A system and method for preventing instability of a vehicle due to regenerative braking of a rear wheel are provided, which previously reduce a regenerative braking amount, thus securing vehicle stability and updating a regenerative brake map according to a braking situation, may include a first controller configured of distributing braking torque of front and rear wheels for a deceleration level according to a basic regenerative braking distribution ratio on a regenerative brake map on the basis of a driver demand braking amount, and configured of previously reducing a rear-wheel regenerative braking torque of the rear wheel to a first reference value or less than the first reference value in an adjustment section between first and second deceleration; and a second controller connected to the first controller and configured of further reducing the rear-wheel regenerative braking torque to transmit it to the first controller, if a wheel slip value is greater than a reference slip value according to vehicle driving information during braking of the vehicle.

A system and a method for preventing instability of a vehicle due to regenerative braking of a rear, may include a first controller configured of distributing braking torque of front and rear wheels for a deceleration level according to a basic regenerative braking distribution ratio on a regenerative brake map on the basis of a driver demand braking amount, and configured of previously reducing a rear-wheel regenerative braking torque of the rear wheel to a first reference value or less than the first reference value in an adjustment section between first and second deceleration; and a second controller connected to the first controller and configured of further reducing the rear-wheel regenerative braking torque to transmit it to the first controller, if a wheel slip value is greater than a reference slip value according to vehicle driving information during braking of the vehicle.

This braking control device comprises a differential mechanism, a first electric motor that generates assisting force in a braking operation member, a second electric motor that adjusts output rod shift of the differential mechanism, and a controller that controls the first and second electric motors. In the controller, the first electric motor is controlled on the basis of an assistance map in which the assisting force is calculated, and the second electric motor is controlled on the basis of a displacement map in which the output rod shift is calculated. When the displacement map is changed, the assistance map is corrected as well.

A method and a system are disclosed for validating operation of a secondary braking system (SBS) of a vehicle having a plurality of brakes. The method may involve generating a predetermined braking pressure for at least one brake of the plurality of brakes and calculating, via an electronic control unit (ECU), an estimate of a pump output pressure based upon a counter electromagnetic force generated by a motor within the SBS. The method may further involve comparing an expected pump output pressure to the estimate, wherein the expected pump output pressure corresponds to the predetermined braking pressure and determining whether the SBS is operating properly based upon the comparison.

This braking control device comprises a differential mechanism, a first electric motor that generates assisting force in a braking operation member, a second electric motor that adjusts output rod shift of the differential mechanism, and a controller that controls the first and second electric motors. In the controller, the first electric motor is controlled on the basis of an assistance map in which the assisting force is calculated, and the second electric motor is controlled on the basis of a displacement map in which the output rod shift is calculated. When the displacement map is changed, the assistance map is corrected as well.

A method and a system are disclosed for validating operation of a secondary braking system (SBS) of a vehicle having a plurality of brakes. The method may involve generating a predetermined braking pressure for at least one brake of the plurality of brakes and calculating, via an electronic control unit (ECU), an estimate of a pump output pressure based upon a counter electromagnetic force generated by a motor within the SBS. The method may further involve comparing an expected pump output pressure to the estimate, wherein the expected pump output pressure corresponds to the predetermined braking pressure and determining whether the SBS is operating properly based upon the comparison.

A brake assist system is disclosed for assisting the steering operations of a mobile vehicle. The brake assist system comprises a service brake assembly having a first brake device and a second brake device and an auxiliary control assembly coupled to the service brake assembly. An electronic control unit is communicatively coupled to the auxiliary control assembly and configured to receive an input signal indicative of a vehicle operating parameter comprising at least one of a steering angle generated by a vehicle guidance system or a vehicle speed error and generates a control signal to activate the main and secondary valve circuits by proportionally controlling an output of at least two control valves arranged in the main and secondary valve circuits to supply a pressurized flow of fluid is applied to at least one of the first or second brake devices to assist steering operations of the vehicle.