed position, wherein a volume equalization device which comprises a connectable accumulator opens into the corresponding fluid channel between the bistable solenoid valve and the paired wheel brake.