An electric braking device includes: a first valve unit for adjusting a first differential pressure between a master cylinder side liquid pressure and a wheel cylinder side liquid pressure; a storage unit forming a fluid storage chamber; second valve units for adjusting a second differential pressure between the master cylinder side liquid pressure and a storage chamber side liquid pressure; an electric pump for discharging the fluid in the storage chamber; and a control unit which, while operating the electric pump during a time from initiation of braking force application until a request value acquired by a request braking force acquiring unit reaches a maximum value, controls the first valve unit such that the first differential pressure becomes zero, and controls the second valve units such that the second differential pressure becomes zero.

The present disclosure is directed to a braking system for a work vehicle having hydraulically-actuated brakes. The braking system includes a primary release valve, a secondary release valve, and at least one braking mechanism having one or more brake springs. The braking mechanism(s) is hydraulically coupled to the primary release valve and the secondary release valve via one or more hydraulic lines. As such, during full-power operation of the work vehicle, when the brakes are to be released, the primary release valve is energized so as to overcome a valve biasing spring, thereby shifting the primary release valve so as to direct pressurized hydraulic fluid to the braking mechanism(s). Further, when the brakes are to be applied, the primary release valve is inactive so as to allow the hydraulic fluid to flow away from the braking mechanism(s) to a primary reservoir such that the one or more brake springs compress the braking mechanism(s). Alternatively, when power is lost to the work vehicle, the secondary release valve bypasses the primary release valve and directs pressurized hydraulic fluid to the braking mechanism(s) to release the brakes.

A hydraulic pressure braking force generation device is provided with a first control unit for performing control for inhibiting excessive responses in which the input pressure is controlled such that the output pressure is within a first region set using a braking target oil pressure as a reference, a second control unit for performing control for responsiveness in which the increase speed or decrease speed of the input pressure is increased so as to be larger than that in the control for inhibiting excessive responses, to cancel response delay and a switching unit which, on the basis of the state of the braking target oil pressure, switches between the control for inhibiting excessive responses performed by the first control unit and the control for responsiveness performed by the second control unit.

An electronic booster includes an electric motor configured to thrust a piston in a master cylinder, a stroke detection device configured to detect a movement amount of an input member connected to a brake pedal, a rotational angle detection portion configured to detect a rotational angle of a rotational shaft of the electric motor, a control device configured to control driving of the electric motor, and a casing containing a wiring electrically connecting the electric motor and the control device to each other. The stroke detection device includes a first magnet configured to move together with the input member and a first magnetism detection element configured to detect magnetism from the first magnet. The rotational angle detection portion includes a second magnet configured to move together with the rotational shaft of the electric motor and a second magnetism detection element configured to detect magnetism from the second magnet.

Braking control systems, such as for an aircraft, use a hydraulic failure isolation valve intermediate an accumulator power source and a dual valve assembly for mechanical operation when a hydraulic power source experiences a disruption.

A braking system includes a hydraulic brake including a first hydraulic brake provided on one of a front wheel and a rear wheel of a vehicle and a second hydraulic brake provided on the other of the front wheel and the rear wheel of the vehicle, a main braking force adjusting device configured to control braking hydraulic pressure supplied to the first hydraulic brake and the second hydraulic brake, and an auxiliary braking force adjusting device configured to directly control braking hydraulic pressure of the first hydraulic brake when a failure occurs in the main braking force adjusting device, wherein the first hydraulic brake is connected to the main braking force adjusting device via the auxiliary braking force adjusting device.

One or more techniques and/or systems are disclosed for providing autonomous or semi-autonomous braking with a brake system. The brake system includes at least one brake, a main pump, a backup energy source, a primary valve set having a primary control valve and enable valve, and a secondary valve set having a secondary control valve and an enable valve, wherein the at least one brake, the main pump, the backup energy source, the primary valve set, and the secondary valve set are in fluid communication. The brake system further includes a control unit configured to control operation of the main pump, the backup energy source, the primary valve set, and the secondary valve set in response to one of a normal braking condition and a failure braking condition.

A method for operating a braking system for a vehicle. A braking request signal characterizing a braking request is generated by actuation of a positioning assemblage of an actuation circuit, and a target brake pressure required in an active circuit is ascertained based on the braking request signal. An actual brake pressure in the active circuit is established in accordance with the target brake pressure, using a pressure generation device, by moving a displacer piston of the pressure generation device using an electric motor of the pressure generation device. If the braking request signal is constant over a predetermined time period, a wheel brake actuated by the active circuit is hydraulically decoupled from the pressure generation device by closing an isolation valve that is disposed in a hydraulic path between the pressure generation device and the wheel brake, and the electric motor is shut off.

An electronic brake system is disclosed. An electronic brake system according to the present embodiment comprises: a first block in which a device part linked with a brake pedal and mechanically operated is disposed; a second block in which an electronic part electronically operated and controlled by means of an electronic control unit is disposed; an emergency module operated, if the electronic part is disabled, to supportively provide hydraulic pressure; and a connecting line for hydraulically connecting the first block, the second block and the emergency module, wherein the first block, the second block and the emergency module can be provided at positions spaced from each other in a vehicle, and thus the mountability of the brake system and the freedom of design of the vehicle can be improved.

A brake system for selectively actuating at least one of a pair of front wheel brakes and a pair of rear wheel brakes of a vehicle, one of which is hydraulically actuated and the other of which is electrically actuated, includes a reservoir. First and second integrated control units are in fluid communication with the reservoir and respective ones of the hydraulically actuated wheel brakes. The first and second integrated control units have first and second power transmission units connected to first and second electronic control unit, respectively. Each electronic control unit is configured to control a corresponding power transmission unit and a selected one of the electrically actuated wheel brakes on a contralateral side of the vehicle from the selected one of the hydraulically actuated wheel brakes which is actuated by the power transmission unit.