A brake system for a motor vehicle. The brake system includes an actuating apparatus including a brake pedal for detecting an actuation value specified by a driver of the motor vehicle, at least one wheel brake assigned to a wheel of the motor vehicle, and at least one controllable actuator apparatus using which a braking force of the wheel brake can be adjusted. The actuator apparatus is coupled to the actuating apparatus via at least one signal connection in order to adjust the braking force in accordance with an actuation value of the actuating apparatus. It is provided that the signal connection is designed to transmit the actuation value from the actuating apparatus to the actuator apparatus in encrypted form. A method for operating a brake system is also described.

Disclosed is a control method for a motor of an electronic brake. The control method for a motor of an electronic brake includes: a stop mode-starting step of starting a stop mode when a vehicle is stopped by a brake; an electrical angle-measuring step of measuring an electrical angle of a motor providing pressure to the brake in the stop mode; an electrical angle-calculating step of calculating a changed electrical angle using a predetermined electrical angle change and the electrical angle of the motor measured in the electrical angle-measuring step; and a motor-controlling step of controlling a current flowing to the motor in accordance with the changed electrical angle. Therefore, it is possible to keep a vehicle stopped, prevent a high current from flowing at any one phase of the motor, and prevent the motor from burning.

A method for controlling a deceleration system of a vehicle is disclosed, wherein the deceleration system includes a pressure operated brake system that is a first deceleration subsystem of the deceleration system. The method activates a second deceleration subsystem of the deceleration system for applying a current deceleration effect to the vehicle; generates an activation pressure for activating the brake system, and blocks the generated activation pressure to keep the brake system deactivated. The activation pressure is released and supplied to the pressure operated brake system for activation if the current deceleration effect applied to the vehicle by the second deceleration subsystem is lower than a predetermined deceleration threshold.

A vehicle includes a brake-by-wire system that delivers a certain amount of brake fluid pressure to wheel brakes depending upon the position of a brake pedal. A brake-by-wire fallback or backup mode of operation is also provided. When activated, this by-wire fallback mode commands a certain, known magnitude of brake pressure. The commanded amount of brake pressure can vary based on the state of a brake pedal on/off switch, and can be set regardless of brake pedal position. This provides a backup to the brake-by-wire system without necessarily requiring a mechanical push-through backup system to brake the vehicle in the event a backup mode is required.

A speed control system for a vehicle, comprising an electronic controller configured to automatically cause a vehicle to operate in accordance with a target speed value. The electronic controller is further configured to receive information relating to movement of at least a portion of a vehicle body or at least a portion of a body of an occupant relative to a vehicle, and to automatically adjust the value of the target speed value in dependence on the received information.

A vehicle braking device with electric brakes includes a braking force controller. This controller adjusts braking forces based on an external command. The electric brakes show hysteresis characteristics: braking force rises with increasing current along a positive efficiency line and holds steady when current drops from a turning value to a holding threshold. Further current decrease leads to a reduction in braking force along an inverse efficiency line. The actual braking force has an increasing period when it follows the positive efficiency line and a holding period when it stays constant as current decreases to the holding threshold. If the vehicle does not meet an exclusion requirement and the required braking force is rising, the controller switches from the increasing period to the holding period when the actual braking force matches the target braking force. It switches back to the increasing period when the difference between the actual and target braking forces reaches a predetermined threshold.

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

An apparatus for changing a brake mode using a brake pedal, includes a processor; and a storage medium recording at least one program configured to be executable by the processor, the at least one program including instructions; a first determination unit configured for determining whether a first condition for changing the brake mode is satisfied, wherein the brake mode refers to driver's required deceleration including a different inclination according to a pedal stroke or a pedal effort of the brake pedal, is satisfied; a second determination unit configured for determining whether the pedal stroke of the brake pedal and a pressing time of the brake pedal satisfy a second condition, in response that the first condition is satisfied; and a control unit of changing a current brake mode for a brake system including the brake pedal, in response that the second condition is satisfied.

In exemplary embodiments, methods and systems are provided for controlling braking of a trailer that is coupled to a vehicle. In an exemplary embodiment, a system is provided that includes: one or more sensors configured to obtain sensor data for a vehicle coupled to a trailer, the sensor data including: a measure of engagement of a brake pedal of the vehicle; and a deceleration of the vehicle; and a processor that is coupled to the one or more sensors and that is configured to at least facilitate dynamically controlling braking of the trailer, via instructions provided by the processor to a braking system of the trailer, based on both the measure of engagement of the brake pedal and the deceleration of the vehicle.

System, methods, and other embodiments described herein relate to communicating a recommended speed through feedback on a combined pedal for acceleration or braking. In one embodiment, a control system includes a pedal coupled to a first device having a throttle sensor for a vehicle and a first actuator that generates throttle feedback by applying force to the pedal. The control system also includes the pedal being coupled to a second device having a brake activation sensor for the vehicle and a second actuator that generates braking feedback, the first actuator triggers a rotation of the pedal that initiates a braking command through the brake activation sensor according to a recommended speed computed using vehicle data.